Pressure-induced superconductivity in kagome single crystal Pd3P2S8

Abstract

Kagome lattice offers unique opportunities for the exploration of unusual quantum states of correlated electrons. Here, we report on the observation of superconductivity in a kagome single crystal Pd3P2S8 when a semiconducting to metallic transition is driven by pressure. High-pressure resistance measurements show that the metallization and superconductivity are simultaneously observed at about 11 GPa. With increasing pressure, the superconducting critical temperature Tc is monotonously enhanced from 2.6 K to a maximum 7.7 K at ~52 GPa. Interestingly, superconductivity retains when the pressure is fully released. Synchrotron XRD and Raman experiments consistently evidence that the emergence of superconductivity is accompanied with an amorphization and the retainability of superconductivity upon decompression can be attributed to the irreversibility of the amorphization.

References in corpus (7)

• CsV${}_3$Sb${}_5$: a ${\mathbb{Z}}_2$ topological kagome metal with a superconducting ground state
• Cascade of correlated electron states in a kagome superconductor CsV3Sb5
• Theoretical prediction of a strongly correlated Dirac metal
• Emergence of new van Hove singularities in the charge density wave state of a topological kagome metal RbV3Sb5
• Optical Spectral Weight, Phase Stiffness and Tc Bounds for Trivial and Topological Flat Band Superconductors
• Wide applicability of high $T_c$ pairing originating from coexisting wide and incipient narrow bands in quasi one dimension
• Evolution of ultra-flat band in van der Waals kagome semiconductor Pd3P2(S1-xSex)8

Cited by in corpus (1)

• Pressure-induced concurrent amorphization and superconductivity in topological material NbNiTe5