45 citations · 110 across the 4 of their papers we have counts for
6 papers
From quantum-mechanical to classical dynamics in the central-spin model
Daniel Stanek, Carsten Raas, Götz S. Uhrig
We discuss the semiclassical and classical character of the dynamics of a single spin 1/2 coupled to a bath of noninteracting spins 1/2. On the semiclassical level, we extend our p…
Anomalous behavior of control pulses in presence of noise with singular autocorrelation
Daniel Stanek, Benedikt Fauseweh, Christopher Stihl +2
We report on the anomalous behavior of control pulses for spins under spin-spin relaxation and subject to classical noise with a singular autocorrelation function. This behavior is…
Conservation laws protect dynamic spin correlations from decay: Limited role of integrability in the central spin model
Goetz S. Uhrig, Johannes Hackmann, Daniel Stanek +2
Mazur's inequality renders statements about persistent correlations possible. We generalize it in a convenient form applicable to any set of linearly independent constants of motio…
Dynamics and decoherence in the central spin model in the low-field limit
Daniel Stanek, Carsten Raas, Götz S. Uhrig
We present a combination of analytic calculations and a powerful numerical method for large spin baths in the low-field limit. The hyperfine interaction between the central spin an…
Self-consistent spin-wave theory for a frustrated Heisenberg model with biquadratic exchange in the columnar phase and its application to iron pnictides
Daniel Stanek, Oleg P. Sushkov, Götz S. Uhrig
Recent neutron scattering studies revealed the three dimensional character of the magnetism in the iron pnictides and a strong anisotropy between the exchange perpendicular and par…
Three dimensional generalization of the - Heisenberg model on a square lattice and role of the interlayer coupling
Michael Holt, Oleg P. Sushkov, Daniel Stanek +1
A possibility to describe magnetism in the iron pnictide parent compounds in terms of the two-dimensional frustrated Heisenberg - model has been actively discussed recent…