Ward, Simon; Bouillot, P.; Kollath, C.; Giamarchi, T.; Schmidt, K.P.; Normand, Bruce; Krämer, Karl; Biner, Daniel; Bewley, R.; Guidi, T.; Boehm, Martin; McMorrow, Des; Rüegg, Christian (2017). Bound states and field-polarized Haldane modes in a quantum spin ladder. Physical review letters, 118(17) American Physical Society 10.1103/PhysRevLett.118.177202
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The challenge of one-dimensional systems is to understand their physics beyond the level of known elementary excitations. By high-resolution neutron spectroscopy in a quantum spin ladder material, we probe the leading multiparticle excitation by characterizing the two-magnon bound state at zero field. By applying high magnetic fields, we create and select the singlet (longitudinal) and triplet (transverse) excitations of the fully spin-polarized ladder, which have not been observed previously and are close analogs of the modes anticipated in a polarized Haldane chain. Theoretical modelling of the dynamical response demonstrates our complete quantitative understanding of these states.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Krämer, Karl, Biner, Daniel |
Subjects: |
500 Science > 530 Physics 500 Science > 540 Chemistry |
ISSN: |
0031-9007 |
Publisher: |
American Physical Society |
Language: |
English |
Submitter: |
Karl Krämer |
Date Deposited: |
10 Jan 2017 11:31 |
Last Modified: |
05 Dec 2022 15:00 |
Publisher DOI: |
10.1103/PhysRevLett.118.177202 |
ArXiv ID: |
1609.00198v1 |
BORIS DOI: |
10.7892/boris.90908 |
URI: |
https://boris.unibe.ch/id/eprint/90908 |
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