Nodeless superconducting gap in the candidate topological superconductor Sn${}_{1-x}$In${}_x$Te for x = 0.7

Abstract

High-pressure synthesis techniques have allowed for the growth of Sn${}_{1-x}$In${}_x$Te samples beyond the ambient In-saturation limit of $x$ = 0.5 (T${}_c\sim$ 4.5 K). In this study, we present measurements of the temperature dependence of the London penetration depth $\Delta \lambda (T)$ in this superconducting doped topological insulator for $x$ = 0.7, where T${}_{c,onset}\approx 5$ K. The results indicate fully gapped BCS-like behavior, ruling out odd-parity $A_{2u}$ pairing; however, odd-parity $A_{1u}$ pairing is still possible. Critical field values measured below 1 K and other superconducting parameters are also presented.

arXiv comment5 pages, 6 figures

References in corpus (33)

• Topological Insulators
• Non-Abelian Anyons and Topological Quantum Computation
• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Topological Insulator Materials
• Topological Crystalline Insulators in the SnTe Material Class
• Experimental realization of a topological crystalline insulator in SnTe
• Odd-Parity Topological Superconductors: Theory and Application to Cu${}_x$Bi${}_2$Se${}_3$
• Evidence for Majorana bound state in an iron-based superconductor
• Milestones toward Majorana-based quantum computing
• Chiral Majorana edge state in a quantum anomalous Hall insulator-superconductor structure
• Magnetic Penetration Depth in Unconventional Superconductors
• Zero-energy vortex bound state in the superconducting topological surface state of Fe(Se,Te)
• Topological Superconductor Bi2Te3/NbSe2 heterostructures
• Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor
• Odd-parity topological superconductor with nematic order: Application to CuxBi2Se3
• Robust and clean Majorana zero mode in the vortex core of high-temperature superconductor (Li0.84Fe0.16)OHFeSe
• Odd-Parity Pairing and Topological Superconductivity in a Strongly Spin-Orbit Coupled Semiconductor
• Exponential Temperature Dependence of Penetration Depth in Single Crystal MgB_2
• Penetration depth study of superconducting gap structure of 2\textit{H}-NbSe${}_2$
• Enhanced superconducting pairing interaction in indium-doped tin telluride
• Theory of interacting topological crystalline insulators
• Nematic superconductivity in doped Bi2Se3 topological superconductors
• Fermiology of Strongly Spin-Orbit Coupled Superconductor Sn1-xInxTe and its Implication to Topological Superconductivity
• Optimizing the superconducting transition temperature and upper critical field of Sn(1-x)In(x)Te
• Superconducting properties of the In substituted Topological Crystalline Insulator, SnTe
• Identification of nematic superconductivity from the upper critical field
• Evidence of nodes in the order parameter of the superconducting doped topological insulator Nb${}_x$Bi${}_2$Se${}_3$ via penetration depth measurements
• Resonance-state-induced superconductivity at high Indium contents in In-doped SnTe
• Superconductivity induced by In substitution into the topological crystalline insulator Pb(0.5)Sn(0.5)Te
• Observation of surface states on heavily indium doped SnTe(111), a superconducting topological crystalline insulator
• High-Pressure Synthesis and Superconductivity of Ag-doped Topological Crystalline Insulator SnTe (Sn1-xAgxTe with x = 0-0.5)
• Superconductivity, pairing symmetry, and disorder in the doped topological insulator Sn${}_{1-x}$In${}_x$Te for x $\ge$ 0.10
• Electron and hole contributions to normal-state transport in the superconducting system Sn${}_{1-x}$In${}_x$Te

Cited by in corpus (4)

• A comprehensive review on topological superconducting materials and interfaces
• Observation of coexisting weak localization and superconducting fluctuations in strained Sn1-xInxTe thin films
• Full superconducting gap in the candidate topological superconductor In${}_{1-x}$Pb${}_x$Te for x = 0.2
• Unconventional superconductivity from electronic dipole fluctuations