Is the anisotropy of the upper critical field of Sr2RuO4 consistent with a helical p-wave state?

    Authors

    J. Phys.-Condes. Matter

    Comments

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    Abbreviated Journal Title

    Appl. Cogn. Psychol.

    Keywords

    superconductivity; triplet pairing; helical p-wave states; upper; critical field; strontium ruthenate; O-17 KNIGHT-SHIFT; MAGNETIC-FIELDS; SUPERCONDUCTIVITY; TEMPERATURE; LIQUID-HE-3; PHASE; LIMIT; HE-3; Physics, Condensed Matter

    Abstract

    We calculate the angular and temperature T dependencies of the upper critical field H-c2(theta, phi, T) for the C-4v point group helical p-wave states, assuming a single uniaxial ellipsoidal Fermi surface, Pauli limiting and strong spin-orbit coupling that locks the spin-triplet d-vectors onto the layers. Good fits to the Sr2RuO4 H-c2, a(theta, T) data of Kittaka et al (2009 Phys. Rev. B 80 174514) are obtained. Helical states with d(k)= k(x)x - k(y)y and k(y)x + k(x)y (or k(x)x + k(y)y and k(y)x - k(x)y) produce H-c2(90 degrees, phi, T) that greatly exceed (or do not exhibit) the fourfold azimuthal anisotropy magnitudes observed in Sr2RuO4.by Kittaka et al and by Mao et al (2000 Phys. Rev. Lett. 84 991), respectively.

    Subjects

    J. Zhang; C. Lorscher; Q. Gu;R. A. Klemm

    Volume

    26

    Issue/Number

    25

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    5

    WOS Identifier

    WOS:000337348900001

    ISSN

    0953-8984

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