Superconductivity in noncentrosymmetric YPtBi under pressure

T. V. Bay; T. Naka; Y. K. Huang; A. de Visser

doi:10.1103/PhysRevB.86.064515

← Back to search

Superconductivity in noncentrosymmetric YPtBi under pressure

T. V. Bay, T. Naka, Y. K. Huang, A. de Visser

DOI 10.1103/PhysRevB.86.064515 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We report a high-pressure single-crystal study of the noncentrosymmetric superconductor YPtBi (Tc=0.77 K). Magnetotransport measurements show a weak metallic behavior with a carrier concentration n≃2.2×1019 cm−3. Resistivity measurements up to p=2.51 GPa reveal superconductivity is promoted by pressure. The reduced upper critical field Bc2(T) curves collapse onto a single curve, with values that exceed the model values for spin-singlet superconductivity. The Bc2 data point to an odd-parity component in the superconducting order parameter, in accordance with predictions for noncentrosymmetric superconductors.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YPtBi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.77	Pressure unresolved	zero_resistance
YPtBi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.77	Pressure unresolved	onset
YPtBi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.77	0.25 GPa	midpoint
YPtBi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.79	0.68 GPa	midpoint
YPtBi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.82	1.36 GPa	midpoint
YPtBi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.85	2.03 GPa	midpoint
YPtBi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.88	2.51 GPa	midpoint
CePt3Si Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.75	Pressure not reported	unknown
CeRhSi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.1	Pressure not reported	unknown
CeIrSi3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.6	Pressure not reported	unknown
Li2Pt3B Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	2.6	Pressure not reported	unknown
Mo3Al2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	9.2	Pressure not reported	unknown
LaPtBi Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.9	Pressure not reported	unknown