Methods are described and demonstrated for detecting the coherent evolution of nuclear spin observables in zero magnetic field with the full sensitivity of high field NMR. The principle motivation is to provide a means of obtaining solid state spectra of the magnetic dipole and electric quadrupole interactions of disordered systems without the line broadening associated with random orientation ...

A computational study at the level density functional theory (DFT) was carried out to investigate the influences of Si and C-doping on the N and Al quadrupole coupling constant in the (10, 0) zigzag single – walled Aluminum-Nitride nanotube (AlNNT). To this aim, a 1.16nm, length of AlNNT consisting of 40 Al atoms and 40 N atoms were selected where the end atoms are capped by hydrogen atom. To f...

We study the effect of thermal fluctuations of the s-wave order parameter of a quasi two dimensional superconductor on the nuclear spin relaxation rate near the transition temperature TC . We consider both the effects of the amplitude fluctuations and the Berezinskii-Kosterlitz-Thouless (BKT) phase fluctuations in weakly coupled layered superconductors. In the treatment of the amplitude fluctua...

Direct NQR signals from the light nuclei H, B, N use to be weak; their detection is difficult. For these light nuclei nuclear quadrupole double resonance (DNQR) methods are preferable in which the sensitivity is enhanced due to the thermal contact of two spin-systems and indirect detection. The higher the initial magnetic field B0, the better is the DNQR sensitivity. Apart from this, the DNQR s...