Interplanar Coupling-dependent Magnetoresistivity in High-purity Layered Metals

Overview

Journal Nat Commun

Specialty Biology

Date 2016 Mar 30

PMID 27020134

Citations 8

Authors

N Kikugawa

P Goswami

A Kiswandhi

E S Choi

D Graf

R E Baumbach

J S Brooks

K Sugii

Y Iida

M Nishio

S Uji

T Terashima

P M C Rourke

N E Hussey

H Takatsu

S Yonezawa

Y Maeno

L Balicas

Affiliations

Soon will be listed here.

Abstract

The magnetic field-induced changes in the conductivity of metals are the subject of intense interest, both for revealing new phenomena and as a valuable tool for determining their Fermi surface. Here we report a hitherto unobserved magnetoresistive effect in ultra-clean layered metals, namely a negative longitudinal magnetoresistance that is capable of overcoming their very pronounced orbital one. This effect is correlated with the interlayer coupling disappearing for fields applied along the so-called Yamaji angles where the interlayer coupling vanishes. Therefore, it is intrinsically associated with the Fermi points in the field-induced quasi-one-dimensional electronic dispersion, implying that it results from the axial anomaly among these Fermi points. In its original formulation, the anomaly is predicted to violate separate number conservation laws for left- and right-handed chiral (for example, Weyl) fermions. Its observation in PdCoO2, PtCoO2 and Sr2RuO4 suggests that the anomaly affects the transport of clean conductors, in particular near the quantum limit.

Citing Articles

Directional ballistic transport in the two-dimensional metal PdCoO.

Bachmann M, Sharpe A, Baker G, Barnard A, Putzke C, Scaffidi T Nat Phys. 2022; 18(7):819-824.

PMID: 35847475 PMC: 9279146. DOI: 10.1038/s41567-022-01570-7.

Interlayer quantum transport in Dirac semimetal BaGa.

Xu S, Bao C, Guo P, Wang Y, Yu Q, Sun L Nat Commun. 2020; 11(1):2370.

PMID: 32398654 PMC: 7217856. DOI: 10.1038/s41467-020-15854-0.

Spin-dependent scattering induced negative magnetoresistance in topological insulator BiTe nanowires.

Bhattacharyya B, Singh B, Aloysius R, Yadav R, Su C, Lin H Sci Rep. 2019; 9(1):7836.

PMID: 31127174 PMC: 6534536. DOI: 10.1038/s41598-019-44265-5.

Unconventional aspects of electronic transport in delafossite oxides.

Daou R, Fresard R, Eyert V, Hebert S, Maignan A Sci Technol Adv Mater. 2018; 18(1):919-938.

PMID: 29383043 PMC: 5784665. DOI: 10.1080/14686996.2017.1393633.

Gigantic negative magnetoresistance in the bulk of a disordered topological insulator.

Breunig O, Wang Z, Taskin A, Lux J, Rosch A, Ando Y Nat Commun. 2017; 8:15545.

PMID: 28541291 PMC: 5458500. DOI: 10.1038/ncomms15545.

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