SO(5) superconductor in a Zeeman magnetic field: Phase diagram and thermodynamic properties

Details SO(5) superconductor in a Zeeman magnetic field: Phase diagram and thermodynamic properties SO(5) superconductor in a Zeeman magnetic field: Phase diagram and thermodynamic properties

2002-11-15

arxiv.org/abs/cond-mat/0211319v1

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures, to appear in Phys. Rev. B, see http://prb.aps.org

Scientific paper

10.1103/PhysRevB.66.212504

In this paper we present calculations of the SO(5) quantum rotor theory of high-T$_{c}$ superconductivity in Zeeman magnetic field. We use the spherical approach for five-component quantum rotors in three-dimensional lattice to obtain formulas for critical lines, free energy, entropy and specific heat and present temperature dependences of these quantities for different values of magnetic field. Our results are in qualitative agreement with relevant experiments on high-T$_{c}$ cuprates.

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