We compute the relaxation rate of spin density heavy quarks in a perturbative QCD plasma to leading-log order coupling constant $g$. The $\Gamma_s$ hydrodynamics is shown be $\Gamma_s\sim g^4\log(1/g)T (T/M)^2$ heavy-quark limit $T/M\ll 1$, which smaller than other non-hydrodynamic modes by additional powers $T/M$. demonstrate three different methods evaluate rate: 1) Green-Kubo formula hydrody...

Longitudinal-field muon spin relaxation experiments have been carried out in the paramagnetic state of singlecrystal Gd2Ti2O7 just above the phase transition at Tm = 1.0 K. At high applied fields the exponential relaxation time T1 is proportional to field, whereas T1 saturates below a crossover field Bc that is ∼2.5 T at 1.5 K and decreases as Tm is approached. At low fields the relaxation rate...

A model-free theoretical framework for phenomenological description of spinlattice relaxation by anomalous translational diffusion in inhomogeneous systems based on the fractional diffusion equation is developed. The dependence of the spin-lattice relaxation time on the size of the pores in porous glass Vycor is experimentally obtained and found to agree well with theoretical predictions. We ob...

Experiments on a nearly spin degenerate two-dimensional electron system reveals unusual hysteretic and relaxational transport in the fractional quantum Hall effect regime. The transition between the spin-polarized (with fill fraction nu = 1/3) and spin-unpolarized (nu = 2/5) states is accompanied by a complicated series of hysteresis loops reminiscent of a classical ferromagnet. In correlation ...

Time-resolved optical measurements in (110)-oriented GaAs/AlGaAs quantum wells show a tenfold increase of the spin-relaxation rate as a function of applied electric field from 20 to 80 kV cm(-1) at 170 K and indicate a similar variation at 300 K, in agreement with calculations based on the Rashba effect. Spin relaxation is almost field independent below 20 kV cm(-1) reflecting quantum well inte...

2014 We have investigated the spin-lattice relaxation of localized states in evaporated amorphous silicon films. Temperature and concentration dependences of the relaxation rate have been measured in the temperature range 4.2-290 K. Below 10 K a phonon bottleneck is present. Between 10 and 100 K, a single phonon process predominates. It can be accounted for assuming a significant exchange inter...

We report the generation and observation of long-lived spin states in deuterated methyl groups by dissolution DNP. These states are based on population imbalances between manifolds of spin states corresponding to irreducible representations of the C3v point group and feature strongly dampened quadrupolar relaxation. Their lifetime depends on the activation energies of methyl group rotation. Wit...

Magnetic susceptibility, NMR, muon spin relaxation, and inelastic neutron scattering measurements show that kapellasite, Cu3Zn(OH)6Cl2, a geometrically frustrated spin-1/2 kagome antiferromagnet polymorphic with herbertsmithite, is a gapless spin liquid showing unusual dynamic short-range correlations of noncoplanar cuboc2 type which persist down to 20 mK. The Hamiltonian is determined from a f...