Nuclear Spin Relaxation Time Due to the Orbital Currents in Dirac Electron Systems

Nuclear spin relaxation of Xe due to persistent xenon dimers

We have measured longitudinal nuclear relaxation rates of Xe in Xe-N2 mixtures at densities below 0.5 amagats in a magnetic field of 8.0 T. We find that intrinsic spin relaxation in this regime is principally due to fluctuations in the intramolecular spin-rotation SR and chemical-shift-anisotropy CSA interactions, mediated by the formation of Xe-Xe persistent dimers. Our results are consistent ...

Spin relaxation in n-doped gallium arsenide due to impurity and electron-electron Elliot-Yafet scattering

We calculate the spin relaxation time of conduction electrons in n-doped bulk gallium arsenide. We consider the Elliot-Yafet spin-relaxation mechanism, driven by Coulombic-impurity and electron-electron scattering. We find that these two scattering mechanisms result in relaxation times of equal order of magnitude, but with disimilar dependences on doping density and temperature. Our theoretical...

Probing the Nuclear Spin-Lattice Relaxation Time at the Nanoscale

J. J. T. Wagenaar, A. M. J. den Haan, J. M. de Voogd, L. Bossoni, T. A. de Jong, M. de Wit, K. M. Bastiaans, D. J. Thoen, A. Endo, T. M. Klapwijk, J. Zaanen, and T. H. Oosterkamp Kamerlingh Onnes Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, The Netherlands Kavli Institute of Nanoscience, Faculty of Applied Sciences, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, T...

Slow Spin Relaxation in Two-Dimensional Electron Systems with Antidots

Nuclear magnetic resonance and spin relaxation in biological systems.

Proton nuclear spin-lattice relaxation in biological systems is generally distinguished from that in inorganic systems such as rocks by the presence of locally disordered macromolecular environments. Rapid exchange of readily observed labile small molecules among differently oriented macromolecular sites generally nearly averages the spectral anisotropies in the small molecule resonances. The b...