Magnetic and lattice excitations in the quasi-2D quantum spin compound (CuCl)LaNb₂O₇

authored by

Vladimir Gnezdilov, Peter Lemmens, Dirk Wulferding, Atsushi Kitada, Hiroshi Kageyama

Abstract

Raman scattering phonon data of the quasi-two-dimensional quantum spin system (CuCl)LaNb2O7 are used to derive an effective structural model that may serve as a basis for its unconventional magnetic properties. Furthermore, a rich spectrum of magnetic excitations is observed, including quasielastic energy density fluctuations and finite energy bound states. These modes are the key to understand (CuCl)LaNb2O7 as a system with strong interactions between well-localized triplet excitations based on a pronounced competition of magnetic exchange.

External Organisation(s)

Technische Universität Braunschweig
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine
Seoul National University
Kyoto University

Type

Article

Journal

Low temperature physics

Volume

47

Pages

928-936

No. of pages

9

ISSN

1063-777X

Publication date

30.11.2021

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Electronic version(s)

https://doi.org/10.1063/10.0006564 (Access: Closed)