|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'503'724
Articles rated: 2609
24 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Chiral fermion reversal in chiral crystals | | Hang Li
; Sheng Xu
; Zhi-Cheng Rao
; Li-Qin Zhou
; Zhi-Jun Wang
; Shi-Ming Zhou
; Shang-Jie Tian
; Shun-Ye Gao
; Jia-Jun Li
; Yao-Bo Huang
; He-Chang Lei
; Hong-Ming Weng
; Yu-Jie Sun
; Tian-Long Xia
; Tian Qian
; Hong Ding
; | | Date: |
5 Dec 2019 | | Abstract: | In materials chiral fermions such as Weyl fermions are characterized by
nonzero chiral charges, which are singular points of Berry curvature in
momentum space. Recently, new types of chiral fermions beyond Weyl fermions
have been discovered in structurally chiral crystals CoSi, RhSi and PtAl. Here,
we have synthesized RhSn single crystals, which have opposite structural
chirality to the CoSi crystals we previously studied. Using angle-resolved
photoemission spectroscopy, we show that the bulk electronic structures of RhSn
are consistent with the band calculations and observe evident surface Fermi
arcs and helical surface bands, confirming the existence of chiral fermions in
RhSn. It is noteworthy that the helical surface bands of the RhSn and CoSi
crystals have opposite handedness, meaning that the chiral fermions are
reversed in the crystals of opposite structural chirality. Our discovery
establishes a direct connection between chiral fermions in momentum space and
chiral lattices in real space. | | Source: | arXiv, 1912.2383 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER