Dirac quasiparticles and spin-lattice relaxation in the mixed state

Article

关键词: D-WAVE;    VORTEX LATTICE;    ELECTRONIC-STRUCTURE;    FIELD-DEPENDENCE;    SUPERCONDUCTORS;    LINE;    NMR;   

DOI  :  10.1103/PhysRevB.66.144508

来源: SCIE

【 摘 要 】

We present the results of quantum-mechanical calculations, using the singular gauge transformation of Franz and Tesanovic [Phys. Rev. Lett. 80, 4763 (1998)], of the rate of planar Cu spin-lattice relaxation due to electron spin-flip scattering in the mixed state of high-T-c cuprate superconductors. The results show a nonmonotonic temperature and frequency dependence that differs markedly from semiclassical Doppler-shifted results, and challenges the assertion that recent experimental observations of the rate of planar Cu and O spin-lattice relaxation in the mixed state of YBa2Cu3O7-delta point to antiferromagnetic spin fluctuations as a better candidate for the elementary excitations of the superconducting state.

【 授权许可】

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