John Bardeen

John Bardeen (/bɑːrˈdiːn/; May 23, 1908 – January 30, 1991)[3] was an American physicist. He is the only person to be awarded the Nobel Prize in Physics twice: first in 1956 with William Shockley and Walter Brattain for the invention of the transistor; and again in 1972 with Leon N Cooper and John Robert Schrieffer for a fundamental theory of conventional superconductivity known as the BCS theory.[2][6]

John Bardeen
Born(1908-05-23)May 23, 1908
Madison, Wisconsin, U.S.
DiedJanuary 30, 1991(1991-01-30) (aged 82)
Boston, Massachusetts, U.S.
EducationUniversity of Wisconsin (BS, MS)
Princeton University (PhD)
Known for
Spouse(s)
Jane Maxwell
(
m. 1938)
Children
Awards
Scientific career
FieldsPhysics
InstitutionsBell Telephone Laboratories
University of Illinois at Urbana–Champaign
ThesisQuantum Theory of the Work Function (1936)
Doctoral advisorEugene Wigner[4]
Doctoral students

The transistor revolutionized the electronics industry, making possible the development of almost every modern electronic device, from telephones to computers, and ushering in the Information Age. Bardeen's developments in superconductivity—for which he was awarded his second Nobel Prize—are used in nuclear magnetic resonance spectroscopy (NMR) and medical magnetic resonance imaging (MRI).

In 1990, Bardeen appeared on LIFE Magazine's list of "100 Most Influential Americans of the Century."[7]

Education and early life

Bardeen was born in Madison, Wisconsin, on May 23, 1908.[8] He was the son of Charles Bardeen, the first dean of the University of Wisconsin Medical School.

Bardeen attended the University High School at Madison. He graduated from the school in 1923 at age 15.[8] He could have graduated several years earlier, but this was postponed because he took courses at another high school and because of his mother's death. He entered the University of Wisconsin in 1923. While in college, he joined the Zeta Psi fraternity. He raised the needed membership fees partly by playing billiards. He was initiated as a member of Tau Beta Pi engineering honor society. He chose engineering because he did not want to be an academic like his father. He also felt that engineering had good job prospects.[9]

Bardeen received his Bachelor of Science degree in electrical engineering in 1928 from the University of Wisconsin–Madison.[10] He graduated in 1928 despite taking a year off to work in Chicago.[11] He took all the graduate courses in physics and mathematics that had interested him, and he graduated in five years instead of the usual four. This allowed him time to complete his Master's thesis, which was supervised by Leo J. Peters. He received his Master of Science degree in electrical engineering in 1929 from Wisconsin.[4][10]

Bardeen furthered his studies by staying on at Wisconsin, but he eventually went to work for Gulf Research Laboratories, the research arm of the Gulf Oil Corporation that was based in Pittsburgh.[7] From 1930 to 1933, Bardeen worked there on the development of methods for the interpretation of magnetic and gravitational surveys.[8] He worked as a geophysicist. After the work failed to keep his interest, he applied and was accepted to the graduate program in mathematics at Princeton University.[9]

As a graduate student, Bardeen studied mathematics and physics. Under physicist Eugene Wigner, he ended up writing his thesis on a problem in solid-state physics. Before completing his thesis, he was offered a position as Junior Fellow of the Society of Fellows at Harvard University in 1935. He spent the next three years there, from 1935 to 1938, working with to-be Nobel laureates in physics John Hasbrouck van Vleck and Percy Williams Bridgman on problems in cohesion and electrical conduction in metals, and also did some work on level density of nuclei. He received his Ph.D. in mathematical physics from Princeton in 1936.[8]

Career and research

World War II Service

From 1941 to 1944, Bardeen headed the group working on magnetic mines and torpedoes and mine and torpedo countermeasures at the Naval Ordnance Laboratory. During this period his wife Jane gave birth to a son (Bill, born in 1941) and a daughter (Betsy, born in 1944).[12]

Bell Labs
John Bardeen, William Shockley and Walter Brattain at Bell Labs, 1948

In October 1945, Bardeen began work at Bell Labs. He was a member of a solid-state physics group, led by William Shockley and chemist Stanley Morgan. Other personnel working in the group were Walter Brattain, physicist Gerald Pearson, chemist Robert Gibney, electronics expert Hilbert Moore and several technicians. He moved his family to Summit, New Jersey.[13]

