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Title: Impact of the charge density wave state in the electrodynamic response of ZrTe 3 - x Se x : Optical evidence for a pseudogap phase

The emergence of superconductivity upon progressively suppressing the long-range, charge-density-wave (CDW) order characterizes the phase diagram of several materials of interest in the on-going solid-state physics research. Se-doped ZrTe 3 compounds provide the most recent, suitable arena in order to investigate the interplay of otherwise competing orders in layeredlike two-dimensional systems. We present an optical study of the CDW state in ZrTe 3-xSe x at selected Se dopings, based on the measurement of the reflectivity from the far-infrared up to the ultraviolet, as a function of temperature. We particularly focus our attention to the redistribution of the spectral weight, which images the impact of the CDW state within the optical conductivity across the phase diagram of the title compounds. The electrodynamic response is consistent with a scenario based on a long-range CDW condensate at low Se doping. Upon increasing the Se content, this then gives way to local, short-range order CDW segments. Thus, our spectral weight analysis reveals the presence of a pseudogap phase, as fingerprint of the CDW precursor effects and thus shaping the charge dynamics of the title compounds in their normal state, preceding the onset of superconductivity.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5] ;  [1]
  1. Federal Inst. of Technology, Zurich (Switzerland). Lab. for Solid State Physics
  2. Federal Inst. of Technology, Zurich (Switzerland). Lab. for Solid State Physics; Indian Inst. of Technology (IIT), Madras (India). National Center for Catalysis Research
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Chinese Academy of Sciences (CAS) and Univ. of Science and Technology, Hefei (China). AnHui Province Key Lab. of Condensed Matter Physics at Extreme Conditions and High Magnetic Field Lab.
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Chinese Academy of Sciences (CAS), Hefei (China). Key Lab. of Materials Physics and Inst. of Solid State Physics
  5. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
Publication Date:
Report Number(s):
BNL-203346-2018-JAAM
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1802287
Grant/Contract Number:
SC00112704; 11404342; 2017YFA0403502; 2017483
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 4; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Swiss National Science Foundation (SNSF); National Natural Science Foundation of China (NNSFC); National Key Research and Development Program of China; Chinese Academy of Sciences (CAS), Beijing (China); Univ. of California, Santa Barbara, CA (United States)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; charge density waves; electronic structure; optical conductivity; chalcogenides; reflectivity
OSTI Identifier:
1426457
Alternate Identifier(s):
OSTI ID: 1416842

Chinotti, M., Ethiraj, J., Mirri, C., Zhu, Xiangde, Li, Lijun, Petrovic, C., and Degiorgi, L.. Impact of the charge density wave state in the electrodynamic response of ZrTe3-xSex : Optical evidence for a pseudogap phase. United States: N. p., Web. doi:10.1103/PhysRevB.97.045117.
Chinotti, M., Ethiraj, J., Mirri, C., Zhu, Xiangde, Li, Lijun, Petrovic, C., & Degiorgi, L.. Impact of the charge density wave state in the electrodynamic response of ZrTe3-xSex : Optical evidence for a pseudogap phase. United States. doi:10.1103/PhysRevB.97.045117.
Chinotti, M., Ethiraj, J., Mirri, C., Zhu, Xiangde, Li, Lijun, Petrovic, C., and Degiorgi, L.. 2018. "Impact of the charge density wave state in the electrodynamic response of ZrTe3-xSex : Optical evidence for a pseudogap phase". United States. doi:10.1103/PhysRevB.97.045117.
@article{osti_1426457,
title = {Impact of the charge density wave state in the electrodynamic response of ZrTe3-xSex : Optical evidence for a pseudogap phase},
author = {Chinotti, M. and Ethiraj, J. and Mirri, C. and Zhu, Xiangde and Li, Lijun and Petrovic, C. and Degiorgi, L.},
abstractNote = {The emergence of superconductivity upon progressively suppressing the long-range, charge-density-wave (CDW) order characterizes the phase diagram of several materials of interest in the on-going solid-state physics research. Se-doped ZrTe3 compounds provide the most recent, suitable arena in order to investigate the interplay of otherwise competing orders in layeredlike two-dimensional systems. We present an optical study of the CDW state in ZrTe3-xSex at selected Se dopings, based on the measurement of the reflectivity from the far-infrared up to the ultraviolet, as a function of temperature. We particularly focus our attention to the redistribution of the spectral weight, which images the impact of the CDW state within the optical conductivity across the phase diagram of the title compounds. The electrodynamic response is consistent with a scenario based on a long-range CDW condensate at low Se doping. Upon increasing the Se content, this then gives way to local, short-range order CDW segments. Thus, our spectral weight analysis reveals the presence of a pseudogap phase, as fingerprint of the CDW precursor effects and thus shaping the charge dynamics of the title compounds in their normal state, preceding the onset of superconductivity.},
doi = {10.1103/PhysRevB.97.045117},
journal = {Physical Review B},
number = 4,
volume = 97,
place = {United States},
year = {2018},
month = {1}
}