TEMPERATURE AND DOPING DEPENDENCE OF THE QUASI-PARTICLE SPECTRUM FOR HOLES IN THE SPIN-POLARON MODEL OF COPPER OXIDES

Article

关键词: T-J MODEL;    QUANTUM ANTIFERROMAGNET;    EXACT-DIAGONALIZATION;    SUPERCONDUCTORS;    DYNAMICS;    MOTION;    STATE;   

DOI  :  10.1103/PhysRevB.50.6431

来源: SCIE

【 摘 要 】

The spectral function and the momentum distribution for holes in an antiferromagnet are calculated on the basis of the t-J model in a slave-fermion representation. The self-consistent Born approximation for the two-time Green's function is used to study the temperature and doping (delta) dependence of the self-energy operator. The numerical calculations show a weak concentration and temperature dependence of the spectral function (quasiparticle hole spectrum) while the momentum distribution function changes dramatically with increasing temperature for T > T(d) with T(d) congruent-to Jdelta.

【 授权许可】

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