BROWSE

Related Scientist

cinap's photo.

cinap
나노구조물리연구단
more info

ITEM VIEW & DOWNLOAD

Tunable Berry curvature and transport crossover in topological Dirac semimetal KZnBi

Cited 0 time in webofscience Cited 0 time in scopus
365 Viewed 0 Downloaded
Title
Tunable Berry curvature and transport crossover in topological Dirac semimetal KZnBi
Author(s)
Junseong Song; Park, Byung Cheol; Kyung Ik Sim; Bang, Joonho; Kim, Sunghun; Yang, Zhuo; Kohama, Yoshimitsu; Kim, Yeongkwan; Sung Wng Kim
Publication Date
2021-09
Journal
Npj Quantum Materials, v.6, no.1
Publisher
NATURE PUBLISHING GROUP
Abstract
© 2021, The Author(s).Topological Dirac semimetals have emerged as a platform to engineer Berry curvature with time-reversal symmetry breaking, which allows to access diverse quantum states in a single material system. It is of interest to realize such diversity in Dirac semimetals that provides insight on correlation between Berry curvature and quantum transport phenomena. Here, we report the transition between anomalous Hall and chiral fermion states in three-dimensional topological Dirac semimetal KZnBi, which is demonstrated by tuning the direction and flux of Berry curvature. Angle-dependent magneto-transport measurements show that both anomalous Hall resistance and positive magnetoresistance are maximized at 0° between net Berry curvature and rotational axis. We find that the unexpected crossover of anomalous Hall resistance and negative magnetoresistance suddenly occurs when the angle reaches to ~70°, indicating that Berry curvature strongly correlates with quantum transports of Dirac and chiral fermions. It would be interesting to tune Berry curvature within other quantum phases such as topological superconductivity.
URI
https://pr.ibs.re.kr/handle/8788114/10449
DOI
10.1038/s41535-021-00378-7
ISSN
2397-4648
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse