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Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder

Contributors

Ward, Simon; Mena, M.; Bouillot, Pierre; Kollath, Corinna; Giamarchi, Thierry; Schmidt, K. P.; Normand, B.; Krämer, K. W.; Biner, D.; Bewley, R.; Guidi, T.; Boehm, M.; McMorrow, D. F.; Ruegg, Christian

Published in

Physical Review Letters, vol. 118, no. 17, 177202

Publication date

2017

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.

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

WARD, Simon et al. Bound States and Field-Polarized Haldane Modes in a Quantum Spin Ladder. In: Physical Review Letters, 2017, vol. 118, n° 17, p. 177202. doi: 10.1103/PhysRevLett.118.177202

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Article (Published version)

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Journal ISSN

0031-9007
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Technical informations

Creation

20/12/2017 18:46:00

First validation

20/12/2017 18:46:00

Update

15/03/2023 07:42:30

Status update

15/03/2023 07:42:30

Last indexation

31/10/2024 09:15:01
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