File Download
There are no files associated with this item.
Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1103/PhysRevB.108.L241407
- Scopus: eid_2-s2.0-85181399131
- WOS: WOS:001145879100001
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Metallic quantized anomalous Hall effect without chiral edge states
Title | Metallic quantized anomalous Hall effect without chiral edge states |
---|---|
Authors | |
Issue Date | 28-Dec-2023 |
Publisher | American Physical Society |
Citation | Physical Review B, 2023, v. 108, n. 24, p. 1-5 How to Cite? |
Abstract | The quantum anomalous Hall effect (QAHE) is a topological state of matter with a quantized Hall resistance. It has been observed in some two-dimensional insulating materials such as magnetic topological insulator films and twisted bilayer graphene. These materials are insulating in the bulk but possess chiral edge states carrying the edge current around the system. Here we discover a metallic QAHE in a topological insulator film with a magnetic sandwich heterostructure, in which the Hall conductance is quantized to e(2)/h but the longitudinal conductance remains finite. This effect is attributed to the existence of a pair of massless Dirac cones of surface fermions, with each contributing half of the Hall conductance due to the quantum anomaly. It is not characterized by a Chern number and is not associated with any chiral edge states. Our study offers insights into topological transport phenomena and topological metallic states of matter. |
Persistent Identifier | http://hdl.handle.net/10722/339934 |
ISSN | 2021 Impact Factor: 3.908 2020 SCImago Journal Rankings: 1.780 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Bai, KZ | - |
dc.contributor.author | Fu, B | - |
dc.contributor.author | Zhang, ZY | - |
dc.contributor.author | Shen, SQ | - |
dc.date.accessioned | 2024-03-11T10:40:25Z | - |
dc.date.available | 2024-03-11T10:40:25Z | - |
dc.date.issued | 2023-12-28 | - |
dc.identifier.citation | Physical Review B, 2023, v. 108, n. 24, p. 1-5 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | http://hdl.handle.net/10722/339934 | - |
dc.description.abstract | The quantum anomalous Hall effect (QAHE) is a topological state of matter with a quantized Hall resistance. It has been observed in some two-dimensional insulating materials such as magnetic topological insulator films and twisted bilayer graphene. These materials are insulating in the bulk but possess chiral edge states carrying the edge current around the system. Here we discover a metallic QAHE in a topological insulator film with a magnetic sandwich heterostructure, in which the Hall conductance is quantized to e(2)/h but the longitudinal conductance remains finite. This effect is attributed to the existence of a pair of massless Dirac cones of surface fermions, with each contributing half of the Hall conductance due to the quantum anomaly. It is not characterized by a Chern number and is not associated with any chiral edge states. Our study offers insights into topological transport phenomena and topological metallic states of matter. | - |
dc.language | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.ispartof | Physical Review B | - |
dc.title | Metallic quantized anomalous Hall effect without chiral edge states | - |
dc.type | Article | - |
dc.identifier.doi | 10.1103/PhysRevB.108.L241407 | - |
dc.identifier.scopus | eid_2-s2.0-85181399131 | - |
dc.identifier.volume | 108 | - |
dc.identifier.issue | 24 | - |
dc.identifier.spage | 1 | - |
dc.identifier.epage | 5 | - |
dc.identifier.eissn | 2469-9969 | - |
dc.identifier.isi | WOS:001145879100001 | - |
dc.publisher.place | COLLEGE PK | - |
dc.identifier.issnl | 2469-9950 | - |