The assignment of the group was to seek a solid-state alternative to fragile glass vacuum tube amplifiers. Their first attempts were based on Shockley's ideas about using an external electrical field on a semiconductor to affect its conductivity. These experiments mysteriously failed every time in all sorts of configurations and materials. The group was at a standstill until Bardeen suggested a theory that invoked surface states that prevented the field from penetrating the semiconductor. The group changed its focus to study these surface states, and they met almost daily to discuss the work. The rapport of the group was excellent, and ideas were freely exchanged.[14] By the winter of 1946 they had enough results that Bardeen submitted a paper on the surface states to Physical Review. Brattain started experiments to study the surface states through observations made while shining a bright light on the semiconductor's surface. This led to several more papers (one of them co-authored with Shockley), which estimated the density of the surface states to be more than enough to account for their failed experiments. The pace of the work picked up significantly when they started to surround point contacts between the semiconductor and the conducting wires with electrolytes. Moore built a circuit that allowed them to vary the frequency of the input signal easily and suggested that they use glycol borate (gu), a viscous chemical that didn't evaporate. Finally they began to get some evidence of power amplification when Pearson, acting on a suggestion by Shockley,[15] put a voltage on a droplet of gu placed across a p–n junction.

The invention of the transistor
Main articles: Transistor and History of the transistor
A stylized replica of the first transistor invented at Bell Labs on December 23, 1947

On December 23, 1947, Bardeen and Brattain were working without Shockley when they succeeded in creating a point-contact transistor that achieved amplification. By the next month, Bell Labs' patent attorneys started to work on the patent applications.[16]

Bell Labs' attorneys soon discovered that Shockley's field effect principle had been anticipated and patented in 1930 by Julius Lilienfeld, who filed his MESFET-like patent in Canada on October 22, 1925.[17]

Shockley publicly took the lion's share of the credit for the invention of transistor; this led to a deterioration of Bardeen's relationship with Shockley.[18] Bell Labs management, however, consistently presented all three inventors as a team. Shockley eventually infuriated and alienated Bardeen and Brattain, and he essentially blocked the two from working on the junction transistor. Bardeen began pursuing a theory for superconductivity and left Bell Labs in 1951. Brattain refused to work with Shockley further and was assigned to another group. Neither Bardeen nor Brattain had much to do with the development of the transistor beyond the first year after its invention.[19][20]

The "transistor" (a portmanteau of "transconductance" and "resistor") was 1/50 the size of the vacuum tubes it replaced in televisions and radios, used far less power, was far more reliable, and it allowed electrical devices to become more compact.[7]

University of Illinois at Urbana–Champaign
A commemorative plaque remembering John Bardeen and the theory of superconductivity, at the University of Illinois at Urbana–Champaign

By 1951, Bardeen was looking for a new job. Fred Seitz, a friend of Bardeen, convinced the University of Illinois at Urbana–Champaign to make Bardeen an offer of $10,000 a year. Bardeen accepted the offer and left Bell Labs.[16] He joined the engineering and physics faculties at the University of Illinois at Urbana–Champaign in 1951. He was Professor of Electrical Engineering and of Physics at Illinois. His Ph.D. student Nick Holonyak (1954), invented the LED in 1962.[5]

At Illinois, he established two major research programs, one in the Electrical Engineering Department and one in the Physics Department. The research program in the Electrical Engineering Department dealt with both experimental and theoretical aspects of semiconductors, and the research program in the Physics Department dealt with theoretical aspects of macroscopic quantum systems, particularly superconductivity and quantum liquids.[21]

He was an active professor at Illinois from 1951 to 1975 and then became Professor Emeritus.[7] In his later life, Bardeen remained active in academic research, during which time he focused on understanding the flow of electrons in charge density waves (CDWs) through metallic linear chain compounds. His proposals[22][23][24] that CDW electron transport is a collective quantum phenomenon (see Macroscopic quantum phenomena) were initially greeted with skepticism.[25] However, experiments reported in 2012[26] show oscillations in CDW current versus magnetic flux through tantalum trisulfide rings, similar to the behavior of superconducting quantum interference devices (see SQUID and Aharonov–Bohm effect), lending credence to the idea that collective CDW electron transport is fundamentally quantum in nature.[27][28] (See quantum mechanics.) Bardeen continued his research throughout the 1980s, and published articles in Physical Review Letters[29] and Physics Today[30] less than a year before he died.

