
VOLUME 106  ISSUE 8 
PAGE 491

Quantum limit in a quasionedimensional conductor in a high tilted magnetic field
A. G. Lebed
Department of Physics, University of Arizona, AZ 85721, Tucson, USA L.D. Landau Institute for Theoretical Physics RAS, 117334 Moscow, Russia
Abstract
Recently, we have suggested Fermiliquid  nonFermiliquid
angular crossovers which may exist in quasionedimensional (Q1D)
conductors in high tilted magnetic fields [see A.G. Lebed, Phys.
Rev. Lett. 115, 157001 (2015).] All calculations in the
Letter were done by using the quasiclassical Peierls substitution
method, whose applicability in high magnetic fields was
questionable. Here, we solve a fully quantum mechanical problem
and show that the main qualitative conclusions of the above
mentioned Letter are correct. In particular, we show that in high
magnetic fields, applied along one of the two main crystallographic axis, we
have 2D electron spectrum, whereas, for directions of high magnetic
fields far from the axes, we have 1D electron spectrum. The later
is known to promote nonFermiliquid properties. As a result, we
expect the existence of Fermiliquid  nonFermiliquid angular
crossovers or phase transitions. Electronic parameters of Q1D
conductor (Per)_{2}Pt(mnt)_{2} show that such transitions can
appear in feasible high magnetic fields of the order of
T.

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