Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder
Ward S, Mena M, Bouillot P, Kollath C, Giamarchi T, Schmidt KP, Normand B, Kramer KW, Biner D, Bewley R, Guidi T, Boehm M, Mcmorrow DF, Ruegg C (2017)
Publication Language: English
Publication Status: Published
Publication Type: Journal article
Publication year: 2017
Journal
Publisher: AMER PHYSICAL SOC
Book Volume: 118
Journal Issue: 17
DOI: 10.1103/PhysRevLett.118.177202
Abstract
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 modeling of the dynamical response demonstrates our complete quantitative understanding of these states.
Authors with CRIS profile
Involved external institutions
Paul Scherrer Institute (PSI)
Switzerland (CH)
Geneva University Hospitals / Hôpitaux universitaires de Genève (HUG)
Switzerland (CH)
University of Geneva / Université de Genève (UNIGE)
Switzerland (CH)
Universität Bern
Switzerland (CH)
Rutherford Appleton Laboratory
United Kingdom (GB)
Institute Laue-Langevin (ILL)
France (FR)
University College London (UCL)
United Kingdom (GB)
Switzerland (CH)
Geneva University Hospitals / Hôpitaux universitaires de Genève (HUG)
Switzerland (CH)
University of Geneva / Université de Genève (UNIGE)
Switzerland (CH)
Universität Bern
Switzerland (CH)
Rutherford Appleton Laboratory
United Kingdom (GB)
Institute Laue-Langevin (ILL)
France (FR)
University College London (UCL)
United Kingdom (GB)
How to cite
APA:
Ward, S., Mena, M., Bouillot, P., Kollath, C., Giamarchi, T., Schmidt, K.P.,... Ruegg, C. (2017). Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder. Physical Review Letters, 118(17). https://dx.doi.org/10.1103/PhysRevLett.118.177202
MLA:
Ward, S., et al. "Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder." Physical Review Letters 118.17 (2017).
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