Observation of a Charge Density Wave Incommensuration Near the Superconducting Dome in CuxTiSe2

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.

doi:10.1103/PhysRevLett.118.027002

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

Journal Article · Wed Jan 11 00:00:00 EST 2017 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.118.027002· OSTI ID:1352597

Kogar, A. ^[1]; de la Pena, G. A. ^[2]; Lee, Sangjun ^[2]; Fang, Y. ^[2]; Sun, S. X. -L. ^[2]; Lioi, D. B. ^[3]; Karapetrov, G. ^[3]; Finkelstein, K. D. ^[4]; Ruff, J. P. C. ^[4]; Abbamonte, P. ^[2]; Rosenkranz, S. ^[5]

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

X-ray diffraction was employed to study the evolution of the charge density wave (CDW) in Cu_xTiSe₂ 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.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); National Institutes of Health (NIH); Gordon and Betty Moore Foundation

Grant/Contract Number:: AC02-06CH11357; FG02-06ER46285

OSTI ID:: 1352597

Alternate ID(s):: OSTI ID: 1339019; OSTI ID: 1958833

Journal Information:: Physical Review Letters, Vol. 118, Issue 2; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 60 works

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Effect of Cu intercalation and pressure on excitonic interaction in $1 T - TiS e_{2}$ Kitou, S.; Nakano, A.; Kobayashi, S. Physical Review B, Vol. 99, Issue 10 https://doi.org/10.1103/physrevb.99.104109	journal	March 2019
Quasimolecular complexes in the Cu _x TiSe _2−y S _y intercalation compound Shkvarin, A. S.; Merentsov, A. I.; Titov, A. A. Journal of Materials Chemistry C, Vol. 6, Issue 46 https://doi.org/10.1039/c8tc04115f	journal	January 2018
Electron-phonon coupling and superconductivity-induced distortion of the phonon lineshape in $V_{3} Si$ Sauer, A.; Zocco, D. A.; Said, A. H. Physical Review B, Vol. 99, Issue 13 https://doi.org/10.1103/physrevb.99.134511	journal	April 2019
Evidence for topological defects in a photoinduced phase transition Zong, Alfred; Kogar, Anshul; Bie, Ya-Qing Nature Physics, Vol. 15, Issue 1 https://doi.org/10.1038/s41567-018-0311-9	journal	October 2018
Distinction between pristine and disorder-perturbed charge density waves in ZrTe3 Yue, Li; Xue, Shangjie; Li, Jiarui Nature Communications, Vol. 11, Issue 1 https://doi.org/10.1038/s41467-019-13813-y	journal	January 2020
Discommensuration-enhanced superconductivity in the charge density wave phases of transition-metal dichalcogenides Chen, Chuan; Su, Lei; Neto, A. H. Castro arXiv https://doi.org/10.48550/arxiv.1806.08064	text	January 2018
Ultrafast charge ordering by self-amplified exciton–phonon dynamics in TiSe2 Lian, Chao; Zhang, Sheng-Jie; Hu, Shi-Qi Nature Communications, Vol. 11, Issue 1 https://doi.org/10.1038/s41467-019-13672-7	journal	January 2020
Spectroscopic fingerprints of many-body renormalization in $1 T − {TiSe}_{2}$ Zhao, J.; Lee, Kyungmin; Li, J. Physical Review B, Vol. 100, Issue 4 https://doi.org/10.1103/physrevb.100.045106	journal	July 2019
On the origin of the anomalous peak in the resistivity of ${TiSe}_{2}$ Watson, Matthew D.; Beales, Adam M.; King, Philip D. C. Physical Review B, Vol. 99, Issue 19 https://doi.org/10.1103/physrevb.99.195142	journal	May 2019
Honeycomb lattice type charge density wave associated with interlayer Cu ions ordering in $1 T - C u_{x} TiS e_{2}$ Kitou, Shunsuke; Kobayashi, Shintaro; Kaneko, Tatsuya Physical Review B, Vol. 99, Issue 8 https://doi.org/10.1103/physrevb.99.081111	journal	February 2019
Charge density wave hampers exciton condensation in $1 T − {TiSe}_{2}$ Lian, Chao; Ali, Zulfikhar A.; Wong, Bryan M. Physical Review B, Vol. 100, Issue 20 https://doi.org/10.1103/physrevb.100.205423	journal	November 2019

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

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