Muon-spin rotation measurements of the penetration depth of the Mo&lt;sub&gt;3&lt;/sub&gt;Sb&lt;sub&gt;7&lt;/sub&gt; superconductor

Khasanov, R.; Klamut, P.W.; Shengelaya, A.; Bukowski, Z.; Savić, I.M.; Baines, C.; Keller, H.

doi:10.1103/PhysRevB.78.014502

Muon-spin rotation measurements of the penetration depth of the Mo₃Sb₇ superconductor

Khasanov R, Klamut PW, Shengelaya A, Bukowski Z, Savić IM, Baines C & Keller H

Citation

Khasanov, R., Klamut, P. W., Shengelaya, A., Bukowski, Z., Savić, I. M., Baines, C., & Keller, H. (2008). Muon-spin rotation measurements of the penetration depth of the Mo₃Sb₇ superconductor. Physical Review B, 78(1), 014502 (5 pp.). https://doi.org/10.1103/PhysRevB.78.014502

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:19026

Measurements of the magnetic-field penetration depth λ in superconductor Mo₃Sb₇ (T_c≃2.1 K) were carried out by means of muon-spin rotation. The absolute values of λ, the Ginzburg-Landau parameter κ, and the first H_c₁ and the second H_c₂ critical fields at T=0 are λ(0)=720(100) nm, κ(0)=55(10), μ₀H_c₁(0)=1.8(3) mT, and μ₀H_c2(0)=1.9(2) T. The zero-temperature value of the superconducting energy gap Δ(0) was found to be 0.35(1) meV, corresponding to the ratio 2Δ(0)/k_BT_c=3.83(10). At low temperatures λ⁻²(T) saturates and becomes constant below T≃0.3T_c, in agreement with what is expected for s-wave BCS superconductors. Our results suggest that Mo₃Sb₇ is a superconductor with the single isotropic energy gap.