Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session F14: Electronic Structure of Topological Materials (Photoemission, etc.) I
8:00 AM–11:00 AM,
Tuesday, March 5, 2024
Room: M100E
Sponsoring
Unit:
DCMP
Chair: Madhab Neupane, University of Central Florida
Abstract: F14.00001 : Broken screw rotational symmetry in the near-surface electronic structure of nodal line materials
8:00 AM–8:12 AM
Presenter:
Hiroaki Tanaka
(The University of Tokyo)
Authors:
Hiroaki Tanaka
(The University of Tokyo)
Shota Okazaki
(Tokyo Institute of Technology)
Masaru Kobayashi
(Tokyo Institute of Technology)
Yuto Fukushima
(The University of Tokyo)
Yosuke Arai
(The University of Tokyo)
Takushi Iimori
(The University of Tokyo)
Mikk Lippmaa
(The University of Tokyo)
Kohei Yamagami
(Japan Synchrotron Radiation Research Institute)
Yoshinori Kotani
(Japan Synchrotron Radiation Research Institute)
Fumio Komori
(The University of Tokyo)
Kenta Kuroda
(Hiroshima University)
Takao Sasagawa
(Tokyo Institute of Technology)
Takeshi Kondo
(The University of Tokyo)
In this presentation, we present an extensive ARPES study of the differences between the near-surface electronic structure and the bulk structure hosting nodal lines. Due to electron scattering processes, ARPES can only capture the near-surface electronic structure of a crystal up to a depth of a few nanometers from the surface. We examine the near-surface electronic structure of $AB$-stacked $2H$-$mathrm{Nb}mathrm{S}_2$ and $h$BN crystals, both of which host bulk nodal lines on the $k_z=pi/c$ plane. We found gapped band dispersions on the $k_z=pi/c$ plane, indicating that the broken screw rotational symmetry at the surface opens an energy gap in the near-surface electronic structure. Taking into account the surface sensitivity of ARPES, our photoemission intensity calculations [1] could reproduce such gapped spectra by adjusting the probing depth parameter in the simulation. Our results show that incomplete nonsymmorphic symmetries can alter the near-surface electronic structure associated with the bulk nodal lines [2].
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700