Jainendra K. Jain

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Jainendra Kumar Jain (* 1960 in Sambhar, Rajasthan ) is an Indian theoretical solid-state physicist .

Life

Jain grew up in the village of Sambhar on the eastern edge of the Thar Desert in Rajasthan . He studied at Maharaja College in Jaipur (Bachelor degree 1979), at the Indian Institute of Technology Kanpur (Master degree 1981) and received his PhD in 1985 with Philip B. Allen at the State University of New York at Stony Brook (SUNY). From 1986 to 1988 he was a post-doc at the University of Maryland and 1988/89 at Yale University . He then became Assistant Professor and in 1997 Professor at SUNY. Since 1998 he has been "Erwin W. Mueller Professor" at Pennsylvania State University and also an Adjunct Professorat the Tata Institute of Fundamental Research in Mumbai .

Jain developed the concept of composite fermions , quasiparticles made up of an electron and a suitable number of several "flux tubes" of the elementary magnetic flux Φ 0 = h / e, which is decisive in the quantum Hall effect , for the purpose of explaining the fractional quantum Hall- Effect (FQHE). In this way, Jain explained essential phenomena of FQHE as integer QHE of composite fermions and thus created a unified theory of integer and fractional QHE. While integer QHE was fairly well understood, the more complex FQHE, a non-perturbative effect of the interacting electron system, was not previously the case, despite initial breakthroughs by Robert B. Laughlin , F. Duncan M. Haldane, and others. Jain expanded the theory he established in 1989 in many directions (for example with simulations using quantum Monte Carlo calculations), in particular in order to compare the theory with the experiment.

Jain is a Fellow of the American Physical Society and the American Academy of Arts and Sciences . He was a Guggenheim Fellow (1996) and a Sloan Research Fellow (1991). In 2002 he received the Oliver E. Buckley Condensed Matter Prize with Nicholas Read and Robert Willett , who also worked on the composite Fermion model. He received the Distinguished Alumnus Award from both the University of Maryland and the IIT.

Fonts

  • Composite fermion approach to fractional quantum Hall effect, Phys. Rev. Lett., Vol. 63, 1989, pp. 199-202
  • Theory of the fractional quantum Hall effect, Phys. Rev. B, Vol. 41, 1990, pp. 7653-7665
  • Composite Fermions, Cambridge University Press 2007
  • The composite fermion - a quantum particle and its quantum liquid, Physics Today Vol. 53, 2000, Issue 4

Web links

References and footnotes

  1. ↑ This is double the flux quantum of superconductivity, because there e is replaced by 2e, since the charge carriers of superconductivity are Cooper pairs .
personal data
SURNAME Jain, Jainendra K.
ALTERNATIVE NAMES Jain, Jainendra Kumar (full name)
BRIEF DESCRIPTION Indian physicist
DATE OF BIRTH 1960
PLACE OF BIRTH Sambhar, Rajasthan