Dirac quasiparticles and spin-lattice relaxation in the mixed state
Superconductivity
2007-05-23 v1
Abstract
We present the results of quantum-mechanical calculations, using the singular gauge transformation of Franz and Tesanovic, of the rate of planar Cu spin-lattice relaxation due to electron spin-flip scattering in the mixed state of high-Tc cuprate superconductors. The results show a non-monotonic 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 YBCO point to antiferromagnetic spin fluctuations as a better candidate for the elementary excitations of the superconducting state.
Keywords
Cite
@article{arxiv.cond-mat/0207439,
title = {Dirac quasiparticles and spin-lattice relaxation in the mixed state},
author = {Daniel Knapp and Catherine Kallin and A. John Berlinsky and Rachel Wortis},
journal= {arXiv preprint arXiv:cond-mat/0207439},
year = {2007}
}
Comments
5 pages, 6 figures, 2 column RevTex4 PRB format