Charge-density-wave superconductor Bi2Rh3Se2

Takeshi Sakamoto; Makoto Wakeshima; Yukio Hinatsu; Kazuyuki Matsuhira

doi:10.1103/PhysRevB.75.060503

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Charge-density-wave superconductor Bi2Rh3Se2

Takeshi Sakamoto, Makoto Wakeshima, Yukio Hinatsu, Kazuyuki Matsuhira

DOI 10.1103/PhysRevB.75.060503 · Physical Review B

T1

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Abstract

We discovered a superconducting transition with the charge-density-wave state in a ternary compound Bi2Rh3Se2. This compound crystallizes in the parkerite-type structure composed of sheets containing one-dimensional Rh-Rh chains. The electrical resistivity, magnetic susceptibility, thermoelectric power, sample length change, and x-ray diffraction measurements reveal that this compound is in the CDW state below 240K. Furthermore, the specific heat and electrical resistivity measurements show a superconducting transition at ∼0.7K. The various superconducting parameters were determined, and the GL parameter κ(0) shows the considerably large value of 151 indicating an extreme type-II superconductor.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Rh3Se2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.84	Pressure not reported	midpoint
Bi2Rh3Se2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.66	Pressure not reported	midpoint