Triplons, magnons, and spinons in a single quantum spin system: SeCuO3
Autor: | Philippe Bourges, Henrik M. Rønnow, Paul Steffens, Bruce Normand, Helmuth Berger, Krunoslav Prša, Martin Boehm, Luc Testa, Ivica Živković, V. Šurija |
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Rok vydání: | 2021 |
Předmět: |
Physics
Condensed matter physics Strongly Correlated Electrons (cond-mat.str-el) Magnon Order (ring theory) FOS: Physical sciences magnetic-properties 02 engineering and technology bound-states Type (model theory) 021001 nanoscience & nanotechnology Coupling (probability) excitations 01 natural sciences Spinon Inelastic neutron scattering Condensed Matter - Strongly Correlated Electrons Spin wave 0103 physical sciences Antiferromagnetism Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology crystal-structures |
Zdroj: | Physical Review B |
ISSN: | 2469-9969 |
DOI: | 10.1103/physrevb.103.l020409 |
Popis: | Quantum spin systems exhibit an enormous range of collective excitations, but their spin waves, gapped triplons, fractional spinons, or yet other modes are generally held to be mutually exclusive. Here we show by neutron spectroscopy on SeCuO$_3$ that magnons, triplons, and spinons are present simultaneously. We demonstrate that this is a consequence of a structure consisting of two coupled subsystems and identify all the interactions of a minimal magnetic model. Our results serve qualitatively to open the field of multi-excitation spin systems and quantitatively to constrain the complete theoretical description of one member of this class of materials. 8 pages, 5 figures |
Databáze: | OpenAIRE |
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