The Nobel Prize in Physics in 1956

In 1956, John Bardeen shared the Nobel Prize in Physics with William Shockley of Semiconductor Laboratory of Beckman Instruments and Walter Brattain of Bell Telephone Laboratories "for their researches on semiconductors and their discovery of the transistor effect".[31]

At the Nobel Prize ceremony in Stockholm, Brattain and Shockley received their awards that night from King Gustaf VI Adolf. Bardeen brought only one of his three children to the Nobel Prize ceremony. King Gustav chided Bardeen because of this, and Bardeen assured the King that the next time he would bring all his children to the ceremony. He kept his promise.[32]

BCS theory
Main article: BCS theory

In 1957, Bardeen, in collaboration with Leon Cooper and his doctoral student John Robert Schrieffer, proposed the standard theory of superconductivity known as the BCS theory (named for their initials).[7]

The Nobel Prize in Physics in 1972

In 1972, Bardeen shared the Nobel Prize in Physics with Leon N Cooper of Brown University and John Robert Schrieffer of the University of Pennsylvania "for their jointly developed theory of superconductivity, usually called the BCS-theory".[33] This was Bardeen's second Nobel Prize in Physics. He became the first person to win two Nobel Prizes in the same field.[34] Only three others have ever received more than one Nobel Prize.[35]

Bardeen brought his three children to the Nobel Prize ceremony in Stockholm.[32] Bardeen gave much of his Nobel Prize money to fund the Fritz London Memorial Lectures at Duke University.[36]

Other awards

In addition to being awarded the Nobel prize twice, Bardeen has numerous other awards including:

Xerox

Bardeen was also an important adviser to Xerox Corporation. Though quiet by nature, he took the uncharacteristic step of urging Xerox executives to keep their California research center, Xerox PARC, afloat when the parent company was suspicious that its research center would amount to little.

Personal life

Bardeen married Jane Maxwell on July 18, 1938. While at Princeton, he met Jane during a visit to his old friends in Pittsburgh.

Bardeen was a scientist with a very unassuming personality. While he served as a professor for almost 40 years at the University of Illinois, he was best remembered by neighbors for hosting cookouts where he would prepare food for his friends, many of whom were unaware of his accomplishments at the university. He would always ask his guests if they liked the hamburger bun toasted (since he liked his that way). He enjoyed playing golf and going on picnics with his family. Lillian Hoddeson, a University of Illinois historian who wrote a book on Bardeen, said that because he "differed radically from the popular stereotype of 'genius' and was uninterested in appearing other than ordinary, the public and the media often overlooked him."[5]

When Bardeen was asked about his beliefs during a 1988 interview, he responded: "I am not a religious person, and so do not think about it very much". However, he has also said: "I feel that science cannot provide an answer to the ultimate questions about the meaning and purpose of life." Bardeen did believe in a code of moral values and behaviour.[41] John Bardeen's children were taken to church by his wife, who taught Sunday school and was a church elder.[42] Despite this, he and his wife made it clear that they did not have faith in an afterlife and other religious ideas.[43]

Death

Bardeen died of heart disease at age 82 at Brigham and Women's Hospital in Boston, Massachusetts, on January 30, 1991.[44] Although he lived in Champaign-Urbana, he had come to Boston for medical consultation.[7] Bardeen and his wife Jane (1907–1997) are buried in Forest Hill Cemetery, Madison, Wisconsin.[45] They were survived by three children, James, William and Elizabeth Bardeen Greytak, and six grandchildren.[7]

Legacy
Near the end of this decade, when they begin enumerating the names of the people who had the greatest impact on the 20th century, the name of John Bardeen, who died last week, has to be near, or perhaps even arguably at, the top of the list ... Mr. Bardeen shared two Nobel Prizes and has been awarded numerous other honors. But what greater honor can there be when each of us can look all around us and everywhere see the reminders of a man whose genius has made our lives longer, healthier and better.

—Chicago Tribune editorial, February 3, 1991

In honor of Professor Bardeen, the engineering quadrangle at the University of Illinois at Urbana-Champaign is named the Bardeen Quad.

Also in honor of Bardeen, Sony Corporation endowed a $3 million John Bardeen professorial chair at the University of Illinois at Urbana-Champaign, beginning in 1990.[44] SONY Corporation owed much of its success to commercializing Bardeen's transistors in portable TVs and radios, and had worked with Illinois researchers. The current John Bardeen Professor is Nick Holonyak, Bardeen's doctoral student and protege.

At the time of Bardeen's death, then-University of Illinois chancellor Morton Weir said, "It is a rare person whose work changes the life of every American; John's did."[34]

Bardeen was honored on a March 6, 2008, United States postage stamp as part of the "American Scientists" series designed by artist Victor Stabin. The $0.41 stamp was unveiled in a ceremony at the University of Illinois.[46] His citation reads: "Theoretical physicist John Bardeen (1908–1991) shared the Nobel Prize in Physics twice — in 1956, as co-inventor of the transistor and in 1972, for the explanation of superconductivity. The transistor paved the way for all modern electronics, from computers to microchips. Diverse applications of superconductivity include infrared sensors and medical imaging systems." The other scientists on the "American Scientists" sheet include biochemist Gerty Cori, chemist Linus Pauling and astronomer Edwin Hubble.

