Universität zu Köln

Legg, Henry F. ORCID: 0000-0003-0400-5370, Roessler, Matthias, Muenning, Felix, Fan, Dingxun, Breunig, Oliver ORCID: 0000-0001-8651-1757, Bliesener, Andrea, Lippertz, Gertjan ORCID: 0000-0002-4061-7027, Uday, Anjana ORCID: 0000-0002-9719-0458, Taskin, A. A., Loss, Daniel ORCID: 0000-0001-5176-3073, Klinovaja, Jelena ORCID: 0000-0001-7782-9624 and Ando, Yoichi ORCID: 0000-0002-3553-3355 (2022). Giant magnetochiral anisotropy from quantum-confined surface states of topological insulator nanowires. Nat. Nanotechnol., 17 (7). S. 696 - 702. BERLIN: NATURE PORTFOLIO. ISSN 1748-3395

Full text not available from this repository.

Abstract

Wireless technology relies on the conversion of alternating electromagnetic fields into direct currents, a process known as rectification. Although rectifiers are normally based on semiconductor diodes, quantum mechanical non-reciprocal transport effects that enable a highly controllable rectification were recently discovered(1-9). One such effect is magnetochiral anisotropy (MCA)(6-9), in which the resistance of a material or a device depends on both the direction of the current flow and an applied magnetic field. However, the size of rectification possible due to MCA is usually extremely small because MCA relies on inversion symmetry breaking that leads to the manifestation of spin-orbit coupling, which is a relativistic effect(6-8). In typical materials, the rectification coefficient gamma due to MCA is usually vertical bar gamma vertical bar less than or similar to 1A(-1) T-1 (refs. (8-12)) and the maximum values reported so far are vertical bar gamma vertical bar approximate to 100 A(-1) T-1 in carbon nanotubes(13) and ZrTe5 (ref. (14)). Here, to overcome this limitation, we artificially break the inversion symmetry via an applied gate voltage in thin topological insulator (TI) nanowire heterostructures and theoretically predict that such a symmetry breaking can lead to a giant MCA effect. Our prediction is confirmed via experiments on thin bulk-insulating (Bi1-xSbx)(2)Te-3 (BST) TI nanowires, in which we observe an MCA consistent with theory and vertical bar gamma vertical bar approximate to 100,000 A(-1) T-1, a very large MCA rectification coefficient in a normal conductor.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Legg, Henry F. UNSPECIFIED orcid.org/0000-0003-0400-5370 UNSPECIFIED Roessler, Matthias UNSPECIFIED UNSPECIFIED UNSPECIFIED Muenning, Felix UNSPECIFIED UNSPECIFIED UNSPECIFIED Fan, Dingxun UNSPECIFIED UNSPECIFIED UNSPECIFIED Breunig, Oliver UNSPECIFIED orcid.org/0000-0001-8651-1757 UNSPECIFIED Bliesener, Andrea UNSPECIFIED UNSPECIFIED UNSPECIFIED Lippertz, Gertjan UNSPECIFIED orcid.org/0000-0002-4061-7027 UNSPECIFIED Uday, Anjana UNSPECIFIED orcid.org/0000-0002-9719-0458 UNSPECIFIED Taskin, A. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Loss, Daniel UNSPECIFIED orcid.org/0000-0001-5176-3073 UNSPECIFIED Klinovaja, Jelena UNSPECIFIED orcid.org/0000-0001-7782-9624 UNSPECIFIED Ando, Yoichi UNSPECIFIED orcid.org/0000-0002-3553-3355 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-673716
DOI:	10.1038/s41565-022-01124-1
Journal or Publication Title:	Nat. Nanotechnol.
Volume:	17
Number:	7
Page Range:	S. 696 - 702
Date:	2022
Publisher:	NATURE PORTFOLIO
Place of Publication:	BERLIN
ISSN:	1748-3395
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Nanoscience & Nanotechnology; Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67371