Spin-lattice relaxation in the mixed state of the high-$T_c$ cuprates: electronic spin-flip scattering versus spin-fluctuations

Abstract

Recent experimental and theoretical studies have established that the spin-lattice relaxation rate, $1/T_1$, measured in nuclear magnetic resonance (NMR) experiments is a site-sensitive probe for the electronic spectrum in the mixed state of the high-$T_c$ cuprates. While some groups suggested that $1/T_1$ is solely determined by spin-flip scattering of BCS-like electrons, other groups stressed the importance of antiferromagnetic spin-fluctuations. We show that these two relaxation mechanisms give rise to a {\it qualitatively} different temperature and frequency dependence of ${}^{17}$O $1/T_1$. A comparison of our results with the experimental ${}^{17}$O $1/T_1$ data provides support for a relaxation mechanism dominated by antiferromagnetic spin-fluctuations.

6 pages, 5 figures

References in corpus (4)

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

Cited by in corpus (5)

• Antiferromagnetic Vortex Core of Tl_2Ba_2CuO_{6+x} Studied by Nuclear Magnetic Resonance
• Nuclear magnetic resonance in the heavy fermion superconductors
• Quasiparticle excitation in and around the vortex core of underdoped YBa_2Cu_4O_8 studied by site-selective NMR
• Dirac quasiparticles and spin-lattice relaxation in the mixed state
• Calculated NMR T_2 relaxation due to vortex vibrations in cuprate superconductors