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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

Journal Article · · Physical Review B
 [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.
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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.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Swiss National Science Foundation (SNSF); National Natural Science Foundation of China (NSFC); National Key Research and Development Program of China; Chinese Academy of Sciences (CAS), Beijing (China); Univ. of California, Santa Barbara, CA (United States)
Grant/Contract Number:
SC00112704; 11404342; 2017YFA0403502; 2017483
OSTI ID:
1426457
Alternate ID(s):
OSTI ID: 1416842
Report Number(s):
BNL-203346-2018-JAAM; PRBMDO; TRN: US1802287
Journal Information:
Physical Review B, Vol. 97, Issue 4; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

References (17)

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Broken rotational symmetry in the pseudogap phase of a high-Tc superconductor journal January 2010
X-Ray Diffraction Observations of a Charge-Density-Wave Order in Superconducting Ortho-II YBa 2 Cu 3 O 6.54 Single Crystals in Zero Magnetic Field journal March 2013
Infrared signature of the charge-density-wave gap in ZrTe3 journal December 2005
Superconductivity at 5.2 K in ZrTe 3 polycrystals and the effect of Cu and Ag intercalation journal May 2012
Coexistence of Bulk Superconductivity and Charge Density Wave in Cu x ZrTe 3 journal June 2011
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Transport and elastic anomalies in ZrTe3 journal March 1984
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Electrodynamics of Solids book January 2010
Superconductivity and Charge Density Wave in ZrTe3−xSex journal June 2016
Charge Order Driven by Fermi-Arc Instability in Bi2Sr2-xLaxCuO6+  journal December 2013
Long-Range Incommensurate Charge Fluctuations in (Y,Nd)Ba2Cu3O6+x journal July 2012
Excitation spectrum in Ni- and Cu-doped ZrTe 3 journal January 2014
Pressure effect on competition between charge density wave and superconductivity in ZrTe 3 : Appearance of pressure-induced reentrant superconductivity journal April 2005

Figures / Tables (6)

FIG. 1(p. 5)figure FIG. 1
FIG. 2(p. 5)figure FIG. 2
FIG. 3(p. 6)figure FIG. 3
FIG. 4(p. 6)figure FIG. 4
FIG. 5(p. 7)figure FIG. 5
FIG. 6(p. 7)figure FIG. 6

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Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
charge density waves
electronic structure
optical conductivity
chalcogenides
reflectivity