Locking of length scales in two-band superconductors

Ichioka, M.; Kogan, Vladimir G.; Schmalian, J.

doi:10.1103/PhysRevB.95.064512

Title: Locking of length scales in two-band superconductors

Journal Article · Tue Feb 21 00:00:00 EST 2017 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.95.064512· OSTI ID:1355899

Ichioka, M. ^[1]; Kogan, Vladimir G. ^[2]; Schmalian, J. ^[3]

Okayama Univ., Okayama (Japan)
Ames Lab. and Iowa State Univ., Ames, IA (United States)
Karlsruher Institut fur Technologie, Karlsruhe (Germany)

Here, a model of a clean two-band s-wave superconductor with cylindrical Fermi surfaces, different Fermi velocities v_1,2, and a general 2×2 coupling matrix V_αβ is used to study the order parameter distribution in vortex lattices. The Eilenberger weak coupling formalism is used to calculate numerically the spatial distributions of the pairing amplitudes Δ₁ and Δ₂ of the two bands for vortices parallel to the Fermi cylinders. For generic values of the interband coupling V₁₂, it is shown that, independently of the couplings V_αβ, of the ratio v₁/v₂, of the temperature, and the applied field, the length scales of spatial variation of Δ₁ and of Δ₂ are the same within the accuracy of our calculations. The only exception from this single length-scale behavior is found for V₁₂ << V₁₁, i.e., for nearly decoupled bands.

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Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-07CH11358

OSTI ID:: 1355899

Alternate ID(s):: OSTI ID: 1344591

Report Number(s):: IS-J-9320; PRBMDO; TRN: US1702608

Journal Information:: Physical Review B, Vol. 95, Issue 6; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 12 works

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Variation of zero-energy density of states of a $d$ -wave superconductor in a rotating in-plane magnetic field: Effect of nonmagnetic impurities Hashitani, Yuuki; Tanaka, Kenta K.; Adachi, Hiroto Physical Review B, Vol. 101, Issue 6 https://doi.org/10.1103/physrevb.101.060501	journal	February 2020
Relation of Superconducting Pairing Symmetry and Non-Magnetic Impurity Effects in Vortex States Sera, Yasuaki; Ueda, Takahiro; Adachi, Hiroto Symmetry, Vol. 12, Issue 1 https://doi.org/10.3390/sym12010175	journal	January 2020

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