DataVXPhysical Review BPaper
journal article·2023-07-18Open access

Confinement of many-body Bethe strings

Jiahao Yang, Tao Xie, S. E. Nikitin, Jianda Wu, A. Podlesnyak

Physical Review B· Volume 108· Issue 2
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Source abstract

Abstract

Based on the Bethe ansatz approach and inelastic neutron scattering experiments, we reveal the evolution of confinement of many-body Bethe strings in ordered regions of the quasi-one-dimensional antiferromagnet ${\mathrm{YbAlO}}3$. In the antiferromagnetic phase, the spin dynamics is dominated by confined length-1 Bethe strings, whose dominancy in the high-energy branch of the excitation spectrum yields to confined length-2 Bethe strings when the material is tuned to the spin-density-wave phase. In the thermal-induced disordered region, the confinement effect disappears, and the system restores the conventional quantum integrable physics of the one-dimensional Heisenberg model. Our results establish a unified picture based on a Bethe string for the spin dynamics in different magnetic phases of ${\mathrm{YbAlO}}3$, and thus provide profound insight into many-body quantum magnetism.
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Research context

OpenAlex topics: Physics of Superconductivity and Magnetism · Advanced Condensed Matter Physics · Quantum, superfluid, helium dynamics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai 201210, China

Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

Quantum Criticality and Dynamics Group, Paul Scherrer Institut, CH-5232 Villigen-PSI, Switzerland

School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China

Shanghai Branch, Hefei National Laboratory, Shanghai 201315, China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Shanghai · Oak Ridge National Laboratory · U.S. Department of Energy · Office of Science · Basic Energy Sciences · HORIZON EUROPE Marie Sklodowska-Curie Actions · Innovation Program for Quantum Science and Technology

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