Galina Bazalitsky

Probing exotic spin correlations by muon spin depolarization measurements with applications to spin glass dynamics

We develop a method to probe the local spin dynamic autocorrelation function, using magnetic-field-dependent muon depolarization measurements. We apply this method to muon spin relaxation experiments in the dilute Heisenberg spin glass

Linking dynamic and thermodynamic properties of cuprates: An angle-resolved photoemission study of ( Ca x La 1 − x ) (Ba 1.75 − x La 0.25 + x )Cu 3 O y ( x = 0.1 and 0.4)

\mathrm{Ag}\mathrm{Mn}

Magnetic field–time-scaling relations and exotic spin correlations: a μSR study of spin glasses

(p

Muon polarization in the presence of exotic spin correlations

at. %) at

Magnetic analog of the isotope effect in cuprates

Tg{T}_{g},

Dynamical crossover in an Ising spin glass above T(g): a muon-spin-relaxation investigation of Fe0.05TiS2.

where the correlations of the Mn local magnetic moment are strongly nonexponential. Our results clearly indicate that the dynamics of this spin glass cannot be described by a distribution of correlation times. Therefore, we analyze the data assuming a local spin correlation function which is the product of a power law times a cutoff function. The concentration and temperature dependence of the parameters of this function are determined. Our major conclusion is that in the temperature region close to

Correlation of the Superconducting Critical Temperature with Spin and Orbital Excitation Energies In (Ca{x}La{1-x})(Ba{1.75-x}La{0.25+x})Cu{3}O{y} as Measured by Resonant Inelastic X-ray Scattering

{T}_{g}

Evidence for two fluids in cuprate superconductors from a nuclear resonance study of (CaxLa1- x) (Ba1.75- xLa0.25+x)Cu3Oy

the correlation function is dominated by an algebraic relaxation term.

The thermopower of superconducting NaxCoO2· γH2O; evidence for conduction in a very narrow band

We report angle-resolved photoemission spectroscopy (ARPES) on two families of high temperature superconductors (CaxLa1−x)(Ba1.75−x La 0.25+x)Cu3Oy with x = 0.1 (T max c = 56 K) and x = 0.4 (T c = 82 K). The Fermi surface (FS) is found to be independent of x or y, and its size indicates extreme sample-surface overdoping. This universal FS allowes the comparison of dynamical properties between superconductors of similar structure and identical doping, but different T c . We find that the high-energy (|E| > 50 meV) nodal velocity in the x = 0.4 family is higher than in the x = 0.1 family. The implied correlation between T c and the hopping rate t supports the notion of kinetic energy driven superconductivity in the cuprates. We also find that the antinodal gap is higher for the x = 0.4 family.