7 citations · 11 across the 2 of their papers we have counts for
13 papers
X-Ray Scattering at FeCo(001) Surfaces and the Crossover between Ordinary and Normal Transitions
Uwe Ritschel
In a recent experiment by Krimmel et al. [PRL 78, 3880 (1997)], the critical behavior of FeCo near a (001) surface was studied by x-ray scattering. Here the experimental data are r…
Casimir Forces at Tricritical Points: Theory and Possible Experiments
Uwe Ritschel, Markus Gerwinski
Using field-theoretical methods and exploiting conformal invariance, we study Casimir forces at tricritical points exerted by long-range fluctuations of the order-parameter field.…
Critical Adsorption in Systems with Weak Surface Field: The Renormalization-Group Approach
A. Ciach, U. Ritschel
We study the surface critical behavior of semi-infinite systems belonging to the bulk universality class of the Ising model. Special attention is paid to the local behavior of expe…
Comment on ``Generalized Dynamic Scaling for Critical Relaxation" [Phys. Rev. Lett. 77, 679 (1996), cond-mat/9607013]
U. Ritschel, P. Czerner
We point out that in nonequilibrium relaxational processes the magnetic field of the initial state (instead of the initial magnetization) has to be considered as the additional sca…
Near-Surface Long-Range Order at the Ordinary Transition: Scaling Analysis and Monte Carlo Results
P. Czerner, U. Ritschel
Motivated by recent experimental activities on surface critical phenomena, we present a detailed theoretical study of the near-surface behavior of the local order parameter m(z) in…
Microscopic Non-Universality versus Macroscopic Universality in Algorithms for Critical Dynamics
U. Ritschel, P. Czerner
We study relaxation processes in spin systems near criticality after a quench from a high-temperature initial state. Special attention is paid to the stage where universal behavior…