Multigap superconductivity in the charge density wave superconductor LaPt2Si2
Debarchan Das, Ritu Gupta, A. Bhattacharyya, P. K. Biswas, D. T. Adroja, Z. Hossain
DOI 10.1103/PhysRevB.97.184509 · Physical Review B
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
The superconducting gap structure of a charge density wave (CDW) superconductor LaPt2Si2(Tc=1.6 K) having a quasi-two-dimensional crystal structure has been investigated using muon spin rotation/relaxation (μSR) measurements in transverse field (TF), zero field (ZF), and longitudinal field (LF) geometries. Rigorous analysis of TF-μSR spectra in the superconducting state corroborates that the temperature dependence of the effective penetration depth, λL, derived from muon spin depolarization, fits to a two gap s wave model (i.e., s+s wave) suggesting that the Fermi surface contains two gaps of different magnitude rather than an isotropic gap expected for a conventional s wave superconductor. On the other hand, ZF μSR data do not show any significant change in muon spin relaxation rate above and below the superconducting transition temperature indicating the fact that time-reversal symmetry is preserved in the superconducting state of this material.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| LaPt2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.6 | Pressure not reported | unknown |
| LaPt2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.6 | Pressure not reported | unknown |
Similar papers
Interplay between charge density wave and superconductivity in multiband systems with interband Coulomb interaction
similarity 0.95Nei Lopes et al.
Source status unknown — claims are unverified
Evolution of charge density wave order and superconductivity under pressure in LaPt2Si2
similarity 0.95B. Shen et al.
Source status unknown — claims are unverified
Nodeless superconductivity in the charge density wave superconductor LaPt2Si2
similarity 0.94Z. Y. Nie et al.
Source status unknown — claims are unverified
Topological states in the noncentrosymmetric superconductors LaPtSi and LaPtGe
similarity 0.92Xianbiao Shi et al.
Source status unknown — claims are unverified
Multigap Superconductivity in a charge density wave superconductor LaPt2Si2
similarity 0.92Debarchan Das et al. · 2018 · arXiv:1802.10414
Source status unknown — claims are unverified
Superconductivity and magnetism in noncentrosymmetric LaPtGe3 and CePtGe3
similarity 0.91Manuel Feig et al.
Source status unknown — claims are unverified