Observation of a Charge Density Wave Incommensuration Near the Superconducting Dome in
Abstract
X-ray diffraction was employed to study the evolution of the charge density wave (CDW) in CuxTiSe2 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:
-
- 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
- Univ. of Illinois, Urbana, IL (United States). Department of Physics and Materials Research Laboratory
- Drexel Univ., Philadelphia, PA (United States). Department of Physics
- Cornell Univ., Ithaca, NY (United States). Cornell High Energy Synchrotron Source
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); National Institutes of Health (NIH); Gordon and Betty Moore Foundation
- OSTI Identifier:
- 1352597
- Alternate Identifier(s):
- OSTI ID: 1339019; OSTI ID: 1958833
- Grant/Contract Number:
- AC02-06CH11357; FG02-06ER46285
- Resource 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)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Charge density waves; Domains; Order parameters; Phase transitions; Superconductivity; Transition temperature; X-ray scattering; X-ray scattering, charge density waves
Citation Formats
Kogar, A., de la Pena, G. A., Lee, Sangjun, Fang, Y., Sun, S. X. -L., Lioi, D. B., Karapetrov, G., Finkelstein, K. D., Ruff, J. P. C., Abbamonte, P., and Rosenkranz, S. Observation of a Charge Density Wave Incommensuration Near the Superconducting Dome in CuxTiSe2. United States: N. p., 2017.
Web. doi:10.1103/PhysRevLett.118.027002.
Kogar, A., de la Pena, G. A., Lee, Sangjun, Fang, Y., Sun, S. X. -L., Lioi, D. B., Karapetrov, G., Finkelstein, K. D., Ruff, J. P. C., Abbamonte, P., & Rosenkranz, S. Observation of a Charge Density Wave Incommensuration Near the Superconducting Dome in CuxTiSe2. United States. https://doi.org/10.1103/PhysRevLett.118.027002
Kogar, A., de la Pena, G. A., Lee, Sangjun, Fang, Y., Sun, S. X. -L., Lioi, D. B., Karapetrov, G., Finkelstein, K. D., Ruff, J. P. C., Abbamonte, P., and Rosenkranz, S. Wed .
"Observation of a Charge Density Wave Incommensuration Near the Superconducting Dome in CuxTiSe2". United States. https://doi.org/10.1103/PhysRevLett.118.027002. https://www.osti.gov/servlets/purl/1352597.
@article{osti_1352597,
title = {Observation of a Charge Density Wave Incommensuration Near the Superconducting Dome in CuxTiSe2},
author = {Kogar, A. and de la Pena, G. A. and Lee, Sangjun and Fang, Y. and Sun, S. X. -L. and Lioi, D. B. and Karapetrov, G. and Finkelstein, K. D. and Ruff, J. P. C. and Abbamonte, P. and Rosenkranz, S.},
abstractNote = {X-ray diffraction was employed to study the evolution of the charge density wave (CDW) in CuxTiSe2 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.},
doi = {10.1103/PhysRevLett.118.027002},
journal = {Physical Review Letters},
number = 2,
volume = 118,
place = {United States},
year = {Wed Jan 11 00:00:00 EST 2017},
month = {Wed Jan 11 00:00:00 EST 2017}
}
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