English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Charge Density Wave Order and Fluctuations above TCDW and below Superconducting Tc in the Kagome Metal CsV3Sb5

MPS-Authors
/persons/resource/persons260774

Chen,  D.
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126838

Schnelle,  W.
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126601

Felser,  C.
Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Chen, Q., Chen, D., Schnelle, W., Felser, C., & Gaulin, B. D. (2022). Charge Density Wave Order and Fluctuations above TCDW and below Superconducting Tc in the Kagome Metal CsV3Sb5. Physical Review Letters, 129(5): 056401, pp. 1-6. doi:10.1103/PhysRevLett.129.056401.


Cite as: https://hdl.handle.net/21.11116/0000-000A-E360-9
Abstract
The phase diagram of the kagome metal family AV(3)Sb(5) (A = K, Rb, Cs) features both super-conductivity and charge density wave (CDW) instabilities, which have generated tremendous recent attention. Nonetheless, significant questions remain. In particular, the temperature evolution and demise of the CDW state has not been extensively studied, and little is known about the coexistence of the CDW with superconductivity at low temperatures. We report an x-ray scattering study of CsV3Sb5 over a broad range of temperatures from 300 to similar to 2 K, below the onset of its superconductivity at T-c similar to 2.9 K. Order parameter measurements of the 2 x 2 x 2 CDW structure show an unusual and extended linear temperature dependence onsetting at T* similar to 160 K, much higher than the susceptibility anomaly associated with CDW order at T-CDW = 94 K. This implies strong CDW fluctuations exist to similar to 1.7 x T-CDW. The CDW order parameter is observed to be constant from T = 16 to 2 K, implying that the CDW and superconducting order coexist below T-c, and, at ambient pressure, any possible competition between the two order parameters is manifested at temperatures well below T-c, if at all. Anomalies in the temperature dependence in the lattice parameters coincide with T(CDW )for c(T) and with T* for a(T).