NMR relaxation time in a clean two-band superconductor

Spatially resolved NMR relaxation rate in a noncentrosymmetric superconductor

We numerically study the spatially-resolved NMR around a single vortex in a noncentrosymmetric superconductor such as CePt3Si. The nuclear spin-lattice relaxation rate T −1 1 under the influence of the vortex core states is calculated for an s+ p-wave Cooper pairing state. The result is compared with that for an s-wave pairing state.

FeTe0.55Se0.45: A multiband superconductor in the clean and dirty limit

The detailed optical properties of the multiband iron-chalcogenide superconductor FeTe0.55Se0.45 have been reexamined for a large number of temperatures above and below the critical temperature Tc = 14 K for light polarized in the a-b planes. Instead of the simple Drude model that assumes a single band, above Tc the normal-state optical properties are best described by the two-Drude model that ...

Surface relaxation and chemical exchange in hydrating cement pastes: a two-dimensional NMR relaxation study.

We report the first nuclear magnetic resonance (NMR) two-dimensional correlation T(1) - T(2) and T(2) - T(2) measurements of hydrating cement pastes. A small but distinct cross peak in the two-dimensional relaxation spectrum provides the first direct evidence of chemical exchange of water between gel and capillary pores occurring over the first 14 days of hydration. A correlation of features al...

Interference effects on the critical current in a clean-limit superconductor-normal-metal-superconductor junction.

NMR Relaxation

Longitudinal and transverse I5N NMR relaxation times in human ubiquitin have been measured at 600MHz 'H frequency with a reproducibility of better than 1%. Two independent measurements of the 15N-{'H} NOE indicate a random error of ca. 0.01, and no values were larger than the theoretical maximum. The relaxation data are incompatible with isotropic rotational diffusion but agree well with an axi...