Spectral flow in vortex dynamics of d-wave superconductors

Journal Article · Sat Nov 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.11872· OSTI ID:544942

Makhlin, Y G ^[1]

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1. Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801 (United States)

We calculate Ohmic and Hall flux-flow conductivities in the mixed state of clean d-wave superconductors taking into account the spectral flow along the anomalous branch of the states bound to vortex cores. Two parameters governing the strength of the spectral flow at low temperatures are found. They are determined by the ratios of the width of the localized levels 1/{tau} and (1) the interlevel spacing in the core, and (2) {Delta}{sub 0}{sup 2}/E{sub F}. These parameters determine three regimes of vortex dynamics. In the moderately clean limit the contribution of the spectral flow to the conductivities coincides with that for s superconductors. In the superclean regime in low magnetic fields both Ohmic and Hall conductivities acquire {tau}-independent universal values. The contribution of the spectral flow in the superclean regime is suppressed in higher fields. Unusual temperature and magnetic-field dependence of the conductivity tensor is discussed. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 544942
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 18 Vol. 56; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ELECTRIC CONDUCTIVITY
HALL EFFECT
MAGNETIC FLUX
MAGNETORESISTANCE
MIXED STATE
SUPERCONDUCTORS
TENSORS
VORTEX FLOW