241 citations · 450 across the 11 of their papers we have counts for
11 papers
Giant Resonant Self-Blocking in Magnetophononically Driven Quantum Magnets
M. Yarmohammadi, M. Krebs, G. S. Uhrig +1
Magnetophononics, the modulation of magnetic interactions by driven infrared-active lattice excitations, is emerging as a key mechanism for the ultrafast dynamical control of both…
Femtosecond phononic coupling to both spins and charges in a room temperature antiferromagnetic semiconductor
D. Bossini, S. dal Conte, M. Terschanski +7
Spintronics is postulated on the possibility to employ the magnetic degree of freedom of electrons for computation and couple it to charges. In this view, the combination of the hi…
Time-dependent correlations in quantum magnets at finite temperature
B. Fauseweh, F. Groitl, T. Keller +4
In this article we investigate the time dependence of the gap mode of copper nitrate at various temperatures. We combine state-of-the-art theoretical calculations with high precisi…
Magnetic excitations in the S = 1/2 antiferromagnetic-ferromagnetic chain compound BaCu2V2O8 at zero and finite temperature
E. S. Klyushina, A. C. Tiegel, B. Fauseweh +7
Unlike most quantum systems which rapidly become incoherent as temperature is raised, strong correlations persist at elevated temperatures in dimer magnets, as revealed by…
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…
Interaction Quenches of Fermi Gases
Götz S. Uhrig
It is shown that the jump in the momentum distribution of Fermi gases evolves smoothly for small and intermediate times once an interaction between the fermions is suddenly switche…
Optimized pulses for the perturbative decoupling of spin and decoherence bath
S. Pasini, P. Karbach, C. Raas +1
In the framework of nuclear magnetic resonance, we consider the general problem of the coherent control of a spin coupled to a bath by means of composite or continuous pulses of du…
Magnetic properties of (VO)_2P_2O_7: two-plane structure and spin-phonon interactions
G. S. Uhrig, B. Normand
Detailed experiments on single-crystal (VO)_2P_2O_7 continue to reveal new and unexpected features. We show that a model composed of two, independent planes of spin chains with fru…
SrCu_2(BO_3)_2 - a Two Dimensional Spin Liquid
Christian Knetter, Alexander Buehler, Erwin Mueller-Hartmann +1
We study an extended Shastry-Sutherland model for SrCu_2(BO_3)_2 and analyze the low lying parts of the energy spectrum by means of a perturbative unitary transformation based on f…
Perturbation Theory by Flow Equations: Dimerized and Frustrated S=1/2 Chain
Christian Knetter, Goetz S. Uhrig
The flow equation method (Wegner 1994) is used as continuous unitary transformation to construct perturbatively effective Hamiltonians. The method is illustrated in detail for dime…
Magnetic Properties of (VO)_2P_2O_7 from Frustrated Interchain Coupling
G. S. Uhrig, B. Normand
Neutron-scattering experiments on (VO)_2P_2O_7 reveal both a gapped magnon dispersion and an unexpected, low-lying second mode. The proximity and intensity of these modes suggest a…