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Magnetic field induced quantum criticality at a Lifshitz transition with interactions
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/content/aip/journal/jap/111/7/10.1063/1.3669912
2012-02-03
2014-09-01

Abstract

Motivated by a discontinuous transition observed in in high magnetic fields, the effects of the Landau quantization and interactions on a Lifshitz transition are studied. The Landau quantization leads to a quasi-one-dimensional behavior for the direction parallel to the field. The repulsive Coulomb interactions give rise to a gas of strongly coupled particles. The density correlation function is calculated for a special long-ranged interaction potential. It is concluded that, in the ground state, an electron (or hole) pocket is emptied in a discontinuous fashion as a function of the chemical potential (or magnetic field). This discontinuity is gradually smeared by the temperature, in agreement with experiments for .

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Scitation: Magnetic field induced quantum criticality at a Lifshitz transition with interactions
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/7/10.1063/1.3669912
10.1063/1.3669912
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