Bulk electronic state of superconducting topological insulator

Abstract

We study electronic properties of a superconducting topological insulator whose parent material is a topological insulator. We calculate the temperature dependence of the specific heat and spin susceptibility for four promising superconducting pairings proposed by L. Fu and E. Berg (Phys. Rev. Lett. 105, 097001). Since the line shapes of temperature dependence of specific heat are almost identical among three of the four pairings, it is difficult to identify them simply from the specific heat. On the other hand, we obtain wide varieties of the temperature dependence of spin susceptibility for each pairing reflecting the spin structure of Cooper pair. We propose that the pairing symmetry of superconducting topological insulator can be determined from measurement of Knight shift by changing the direction of applied magnetic field.

12 pages, 15 figures. Accepted for publication in J. Phys. Soc. Jpn

References in corpus (17)

• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
• Classification of topological insulators and superconductors in three spatial dimensions
• Non-Abelian Topological Order in S-Wave Superfluids of Ultracold Fermionic Atoms
• Electrically detected interferometry of Majorana fermions in a topological insulator
• Topological Phases of Noncentrosymmetric Superconductors: Edge States, Majorana Fermions, and the Non-Abelian Statistics
• Bulk superconducting phase with a full energy gap in the doped topological insulator Cu_xBi_2Se_3
• Non-Abelian Topological Orders and Majorana Fermions in Spin-Singlet Superconductors
• Search for Majorana fermions in multiband semiconducting nanowires
• Topological spin-current in non-centrosymmetric superconductors
• Topological properties of spin-triplet superconductors and the Fermi surface topology in the normal state
• Electrochemical synthesis and superconducting phase diagram of Cu_xBi2Se3
• Majorana Fermions in Nodal Superconductors: Gapless Topological Phase
• Surface spectral function in the superconducting state of a topological insulator
• Rotational Isotropy Breaking as Proof for Spin-polarized Cooper Pairs in the Topological Superconductor CuxBi2Se3
• Anomalous suppression of the superfluid density in the CuxBi2Se3 superconductor upon progressive Cu intercalation
• Zero energy bound states in tunneling conductance spectra at the interface of an s-wave superconductor and a topological insulator in NbN-$B{i}_{2}S{e}_3$-Au thin film junctions

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• Unusual nature of fully-gapped superconductivity in In-doped SnTe
• Nematic superconductivity in doped Bi2Se3 topological superconductors
• Topological Phase Transition without Gap Closing
• Vestigial nematic order and superconductivity in the doped topological insulator Cu${}_x$Bi${}_2$Se${}_3$
• Superconductivity in doped Dirac semimetals
• Identification of nematic superconductivity from the upper critical field
• Dirac-Fermion-Induced Parity Mixing in Superconducting Topological Insulators
• Spin-orbit-parity coupled superconductivity in topological monolayer WTe${}_2$
• Topological phase transitions in multi-component superconductors
• Spin-triplet superconductivity from interband effect in doped insulators
• Superconducting doped topological materials
• Nematic and chiral superconductivity induced by odd-parity fluctuations
• Surface electronic state of superconducting topological crystalline insulator
• Non-fragile superconductivity with nodes in the superconducting topological insulator CuxBi2Se3: Zeeman orbital field and non-magnetic impurities
• Chiral Higgs Mode in Nematic Superconductors
• Quasi-classical theory of tunneling spectroscopy in superconducting topological insulator
• Robustness of unconventional $s$-wave superconducting states against disorder
• Quantum thermal Hall effect of Majorana fermions on the surface of superconducting topoloigcal insulators
• Quasiclassical Treatment and Odd-parity/Triplet Correspondence in Topological Superconductors
• Effect of Fermi surface evolution on superconducting gap in superconducting topological insulator
• Novel anisotropic spin singlet pairings in Cu${}_x$Bi${}_2$Se${}_3$ and Bi${}_2$Te${}_3$
• Chiral Superconductivity in Thin Films of doped Bi${}_2$Se${}_3$
• Majorana Kramers pair in a nematic vortex
• Surface states and local spin susceptibility in doped three-dimensional topological insulators with odd-parity superconducting pairing symmetry
• Dominant $s$-wave superconducting gap in PdTe${}_2$ observed by tunneling spectroscopy on side-junctions
• Nematic superconductivity in Cu${}_x$Bi${}_2$Se${}_3$: The surface Andreev bound states
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• Field-angle-dependent low-energy excitations around a vortex in the superconducting topological insulator CuxBi2Se3
• Spin susceptibility for orbital-singlet Cooper pair in the three-dimensional Sr${}_2$RuO${}_4$ superconductor
• Effective low energy theory for surface Andreev bound states of superconducting phases in generalized Bernevig-Hughes-Zhang models
• Superconductivity in Cu-doped Bi${}_2$Se${}_3$ with potential disorder
• Nuclear magnetic relaxation rates of unconventional superconductivity in doped topological insulators
• Odd-frequency pairs and anomalous proximity effect in nematic and chiral states of superconducting topological insulators
• Possible two-component pairings in electron-doped Bi${}_2$Se${}_3$ based on a tight-binding model
• Theory of low-energy behaviors in topological $s$-wave pairing superconductors