Spin-lattice relaxation in the mixed state of YBaCuO: Can we see Doppler-shifted d-wave quasiparticles?

Abstract

We present calculations of the rate of planar Cu spin lattice relaxation in the mixed state of YBaCuO due to (i) vortex vibrations and (ii) electron spin-flip scattering. We emphasize that both mechanisms give position dependent rates due to the presence of vortices, and hence the magnetization recovery is characterized by a distribution of rates. We conclude that relaxation by vortex vibrations is too slow to be a significant factor in this material. Using a semiclassical model of Doppler shifted d-wave quasiparticles with a linear dispersion around the nodes, our calculation of the relaxation rate from electron spin-flip scattering shows partial agreement with experiment.

11 pages, 5 figures

References in corpus (6)

• Microwave Spectroscopy of Thermally Excited Quasiparticles in YBa_2Cu_3O_{6.99}
• Quasiparticle transport in the vortex state of YBa_2Cu_3O_6.9
• Quasiparticle thermal conductivity in the vortex state of high-T${}_c$ cuprates
• Low-Field Anomaly in the Specific Heat of s-wave Superconductors due to the Expansion of the Vortex Cores
• Theory of vortex excitation imaging via an NMR relaxation measurement
• Theory of NMR as a local probe for the electronic structure in the mixed state of the high-$T_c$ cuprates

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• Quasiparticle excitation in and around the vortex core of underdoped YBa_2Cu_4O_8 studied by site-selective NMR
• Thermodynamics of d-wave superconductors in a magnetic field
• Site-selective nuclear magnetic relaxation time in a superconducting vortex state
• Free flux flow resistivity in strongly overdoped high-T_c cuprate; purely viscous motion of the vortices in semiclassical d-wave superconductor
• Dirac quasiparticles in the mixed state
• Spin-lattice relaxation in the mixed state of the high-$T_c$ cuprates: electronic spin-flip scattering versus spin-fluctuations
• Dirac quasiparticles and spin-lattice relaxation in the mixed state
• Magnetic field dependence of spin-lattice relaxation in the s$\pm$ state of Ba${}_{0.67}$K${}_{0.33}$Fe${}_2$As${}_2$
• Calculated NMR T_2 relaxation due to vortex vibrations in cuprate superconductors
• Relaxation of Nuclear Magnetic Moments and Site-Selective NMR in d-Wave Superconductors