We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Dramatic Tuning of the Topological Hall Effect in A<sub>x</sub>RhO<sub>2</sub> (A = K, Rb, and Cs) Crystals by Electron Concentration or Cation.
- Authors
Lv, Yang‐Yang; Zhang, Bin‐Bin; Li, Xiao; Lin, Dajun; Yao, Shu‐Hua; Xiong, Ye; Zhou, Jian; Chen, Y. B.; Weng, Hongming; Shi, Y. G.; Lu, Ming‐Hui; Chen, Yan‐Feng
- Abstract
Topological Hall effect, being an unconventional anomalous Hall effect, is originated from the real‐space Berry curvature caused by the nontrivial topological spin textures in materials. Manipulations of nontrivial magnetic structure and related topological Hall effect are very important for the study of the chiral magnet. Herein, it is experimentally observed that the significant topological Hall conductivity σxy in antiferromagnetic K0.5RhO2 can reach 3.5% of ν = 1 quantum conductivity below 20 K. Furthermore, by adjusting the concentration of K‐cation different from 0.5 in KxRhO2 or substituting the K cations by Rb or Cs to form Rb0.5RhO2 or Cs0.5RhO2, it is observed that the topological Hall effect is much weakened or even disappeared. This evolution, verified by the theoretical calculations, is attributed to the unstable ground state of the non‐coplanar spin structure in KxRhO2 (x = 0.4 and 0.6) and Cs0.5RhO2. The significantly tunable topological Hall effect in AxRhO2 makes it prospective on logical/sensor devices of spintronics.
- Subjects
HALL effect; ALKALI metals; ANOMALOUS Hall effect; RUBIDIUM; MAGNETIC structure; MATERIALS texture; ELECTRONS; CHIRALITY of nuclear particles
- Publication
Advanced Functional Materials, 2023, Vol 33, Issue 11, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202211214