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Title: Observing photo-induced chiral edge states of graphene nanoribbons in pump-probe spectroscopies

Abstract

Photo-induced edge states in low-dimensional materials have attracted considerable attention due to the tunability of topological properties and dispersion. Specifically, graphene nanoribbons have been predicted to host chiral edge modes upon irradiation with circularly polarized light. Here, we present numerical calculations of time-resolved angle resolved photoemission spectroscopy and trRIXS of a graphene nanoribbon. We characterize pump-probe spectroscopic signatures of photo-induced edge states, illustrate the origin of distinct spectral features that arise from Floquet topological edge modes, and investigate the roles of incoming photon energies and finite core–hole lifetime in RIXS. With momentum, energy, and time resolution, pump-probe spectroscopies can play an important role in understanding the behavior of photo-induced topological states of matter.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3];  [4]; ORCiD logo [5]
  1. Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES)
  2. Clemson Univ., SC (United States)
  3. Simons Foundation Flatiron Inst., New York, NY (United States)
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Univ. of North Dakota, Grand Forks, ND (United States)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; Simons Foundation
OSTI Identifier:
1768627
Alternate Identifier(s):
OSTI ID: 1668870
Grant/Contract Number:  
AC02-76SF00515; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
npj Quantum Materials
Additional Journal Information:
Journal Volume: 5; Journal Issue: 1; Journal ID: ISSN 2397-4648
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Graphene; Topological matter

Citation Formats

Chen, Yuan, Wang, Yao, Claassen, Martin, Moritz, Brian, and Devereaux, Thomas P. Observing photo-induced chiral edge states of graphene nanoribbons in pump-probe spectroscopies. United States: N. p., 2020. Web. doi:10.1038/s41535-020-00283-5.
Chen, Yuan, Wang, Yao, Claassen, Martin, Moritz, Brian, & Devereaux, Thomas P. Observing photo-induced chiral edge states of graphene nanoribbons in pump-probe spectroscopies. United States. https://doi.org/10.1038/s41535-020-00283-5
Chen, Yuan, Wang, Yao, Claassen, Martin, Moritz, Brian, and Devereaux, Thomas P. Tue . "Observing photo-induced chiral edge states of graphene nanoribbons in pump-probe spectroscopies". United States. https://doi.org/10.1038/s41535-020-00283-5. https://www.osti.gov/servlets/purl/1768627.
@article{osti_1768627,
title = {Observing photo-induced chiral edge states of graphene nanoribbons in pump-probe spectroscopies},
author = {Chen, Yuan and Wang, Yao and Claassen, Martin and Moritz, Brian and Devereaux, Thomas P.},
abstractNote = {Photo-induced edge states in low-dimensional materials have attracted considerable attention due to the tunability of topological properties and dispersion. Specifically, graphene nanoribbons have been predicted to host chiral edge modes upon irradiation with circularly polarized light. Here, we present numerical calculations of time-resolved angle resolved photoemission spectroscopy and trRIXS of a graphene nanoribbon. We characterize pump-probe spectroscopic signatures of photo-induced edge states, illustrate the origin of distinct spectral features that arise from Floquet topological edge modes, and investigate the roles of incoming photon energies and finite core–hole lifetime in RIXS. With momentum, energy, and time resolution, pump-probe spectroscopies can play an important role in understanding the behavior of photo-induced topological states of matter.},
doi = {10.1038/s41535-020-00283-5},
journal = {npj Quantum Materials},
number = 1,
volume = 5,
place = {United States},
year = {Tue Nov 10 00:00:00 EST 2020},
month = {Tue Nov 10 00:00:00 EST 2020}
}

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