The Chiral Anomaly in Dirac and Weyl Semimetals

N. Phuan Ong

doi:10.1142/9789811265068_0008

The Chiral Anomaly in Dirac and Weyl Semimetals

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

The prediction that the chiral anomaly may be observable as a negative longitudinal magnetoresistance (LMR) in Weyl semimetals has attracted considerable interest in the condensed-matter physics community researching topological materials. I review transport experiments that address this prediction, focussing on the two semimetals, Na3Bi and GdPtBi, and emphasizing symmetry-protection of the Dirac nodes in these systems. I will describe tests that can distinguish the chiral anomaly LMR from artefacts caused by field-induced inhomogeneous current flow.

Original language	English (US)
Title of host publication	Chiral Matter
Subtitle of host publication	Proceedings of the Nobel Symposium 167
Publisher	World Scientific Publishing Co.
Pages	95-107
Number of pages	13
ISBN (Electronic)	9789811265068
ISBN (Print)	9789811265051
DOIs	https://doi.org/10.1142/9789811265068_0008
State	Published - Jan 1 2023

All Science Journal Classification (ASJC) codes

General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy

Keywords

chiral anomaly
current jetting
Dirac and Weyl semimetals
longitudnial magnetoresistance
symmetry protection

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10.1142/9789811265068_0008

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AB - The prediction that the chiral anomaly may be observable as a negative longitudinal magnetoresistance (LMR) in Weyl semimetals has attracted considerable interest in the condensed-matter physics community researching topological materials. I review transport experiments that address this prediction, focussing on the two semimetals, Na3Bi and GdPtBi, and emphasizing symmetry-protection of the Dirac nodes in these systems. I will describe tests that can distinguish the chiral anomaly LMR from artefacts caused by field-induced inhomogeneous current flow.

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The Chiral Anomaly in Dirac and Weyl Semimetals

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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