Neutron Spin‐Echo Instrumentation for Magnetic Scattering

T Keller, H Trepka, K Habicht… - physica status solidi (b …, 2022 - Wiley Online Library
Neutron spin‐echo (NSE) spectroscopy is a powerful tool for the study of magnon lifetimes
and magnetic critical dynamics. The unique property of NSE is the energy resolution in the …

Magnetic excitations in the antiferromagnetic-ferromagnetic chain compound at zero and finite temperature

ES Klyushina, AC Tiegel, B Fauseweh, A Islam, JT Park… - Physical Review B, 2016 - APS
Unlike most quantum systems which rapidly become incoherent as temperature is raised,
strong correlations persist at elevated temperatures in S= 1 2 dimer magnets, as revealed by …

Hamiltonian of the dimerized antiferromagnetic-ferromagnetic quantum spin chain

ES Klyushina, A Islam, JT Park, EA Goremychkin… - Physical Review B, 2018 - APS
The novel quantum magnet BaCu 2 V 2 O 8 was recently discovered to be a rare physical
realization of a one-dimensional antiferromagnetic-ferromagnetic dimerized chain which …

Evidence for strong correlations at finite temperatures in the dimerized magnet

Y Shangguan, S Bao, ZY Dong, Z Cai, W Wang… - Physical Review B, 2021 - APS
Dimerized magnets forming alternating Heisenberg chains exhibit quantum coherence and
entanglement and thus can find potential applications in quantum information and …

Finite-temperature dynamical correlations for the dimerized spin- chain

E Coira, P Barmettler, T Giamarchi, C Kollath - Physical Review B, 2018 - APS
We use the density matrix renormalization group method to compute the frequency and
momentum-resolved spin-spin correlation functions of a dimerized spin-1/2 chain under a …

Time-dependent correlations in quantum magnets at finite temperature

B Fauseweh, F Groitl, T Keller, K Rolfs, DA Tennant… - Physical Review B, 2016 - APS
In this Rapid Communication we investigate the time dependence of the gap mode of
copper nitrate at various temperatures. We combine state-of-the-art theoretical calculations …

Neutron scattering studies on multiferroic and frustrated systems

S Biesenkamp - 2022 - kups.ub.uni-koeln.de
This thesis reports thorough studies on multiferroic and frustrated systems, whereby specific
focus was put on the investigation of multiferroic domain dynamics. For the respective …

[PDF][PDF] Dynamic Correlations in One-Dimensional Quantum Magnets at Finite Temperature

B Fauseweh - eldorado.tu-dortmund.de
In this thesis we investigate dynamical correlations of spin systems at finite temperature.
Especially we focus on the anomalous decoherence effects found previously in experiments …

Dynamic Correlations in One-Dimensional Quantum Magnets at Finite Temperature

B Fauseweh, GS Uhrig - APS March Meeting Abstracts, 2017 - ui.adsabs.harvard.edu
In our contribution we investigate the anomalous decoherence effects found previously in
theory and experiment of several quantum magnets. A diagrammatic perturbative approach …

[PDF][PDF] Magnetic excitations in the S=

ES Klyushina, AC Tiegel, B Fauseweh, A Islam… - Phys. Rev. B, 2016 - perso.u-cergy.fr
Unlike most quantum systems which rapidly become incoherent as temperature is raised,
strong correlations persist at elevated temperatures in S= 1/2 dimer magnets, as revealed by …