Open AccessNon-Fermi-liquid magic angle effects in high magnetic fields
Author(s) -
A. G. Lebed
Publication year - 2016
Publication title -
physical review. b./physical review. b
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.78
H-Index - 465
eISSN - 2469-9969
pISSN - 2469-9950
DOI - 10.1103/physrevb.94.035162
Subject(s) - physics , fermi liquid theory , condensed matter physics , magnetic field , fermi gamma ray space telescope , conductor , electron , fermi contact interaction , paramagnetism , quantum mechanics , materials science , superconductivity , composite material
We investigate a theoretical problem of electron-electron interactions in an inclined magnetic field in a quasi-one-dimensional (Q1D) conductor. We show that they result in strong non-Fermi-liquid corrections to a specific heat, provided that the direction of the magnetic field is far from the so-called Lebed's magic angles (LMAs). If magnetic field is directed close to one of the LMAs, the specific heat corrections become small and the Fermi-liquid picture restores. As a result, we predict Fermi-liquid-non-Fermi-liquid angular crossovers in the vicinities of the LMA directions of the field. We suggest to perform the corresponding experiment in the Q1D conductor (Per)(2)Au(mnt)(2) under pressure in magnetic fields of the order of H similar or equal to 25 T