Non-Fermi-Liquid Crossovers in a Quasi-One-Dimensional Conductor in a Tilted Magnetic Field

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Abstract

We consider a theoretical problem of electron-electron scattering time in a quasi-one-dimensional (Q1D) conductor in a magnetic field, perpendicular to its conducting axis. We show that inverse electron-electron scattering time becomes of the order of characteristic electron energy, 1/τ∼ε∼T, in a high magnetic field, directed far from the main crystallographic axes, which indicates breakdown of the Fermi-liquid theory. In a magnetic field, directed close to one of the main crystallographic axis, inverse electron-electron scattering time becomes much smaller than characteristic electron energy and, thus, applicability of Fermi-liquid theory restores. We suggest that there exist crossovers (or phase transitions) between Fermi-liquid and some non-Fermi-liquid states in a strong enough tilted magnetic field. Application of our results to the Q1D conductor (Per)2Au(mnt)2 shows that it has to be possible to observe the above-mentioned phenomenon in feasibly high magnetic fields of the order of H≥H∗≃25T.

Original languageEnglish (US)
Article number157001
JournalPhysical Review Letters
Volume115
Issue number15
DOIs
StatePublished - Oct 8 2015

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crossovers
conductors
Fermi liquids
liquids
electron scattering
magnetic fields
electron energy
electrons
breakdown
conduction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Non-Fermi-Liquid Crossovers in a Quasi-One-Dimensional Conductor in a Tilted Magnetic Field. / Lebed, Andrei G.

In: Physical Review Letters, Vol. 115, No. 15, 157001, 08.10.2015.

Research output: Contribution to journalArticle

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