Magnetoconductivity of a metal with a closed Fermi surface reconstructed by a biaxial density wave

Znanstveni rad - Izvorni znanstveni rad

• Autor: Anatoly Kadigrobov
• Autor: Barbara Keran
• Autor: Danko Radić
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

We investigate quantum dynamics and kinetics of a 2D conductor with a closed Fermi surface reconstructed by a biaxial density wave, in which electrons move along a two-dimensional periodic net of semiclassical trajectories coupled by the magnetic breakdown tunneling under a strong magnetic field. We derive a quasiparticle dispersion law and magnetoconductivity tensor. The quasiparticle spectrum is found to be the alternating series of two-dimensional magnetic energy bands with gaps between them. The longitudinal magnetoconductivity shows giant oscillations with change of magnetic field, while the Hall coefficient changes sign and is absent in a wide range of the magnetic fields in between. Preliminary estimations show that the suggested magnetoconductivity mechanism may be the origin of such behavior of the Hall coefficient versus magnetic field, as observed in experiments in materials with analogous topology of the Fermi surface, such as the high-Tc superconducting cuprates.

• Ključne riječi (engleski): charge density wave; magnetic breakdown; magnetoconductivity
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review B
• Brojčani podaci: vol. 104, br. 15, 155143
• p-ISSN: 2469-9950
• e-ISSN: 2469-9969
• DOI: https://doi.org/10.1103/PhysRevB.104.155143
• URN:NBN: urn:nbn:hr:217:633899
• Datum objave publikacije: 2021-10-25
• Projekt: Šifra: IP-2016-06-2289; Naziv (hrvatski): Kolektivni efekti, tunelirajući i topološki transport u novim nanospojevima; Naziv (engleski): Collective effects, tunneling and topological transport in novel nanojunctions; Kratica: C3TiNN; Voditelj: Danko Radić; Pravna nadležnost: Hrvatska; Financijer: Hrvatska zaklada za znanost; Linija financiranja: Research Projects
• Projekt: Šifra: KK.01.1.1.01.0004; Naziv (hrvatski): Provedba vrhunskih istraživanja u sklopu Znanstvenog centra izvrsnosti za kvantne i kompleksne sustave te reprezentacije Liejevih algebri; Naziv (engleski): Implementation of top research within the Scientific Center of Excellence for Quantum and Complex Systems, and Representations of Lie Algebras; Kratica: QuantiXLie; Voditelj: Hrvoje Buljan; Pravna nadležnost: eu; Financijer: Europska komisija; Linija financiranja: European Regional Development Fund
• URL dokumenta: https://link.aps.org/doi/10.1103/PhysRevB.104.155143
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: © 2021 American Physical Society. Received 12 August 2021; Accepted 13 October 2021; Published 23 December 2021.
• Datum i vrijeme pohrane: 2024-09-18 12:04:54