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References
  1. "Elizabeth Greytak, Systems Analyst". The Boston Globe. Boston. 2000-12-25. Archived from the original on 2016-03-01. Retrieved 2014-12-27.
  2. Bardeen Biography from the Nobel Foundation
  3. Pippard, B. (1994). "John Bardeen. 23 May 1908–30 January 1991". Biographical Memoirs of Fellows of the Royal Society. 39: 20–34. doi:10.1098/rsbm.1994.0002.
  4. John Bardeen at the Mathematics Genealogy Project
  5. "Nice Guys Can Finish As Geniuses at University of Illinois in Urbana-Champaign". Chicago Tribune: Knight Ridder News Service. 2003-01-25. Retrieved 2007-08-03.
  6. Hoddeson, Lillian and Vicki Daitch. True Genius: the Life and Science of John Bardeen. National Academy Press, 2002. ISBN 0-309-08408-3
  7. "John Bardeen, Nobelist, Inventor of Transistor, Dies". Washington Post. 1991-01-31. Archived from the original on 2012-11-02. Retrieved 2007-08-03.
  8. "Biography of John Bardeen". The Nobel Foundation. Retrieved 2007-11-01.
  9. "Biography of John Bardeen 1". PBS. Retrieved 2007-12-24.
  10. "Curriculum Vitae of John Bardeen". The Nobel Foundation. Retrieved 2007-11-01.
  11. David Pines (2003-05-01). "John Bardeen: genius in action". physicsworld.com. Archived from the original on 2007-10-20. Retrieved 2008-01-07.
  12. Pines, David. "John Bardeen." (2013). http://www.nasonline.org/publications/biographical-memoirs/memoir-pdfs/bardeen-john.pdf
  13. Daitch, Vicki; Hoddeson, Lillian (2002-10-28). True Genius: The Life and Science of John Bardeen. Joseph Henry Press. p. 117. ISBN 9780309084086. Soon, however, life in Summit would become easy and rich for the Bardeens.
  14. Riordan, Michael; Hoddeson, Lillian (1997). Crystal Fire. W. W. Norton & Company. p. 127. ISBN 9780393041248.
  15. Riordan, Michael; Hoddeson, Lillian (1997). Crystal Fire: The Birth of the Information Age. W. W. Norton & Company. p. 132. ISBN 9780393041248.
  16. "Biography of John Bardeen 2". PBS. Retrieved 2007-12-24.
  17. US 1745175 "Method and apparatus for controlling electric current" first filing in Canada on 22.10.1925
  18. Diane Kormos Buchwald. American Scientist 91.2 (Mar.-Apr. 2003): 185–86.
  19. Crystal Fire p. 278
  20. R Kessler, 1997, Absent at the Creation, Washington Post Magazine.
  21. "Biography at the University of Illinois at Urbana-Champaign". The University of Illinois at Urbana-Champaign. Archived from the original on 2007-10-11. Retrieved 2007-11-06.
  22. Bardeen, John (1979). "Theory of non-ohmic conduction from charge-density waves in NbSe3". Physical Review Letters. 42 (22): 1498–1500. Bibcode:1979PhRvL..42.1498B. doi:10.1103/PhysRevLett.42.1498.
  23. Bardeen, John (1980). "Tunneling theory of charge-density-wave depinning". Physical Review Letters. 45 (24): 1978–1980. Bibcode:1980PhRvL..45.1978B. doi:10.1103/PhysRevLett.45.1978.
  24. J. H. Miller, Jr.; J. Richard; J. R. Tucker; John Bardeen (1983). "Evidence for tunneling of charge-density waves in TaS3". Physical Review Letters. 51 (17): 1592–1595. Bibcode:1983PhRvL..51.1592M. doi:10.1103/PhysRevLett.51.1592.
  25. Pines, David (2009). "Biographical Memoirs: John Bardeen" (PDF). Proceedings of the American Philosophical Society. 153 (3): 287–321. Archived from the original (PDF) on 24 May 2013.
  26. M. Tsubota; K. Inagaki; T. Matsuura; S. Tanda (2012). "Aharonov-Bohm effect in charge-density wave loops with inherent temporal current switching". EPL. 97 (5): 57011. arXiv:0906.5206. Bibcode:2012EL.....9757011T. doi:10.1209/0295-5075/97/57011.
  27. J. H. Miller, Jr.; A.I. Wijesinghe; Z. Tang; A.M. Guloy (2012). "Correlated quantum transport of density wave electrons". Physical Review Letters. 108 (3): 036404. arXiv:1109.4619. Bibcode:2012PhRvL.108c6404M. doi:10.1103/PhysRevLett.108.036404. PMID 22400766.
  28. J.H. Miller, Jr.; A.I. Wijesinghe; Z. Tang; A.M. Guloy (2013). "Coherent quantum transport of charge density waves". Physical Review B. 87 (11): 115127. arXiv:1212.3020. Bibcode:2013PhRvB..87k5127M. doi:10.1103/PhysRevB.87.115127.
  29. Bardeen, John (1990). "Theory of size effects in depinning of charge-density waves". Physical Review Letters. 64 (19): 2297–2299. Bibcode:1990PhRvL..64.2297B. doi:10.1103/PhysRevLett.64.2297. PMID 10041638.
  30. Bardeen, John (1990). "Superconductivity and other macroscopic quantum phenomena". Physics Today. 43 (12): 25–31. Bibcode:1990PhT....43l..25B. doi:10.1063/1.881218. Archived from the original on 2013-04-15.
  31. "The Nobel Prize in Physics in 1956". The Nobel Foundation. Retrieved 2007-11-06.
  32. "Biography of John Bardeen 3". PBS. Retrieved 2007-12-24.
  33. "The Nobel Prize in Physics in 1972". The Nobel Foundation. Retrieved 2007-12-19.
  34. "Physicist John Bardeen, 82, transistor pioneer, Nobelist". Chicago Sun-Times. 1991-01-31. Archived from the original on 2012-11-02. Retrieved 2007-08-03.
  35. cf. List of Nobel laureates#Laureates
  36. "Fritz London Memorial Prize". Duke University. Retrieved 2007-12-24.
  37. "Book of Members, 1780–2010: Chapter B" (PDF). American Academy of Arts and Sciences. Retrieved 15 April 2011.
  38. "The President's National Medal of Science: Recipient Details – US National Science Foundation (NSF)". nsf.gov. Retrieved 2014-02-25.
  39. "Fellowship of the Royal Society 1660–2015". London: Royal Society. Archived from the original on 2015-10-15.
  40. "Golden Plate Awardees of the American Academy of Achievement". www.achievement.org. American Academy of Achievement.
  41. Hoddeson, Lillian; Daitch, Vicki (2002). True Genius: The Life and Science of John Bardeen. Joseph Henry Press. ISBN 9780309169547. John's mother, Althea, had been reared in the Quaker tradition, and his stepmother, Ruth, was Catholic, but John was resolutely secular throughout his life. He was once "taken by surprise" when an interviewer asked him a question about religion. "I am not a religious person," he said, "and so do not think about it very much." He went on in a rare elaboration of his personal beliefs. "I feel that science cannot provide an answer to the ultimate questions about the meaning and purpose of life. With religion, one can get answers on faith. Most scientists leave them open and perhaps unanswerable, but do abide by a code of moral values. For a civilized society to succeed, there must be a common consensus on moral values and moral behaviour, with due regard to the welfare of our fellow man. There are likely many sets of moral values compatible with successful civilized society. It is when they conflict that difficulties arise."
  42. Daitch & Hoddeson (2002). True Genius:: The Life and Science of John Bardeen. Joseph Henry Press, pp. 168–169.
  43. Vicki Daitch, Lillian Hoddeson (2002). "Last Journey". True Genius:: The Life and Science of John Bardeen. Joseph Henry Press. p. 313. ISBN 9780309169547. Every time we attend a funeral service," Jane had once told her sister Betty, "we decide again that we want no such ceremony when we die." She and John agreed that the family could, if they wanted to, have a memorial service conducted by friends and family, "but not a sermon by a stranger, who, if a minister, is bound to dwell on life after death and other religious ideas in which we have no faith.
  44. John Noble Wilford (January 31, 1991). "Dr. John Bardeen, 82, Winner Of Nobel Prize for Transistor, Dies". The New York Times. Retrieved 2014-02-25. John Bardeen, a co-inventor of the transistor that led to modern electronics and twice a winner of the Nobel Prize in Physics, died yesterday at Brigham and Women's Hospital in Boston. He was 82 years old. ...
  45. https://www.flickr.com/photos/centralhistorian/383446449/, Accessed 9-30-2009.
  46. "Bardeen Stamp Celebrated at Campus Ceremony". University of Illinois. Retrieved 2008-03-04.
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