Silicon, the prominent material of microelectronics, is perfectly suited for spin-driven applications because of the weak spin-orbit interaction resulting in long spin lifetime. However, additional spin relaxation on rough interfaces and acoustic phonons may strongly decrease the spin lifetime in modern silicon-on-insulator and trigate transistors. Because of the need to perform numerical calcu...

First-principles calculations of the essential spin-orbit and spin relaxation properties of phosphorene are performed. Intrinsic spin-orbit coupling induces spin mixing with the probability of b2 ≈ 10−4, exhibiting a large anisotropy, following the anisotropic crystalline structure of phosphorene. For realistic values of the momentum relaxation times, the intrinsic (Elliott-Yafet) spin relaxati...

S. Michaeli, D. J. Sorce, S. Anderson, E. Hu, J. Lin, K. Ugurbil, M. Garwood, J. Frank Radiology, CMRR, University of Minnesota, Minneapolis, MN, United States, NHLBI, National Institutes of Health, Bethesda, MD, United States, LDRR, National Institutes of Health, Bethesda, MD, United States Introduction: Rotating frame transverse relaxation (T2ρ) is the dominant relaxation mechanism during an ...

MR phase images have shown significantly improved contrast between cortical gray and white matter regions compared to magnitude images obtained with gradient echo sequences. A variety of underlying biophysical mechanisms (including iron, blood, myelin content, macromolecular chemical exchange, and fiber orientation) have been suggested to account for this observation but assessing the individua...

We report Cu and La nuclear magnetic resonance measurements in the title compound that reveal an inhomogeneous glassy behavior of the spin dynamics. A low temperature peak in the La spin lattice relaxation rate and the "wipeout" of Cu intensity both arise from these slow electronic spin fluctuations that reveal a distribution of activation energies. Inhomogeneous slowing of spin fluctuations ap...

Cu ions doped to ZnGeF6 · 6H2O substitute the host Zn ions and undergo a strong Jahn–Teller effect producing nearly axial elongation of the Cu(H2O)6 octahedra with equal population of the three possible deformations at low temperatures as shown by the EPR spectra. Reorientations between these distorted configurations are observed as a continuous shift of EPR lines leading to averaging of the ga...

Introduction: Methamphetamine (MA) abuse produces long term changes to the dopamine system that likely contribute to the psychiatric and cognitive symptoms that are seen in MA users. Emerging evidence from preclinical studies suggests that brain iron accumulation plays a role in MA toxicity, both as a biomarker of damage and a potential source of oxidative stress; however, this relationship has...

Electron spin relaxation caused by the D’yakonov-Perel’ mechanism is investigated theoretically in asymmetrical A3B5 heterostructures. The total spin relaxation anisotropy is demonstrated for a wide range of structure parameters and temperatures. The spin relaxation rates dependences are derived for GaAs-based heterojunction and triangular quantum well. The calculations show a few orders of mag...

The magnetic state of the single-component molecular compound, [Cu(tmdt)2], is investigated by means of H-NMR. An abrupt spectral broadening below 13 K and a sharp peak in nuclear spin-lattice relaxation rate, T 1 , at 13 K are observed as clear manifestations of a second-order antiferromagnetic transition, which is consistent with the previously reported magnetic susceptibility and EPR measure...