skip to main content

DOE PAGESDOE PAGES

Title: Observation of a Charge Density Wave Incommensuration Near the Superconducting Dome in Cu x TiSe 2

X-ray diffraction was employed to study the evolution of the charge density wave (CDW) in Cu xTiSe 2 as a function of copper intercalation in order to clarify the relationship between the CDW and superconductivity. In this paper, the results show a CDW incommensuration arising at an intercalation value coincident with the onset of superconductivity at around x = 0.055(5) . Additionally, it was found that the charge density wave persists to higher intercalant concentrations than previously assumed, demonstrating that the CDW does not terminate inside the superconducting dome. A charge density wave peak was observed in samples up to x = 0.091(6) , the highest copper concentration examined in this study. Lastly, the phase diagram established in this work suggests that charge density wave incommensuration may play a role in the formation of the superconducting state.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3] ;  [3] ;  [4] ;  [4] ;  [2] ;  [5]
  1. Univ. of Illinois, Urbana, IL (United States). Department of Physics and Materials Research Laboratory; Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  2. Univ. of Illinois, Urbana, IL (United States). Department of Physics and Materials Research Laboratory
  3. Drexel Univ., Philadelphia, PA (United States). Department of Physics
  4. Cornell Univ., Ithaca, NY (United States). Cornell High Energy Synchrotron Source
  5. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Publication Date:
Grant/Contract Number:
AC02-06CH11357; FG02-06ER46285
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 118; Journal Issue: 2; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); National Institutes of Health (NIH); Gordon and Betty Moore Foundation
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1352597
Alternate Identifier(s):
OSTI ID: 1339019