Chirality-Driven Orbital Angular Momentum and Circular Dichroism in CoSi

被引：4

作者：

Brinkman, Stefanie Suzanne ^{[1
]}

Tan, Xin Liang ^{[1
,2
,3
]}

Brekke, Bjornulf ^{[1
]}

Mathisen, Anders Christian ^{[1
]}

Finnseth, Oyvind ^{[4
]}

Schenk, Richard Justin ^{[1
]}

Hagiwara, Kenta ^{[2
,3
]}

Huang, Meng-Jie ^{[5
,6
,7
]}

Buck, Jens ^{[5
,6
,8
]}

Kallaene, Matthias ^{[5
,6
,8
]}

Hoesch, Moritz ^{[7
]}

Rossnagel, Kai ^{[5
,6
,7
,8
]}

Yang, Kui-Hon Ou ^{[9
]}

Lin, Minn-Tsong ^{[9
,10
,11
]}

Shu, Guo-Jiun ^{[1
,2
,12
]}

Chen, Ying-Jiun ^{[2
,3
,13
,14
]}

Tusche, Christian ^{[2
,3
]}

Bentmann, Hendrik ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Ctr Quantum Spintron, Dept Phys, N-7491 Trondheim, Norway

[2] Forschungszentrum Julich, Peter Grunberg Inst PGI 6, D-52425 Julich, Germany

[3] Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany

[4] Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway

[5] Univ Kiel, Ruprecht Haensel Lab, D-24098 Kiel, Germany

[6] Univ Kiel, Ruprecht Haensel Lab, D-24098 Kiel, Germany

[7] Deutsch Elektronen Synchrotron DESY, Ruprecht Haensel Lab, Notkestr 85, D-22607 Hamburg, Germany

[8] Christian Albrechts Univ Kiel, Inst Experimentelle & Angew Phys, D-24098 Kiel, Germany

[9] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[10] Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan

[11] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan

[12] Natl Taipei Univ Technol, Dept Mat & Mineral Resources Engn, Taipei 10608, Taiwan

[13] Forschungszentrum Julich, Ernst Ruska Ctr Microscopy & Spect Electrons, D-52425 Julich, Germany

[14] Forschungszentrum Julich, Peter Grunberg Inst, D-52425 Julich, Germany

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 132卷 / 19期

关键词：

SPIN SELECTIVITY; SURFACE; SEMIMETAL;

D O I：

10.1103/PhysRevLett.132.196402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Chiral crystals and molecules were recently predicted to form an intriguing platform for unconventional orbital physics. Here, we report the observation of chirality-driven orbital textures in the bulk electronic structure of CoSi, a prototype member of the cubic B20 family of chiral crystals. Using circular dichroism in soft x-ray angle -resolved photoemission, we demonstrate the formation of a bulk orbital -angularmomentum texture and monopolelike orbital -momentum locking that depends on crystal handedness. We introduce the intrinsic chiral circular dichroism, ic CD, as a differential photoemission observable and a natural probe of chiral electron states. Our findings render chiral crystals promising for spin-orbitronics applications.

引用

页数：7

共 50 条

[1] Circular dichroism of cholesteric polymers and the orbital angular momentum of light
Loeffler, W.
Broer, D. J.
Woerdman, J. P.
PHYSICAL REVIEW A, 2011, 83 (06):
[2] Orbital angular momentum dichroism in nanoantennas
R. M. Kerber
J. M. Fitzgerald
S. S. Oh
D. E. Reiter
O. Hess
Communications Physics, 1
[3] Orbital angular momentum dichroism in nanoantennas
Kerber, R. M.
Fitzgerald, J. M.
Oh, S. S.
Reiter, D. E.
Hess, O.
COMMUNICATIONS PHYSICS, 2018, 1
[4] Chirality-driven orbital magnetic moments as a new probe for topological magnetic structures
Dias, Manuel dos Santos
Bouaziz, Juba
Bouhassoune, Mohammed
Bluegel, Stefan
Lounis, Samir
NATURE COMMUNICATIONS, 2016, 7
[5] Optical orbital angular momentum: twisted light and chirality
Forbes, Kayn A.
Andrews, David L.
OPTICS LETTERS, 2018, 43 (03) : 435 - 438
[6] Dichroism for orbital angular momentum using parametric amplification
Lowney, J.
Roger, T.
Faccio, D.
Wright, E. M.
PHYSICAL REVIEW A, 2014, 90 (05):
[7] Chirality-driven orbital magnetic moments as a new probe for topological magnetic structures
Manuel dos Santos Dias
Juba Bouaziz
Mohammed Bouhassoune
Stefan Blügel
Samir Lounis
Nature Communications, 7
[8] Chirality-driven ferroelectricity in LiCuVO4
Alexander Ruff
Peter Lunkenheimer
Hans-Albrecht Krug von Nidda
Sebastian Widmann
Andrey Prokofiev
Leonid Svistov
Alois Loidl
Stephan Krohns
npj Quantum Materials, 4
[9] Orbital angular momentum of twisted light: chirality and optical activity
Forbes, Kayn A.
Andrews, David L.
JOURNAL OF PHYSICS-PHOTONICS, 2021, 3 (02):
[10] Orbital angular momentum resolved electron magnetic chiral dichroism
Rotunno, Enzo
Zanfrognini, Matteo
Frabboni, Stefano
Rusz, Jan
Borkowski, Rafal E. Dunin
Karimi, Ebrahim
Grillo, Vincenzo
PHYSICAL REVIEW B, 2019, 100 (22)

← 1 2 3 4 5 →