Patrick A. Lee

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Patrick A. Lee (born September 8, 1946 in Hong Kong ) is an American theoretical solid-state physicist.

Lee studied at the Massachusetts Institute of Technology (MIT), where he received his bachelor's degree in 1966 and his PhD under Marlan Scully in 1970 (Theory of Josephson Radiation). From 1970 to 1972 he was Gibbs Instructor at Yale University , then from 1974 to 1982 in the theory department of Bell Labs (most recently as head of the theory department) before returning to MIT as a professor in 1982, where he is currently “William and Emma Rogers Professor of Physics “is and head of the areas of biophysics, solid state physics, plasma physics, atomic physics. From 1981 to 1987 he was a trustee of the Aspen Center for Physics . He was u. a. Visiting scholar at the Institute for Advanced Study in Hong Kong .

Lee mainly dealt with strongly correlated electron systems, such as the quantum Hall effect (prediction of a metallic state in half-filled Landau levels), mesoscopic systems, metal-insulator transitions (Mott transitions) and disordered systems. In the 1980s he developed a theory for the phenomenon of universal conductivity fluctuations in mesoscopic systems (Universal Conductance Fluctuations), which was discovered in 1984. These are specific to a certain sample, but in contrast to random fluctuations, they can be reproduced and the amount of the mean amplitude of the fluctuations is given by a universal constant ( ). From the 1990s on, he also worked on the theory of high-temperature copper oxide superconductors (HTSC), the properties of which he wanted to explain from the fact that these materials were doped Mott insulators . Mott insulators are insulators which, according to the usual ribbon model of the electronic states, should actually be conductive. The Coulomb interaction between the electrons, which is neglected in the ribbon model, means that they are insulators. This also includes the copper oxide HTSL. According to these theories, removal of a few electrons ( doping ) should lead to the formation of a superconducting state.

In 1995 he was a Guggenheim Fellow . Lee received the American Physical Society's (APS) Oliver E. Buckley Condensed Matter Prize in 1991 for achievements in solid state physics, and the Dirac Medal (ICTP) in 2005 for "fundamental contributions to the understanding of disordered and strongly interacting many-body systems". In 2013 he was awarded the Feenberg Medal . Lee is a Fellow of the APS, a member of the National Academy of Sciences and the American Academy of Arts and Sciences since 1991, and a member of the Academia Sinica since 1994 .

Fonts

  • with TV Ramakrishnan : Disordered Electronic Systems. In: Reviews of Modern Physics. Volume 57, 1985, p. 287
  • with Naota Nagaosa, Xiao-Gang Wen: Doping a Mott-Insulator. Physics of High Temperature Superconductivity. In: Reviews of Modern Physics. Volume 78, 2006, pp. 17-86
  • with Boris Altshuler : Disordered electronic systems. In: Physics Today. December 1988 (special issue "Physics of Disorder")

Web links

Remarks

  1. ↑ Lee, Scully, Physical Review B. Volume 3, 1971, p. 769, on the interaction of a Josephson element with electromagnetic cavity fields
  2. ^ BI Halperin , PA Lee, N. Read: Theory of the Half-filled Landau Level. In: Physical Review B. Volume 47, 1993, p. 7312
  3. ↑ That means solid-state systems with such small dimensions (about in the micrometer range) and at such a low temperature that the electrons show coherence effects, which is the case if there is no or only elastic scattering at the imperfections.
  4. ^ PA Lee, AD Stone: Universal Conductance Fluctuations in Metals. In: Physical Review Letters. Vol. 55, 1985, p. 1622; Lee, Stone, Fukuyama, Physical Review B. Vol. 35, 1987, p. 1039; Lee, Physica A. Vol. 140, 1986, p. 169
  5. ↑ PA Lee, N. Nagaosa: Gauge Theory of the Normal State of High Tc Superconductors. In: Physical Review B. Volume 46, 1992, p. 5621; PA Lee: Localized States in a d-Wave Superconductor. In: Physical Review Letters. Volume 71, 1993, p. 1887; XG Wen , PA Lee: Theory of Underdoped Cuprates. In: Physical Review Letters. Volume 76, 1996, p. 503; PA Lee, N. Nagaosa, TK Ng, XG Wen: An SU (2) Formulation of the tJ Model: Application to Underdoped Cuprates. In: Physical Review B. Volume 57, 1998, p. 6003; Don H. Kim, PA Lee: Theory of Spin Excitations in Undoped and Underdoped Cuprates. In: Annals of Physics. Volume 272, 1999, p. 130
personal data
SURNAME Lee, Patrick A.
BRIEF DESCRIPTION American theoretical solid-state physicist
DATE OF BIRTH September 8, 1946
PLACE OF BIRTH Hong Kong