Charge Density Wave Orders and Enhanced Superconductivity under Pressure in the Kagome Metal CsV3Sb5
Source abstract
Abstract
Abstract Superconductivity in topological kagome metals has recently received great research interests. Here, charge density wave (CDW) orders and the evolution of superconductivity under various pressures in CsV3Sb5 single crystal with V kagome lattice are investigated. By using high‐resolution scanning tunneling microscopy/spectroscopy (STM/STS), two CDW orders in CsV3Sb5 are observed which correspond to 4a × 1a and 2a × 2a superlattices. By applying pressure, the superconducting transition temperature Tc is significantly enhanced and reaches a maximum value of 8.2 K at around 1 GPa. Accordingly, CDW state is gradually declined as increasing the pressure, which indicates the competing interplay between CDW and superconducting state in this material. The broad superconducting transitions around 0.4–0.8 GPa can be related to the strong competition relation among two CDW states and superconductivity. These results demonstrate that CsV3Sb5 is a new platform for exploring the interplay between superconductivity and CDW in topological kagome metals.
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Research context
OpenAlex topics: Topological Materials and Phenomena · Advanced Condensed Matter Physics · Electronic and Structural Properties of Oxides
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Physical Science and Technology ShanghaiTech University Shanghai 201210 China
ShanghaiTech Laboratory for Topological Physics ShanghaiTech University Shanghai 201210 China
Center for Transformative Science ShanghaiTech University Shanghai 201210 China
Shanghai High Repetition Rate XFEL and Extreme Light Facility (SHINE) ShanghaiTech University Shanghai 201210 China
Department of Physics and Beijing Key Laboratory of Opto‐electronic Functional Materials and Micro‐nano Devices Renmin University of China Beijing 100872 China
Department of Physics Clarendon Laboratory University of Oxford Parks Road Oxford OX1 3PU UK
Funding
National Natural Science Foundation of China · Natural Science Foundation of Shanghai · Science and Technology Commission of Shanghai Municipality · China Postdoctoral Science Foundation
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