Regensburg 2016 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 78: Correlated Electrons: Poster Session
TT 78.30: Poster
Donnerstag, 10. März 2016, 15:00–18:30, Poster D
Electron Spin Resonance Spectroscopy on the Quasi-One-Dimensional Spin Chain Compound Cu(NC5H5)2(Cl1−xBrx)2 (x = 1.0, 0.98, 0.95) — •Julian Zeisner1,2, Stephan Zimmermann1,2, Vladislav Kataev1, Michael Brockmann3, Frank Göhmann3, Michael Karbach3, Andreas Klümper3, Alexander Weiße4, Matthias Thede5, Andrey Zheludev5, and Bernd Büchner1,2 — 1Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden, Dresden, Germany — 2TU Dresden, Dresden, Germany — 3Bergische Universität Wuppertal, Wuppertal, Germany — 4Max-Planck-Institut für Mathematik, Bonn, Germany — 5ETH Zürich, Zürich, Switzerland
Although known for decades low dimensional magnetic systems remain an active field in modern solid state physics. Among other aspects this is due to the peculiarities arising in reduced dimensions which complicated correct theoretical descriptions of such systems. Recently, however, progress was made in exact calculation of electron spin resonance (ESR) properties based on a Heisenberg-Ising Hamiltonian [1]. In our work we present a comparison of these predictions with ESR studies on the quasi-one-dimensional magnet Cu(NC5H5)2Br2. Measurements were performed over a wide frequency and temperature range giving insight into spin dynamics as well as spin structure and the magnetic anisotropy present in this compound. In addition the impact of a partial substitution of Br by Cl on spin dynamics is shown.
M. Brockmann, F. Göhmann, M. Karbach, A. Klümper,
and A. Weiße, PRB 85, 134438 (2012)