Doping a semiconductor to create an unconventional metal

Nature
N ManyalaA P Ramirez

Abstract

Landau-Fermi liquid theory, with its pivotal assertion that electrons in metals can be simply understood as independent particles with effective masses replacing the free electron mass, has been astonishingly successful. This is true despite the Coulomb interactions an electron experiences from the host crystal lattice, lattice defects and the other approximately 10(22) cm(-3) electrons. An important extension to the theory accounts for the behaviour of doped semiconductors. Because little in the vast literature on materials contradicts Fermi liquid theory and its extensions, exceptions have attracted great attention, and they include the high-temperature superconductors, silicon-based field-effect transistors that host two-dimensional metals, and certain rare-earth compounds at the threshold of magnetism. The origin of the non-Fermi liquid behaviour in all of these systems remains controversial. Here we report that an entirely different and exceedingly simple class of materials-doped small-bandgap semiconductors near a metal-insulator transition-can also display a non-Fermi liquid state. Remarkably, a modest magnetic field functions as a switch which restores the ordinary disordered Fermi liquid. Our data suggest that we have ...Continue Reading

References

Jul 1, 1986·Physical Review. B, Condensed Matter·M P SarachikR N Bhatt
Dec 15, 1994·Physical Review. B, Condensed Matter·M LaknerP Wölfle
May 15, 1993·Physical Review. B, Condensed Matter·L F Mattheiss, D R Hamann
Apr 20, 1987·Physical Review Letters·R J CavaG P Espinosa
Aug 1, 1988·Physical Review Letters·M A PaalanenS Sachdev
Sep 13, 1993·Physical Review Letters·Z SchlesingerG Aeppli
Dec 9, 1996·Physical Review Letters·S V KravchenkoJ E Furneaux
Oct 3, 2000·Nature·A SchroderP Coleman
Sep 5, 2003·Nature·S GhoshS N Coppersmith
Mar 23, 2004·Nature Materials·Ncholu ManyalaZachary Fisk
Feb 9, 2005·Physical Review Letters·A Posazhennikova, P Coleman

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Citations

Dec 31, 2011·Inorganic Chemistry·W Adam PhelanJulia Y Chan
Sep 22, 2011·Proceedings of the National Academy of Sciences of the United States of America·A W RostA P Mackenzie
Dec 20, 2011·Cellular Physiology and Biochemistry : International Journal of Experimental Cellular Physiology, Biochemistry, and Pharmacology·Ana Carolina Santos de SouzaAlexandre D Martins Cavagis
Apr 11, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jan M Tomczak
Apr 7, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·S Shanmukharao Samatham, K G Suresh
Feb 21, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·S Shanmukharao SamathamV Ganesan
Aug 23, 2008·Nature·Zachary Fisk, Stephan von Molnár
Mar 4, 2021·Physical Chemistry Chemical Physics : PCCP·S Shanmukharao SamathamR Nirmala
Oct 27, 2011·Physical Review Letters·H WilhelmA N Bogdanov
Sep 26, 2012·Physical Review Letters·Dominikus KölblSantos F Alvarado
Apr 15, 2010·Nano Letters·Jeremy M HigginsSong Jin
Apr 30, 2010·ACS Nano·Kwanyong SeoBongsoo Kim

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