Type-I and type-II superconductivity in the noncentrosymmetric compound Ir2Ga9

J. C. Jiao; K. W. Chen; O. O. Bernal; P.-C. Ho; Lei Shu

doi:10.1103/PhysRevB.110.064506

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Type-I and type-II superconductivity in the noncentrosymmetric compound Ir2Ga9

J. C. Jiao, K. W. Chen, O. O. Bernal, P.-C. Ho, Lei Shu

DOI 10.1103/PhysRevB.110.064506 · Physical Review B

T1

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Abstract

We have performed magnetization, specific heat, and muon spin relaxation (μSR) measurements on single crystals of the noncentrosymmetric superconductor Ir2Ga9. The isothermal magnetization measurements show that there is a crossover from type-I to type-II superconductivity with decreasing temperature. Potential multiband superconductivity of Ir2Ga9 is observed in the specific heat data. μSR measurement is performed to map the phase diagram of Ir2Ga9, and both type-I and type-II superconductivity characteristics are obtained. Most importantly, a more unique region with the coexistence of type-I and type-II μSR signals is observed. In addition, time reversal symmetry is found to be preserved in Ir2Ga9 by zero field μSR measurement.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Ir2Ga9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	2.25	Pressure not reported	unknown
Ir2Ga9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	2.16	Pressure not reported	onset
Ir2Ga9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	2.25	Pressure not reported	unknown
MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
ZrB12 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
NbGe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
LaRhSi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown