S-wave/spin-triplet order in superconductors without inversion symmetry: Li2Pd3B and Li2Pt3B
H. Q. Yuan, D. F. Agterberg, N. Hayashi, P. Badica, D. Vandervelde, K. Togano, M. Sigrist, M. B. Salamon
Abstract
We investigate the order parameter of noncentrosymmetric superconductors Li2Pd3B and Li2Pt3B via the behavior of the penetration depth λ(T). The low-temperature penetration depth shows BCS-like behavior in Li2Pd3B, while in Li2Pt3B it follows a linear temperature dependence. We propose that broken inversion symmetry and the accompanying antisymmetric spin-orbit coupling, which admix spin-singlet and spin-triplet pairing, are responsible for this behavior. The triplet contribution is weak in Li2Pd3B, leading to a wholly open but anisotropic gap. The significantly larger spin-orbit coupling in Li2Pt3B allows the spin-triplet component to be larger in Li2Pt3B, producing line nodes in the energy gap as evidenced by the linear temperature dependence of λ(T). The experimental data are in quantitative agreement with theory.
Create a lesson
Related papers
Altermagnetic Control of Charge-4e Superconductivity
Yan-Guang Yue, Jie Lou, Yan Chen
Electron- and hole-doped superconductivity in two-dimensional electride ZrX2 (X = Cl, Br, I)
Tian-Xin Liu, Xin-Yang Li, Zuo-Wei Yin et al.
Enhanced Coulomb pseudopotentials in high-pressure hydrides from first principles
Kieran Bozier, Chris J. Pickard
Pressure-induced double-dome superconductivity in doped kagome metal Cs(V0.86Ta0.14)3Sb5 without charge density wave
Haochen Sun, Jing Wang, Deng Hu et al.
Electric and Heat Transport in One-Dimensional SNS Junctions with Energy-Dependent Transmission
Kai Tsutsumi, Shun Uchino
From band reconstruction to Bogoliubov dispersion: How dz2-band enhances iron-based superconductivity
Jingming Yan, Shendong Su, Guihao Jia et al.