Inhomogeneous Low Frequency Spin Dynamics inLa1.65Eu0.2Sr0.15CuO4

Inhomogeneous low frequency spin dynamics in La(1.65)Eu(0.2)Sr(0.15)CuO(4).

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...

Evolution of the low-frequency spin dynamics in ferromagnetic manganites

Elastic and inelastic neutron scattering was used to study two ferromagnetic manganites A1−xBxMnO3 (x ≈ 0.3) with Tc=197.9 K and 300.9 K. The spin dynamical behavior of these is similar at low temperatures, but drastically different at temperatures around Tc. While the formation of spin clusters of size (∼ 20 Å) dominates the spin dynamics of the 197.9 K sample close to Tc, the paramagnetic to ...

Detection of spin torque magnetization dynamics through low frequency noise

Low-frequency spin dynamics in a canted antiferromagnet.

Resistively detected nuclear spin relaxation measurements in closely separated two-dimensional electron systems reveal strong low-frequency electron-spin fluctuations in the quantum Hall regime. As the temperature is decreased, the spin fluctuations, manifested by a sharp enhancement of the nuclear spin-lattice relaxation rate 1/T1, continue to grow down to the lowest temperature of 66 millikel...

Spin dynamics in low-dimensional semiconductor structures

Résumé / Streszczenie Abstract This work is devoted to the studies of spin dynamics of magnetic Mn ions embedded in low-dimensional CdTe-based nanostructures. The particular emphasis is focused on the system of single CdTe quantum dots with single Mn ions, which give an insight into unperturbed interactions of magnetic ion with its semiconductor environment. A method of all-optical manipulation...