English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Linear and nonlinear optical responses in the chiral multifold semimetal RhSi

Ni, Z., Xu, B., Sánchez-Martínez, M.-Á., Zhang, Y., Manna, K., Bernhard, C., et al. (2020). Linear and nonlinear optical responses in the chiral multifold semimetal RhSi. npj Quantum Materials, 5(1): 96, pp. 1-10. doi:10.1038/s41535-020-00298-y.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0007-CE26-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-CE2A-3
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Ni, Zhuoliang1, Author
Xu, B.1, Author
Sánchez-Martínez, M.-Á. 1, Author
Zhang, Y.2, Author              
Manna, K.2, Author              
Bernhard, C.1, Author
Venderbos, J. W. F.1, Author
de Juan, F.1, Author
Felser, C.3, Author              
Grushin, A. G.1, Author
Wu, Liang1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

Content

show
hide
Free keywords: -
 Abstract: Chiral topological semimetals are materials that break both inversion and mirror symmetries. They host interesting phenomena such as the quantized circular photogalvanic effect (CPGE) and the chiral magnetic effect. In this work, we report a comprehensive theoretical and experimental analysis of the linear and nonlinear optical responses of the chiral topological semimetal RhSi, which is known to host multifold fermions. We show that the characteristic features of the optical conductivity, which display two distinct quasi-linear regimes above and below 0.4 eV, can be linked to excitations of different kinds of multifold fermions. The characteristic features of the CPGE, which displays a sign change at 0.4 eV and a large non-quantized response peak of around 160 mu A/V-2 at 0.7 eV, are explained by assuming that the chemical potential crosses a flat hole band at the Brillouin zone center. Our theory predicts that, in order to observe a quantized CPGE in RhSi, it is necessary to increase the chemical potential as well as the quasiparticle lifetime. More broadly, our methodology, especially the development of the broadband terahertz emission spectroscopy, could be widely applied to study photogalvanic effects in noncentrosymmetric materials and in topological insulators in a contact-less way and accelerate the technological development of efficient infrared detectors based on topological semimetals.

Details

show
hide
Language(s): eng - English
 Dates: 2020-12-182020-12-18
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: npj Quantum Materials
  Other : npj Quantum Mater.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: [London] : Nature Publishing Group
Pages: - Volume / Issue: 5 (1) Sequence Number: 96 Start / End Page: 1 - 10 Identifier: ISSN: 2397-4648
CoNE: https://pure.mpg.de/cone/journals/resource/2397-4648