Authors: | Amelin, Kirill Viirok, Johan Nagel, Urmas Rõõm, Toomas Engelmayer, Johannes Dey, Tusharkanti Agung Nugroho, Agustinus Lorenz, Thomas Wang, Zhe |
Title: | Quantum spin dynamics of quasi-one-dimensional Heisenberg-Ising magnets in a transverse field: confined spinons, E8 spectrum, and quantum phase transitions |
Language (ISO): | en |
Abstract: | We report on high-resolution terahertz spectroscopic studies of quantum spin dynamics in the quasi-one-dimensional Ising-like ferromagnet CoNb2O6 and antiferromagnet BaCo2V2O8 as a function of an applied transverse magnetic field. In the ordered phases stabilized by inter-chain couplings, we reveal characteristics for confined spinon excitations, E8 dynamical spectrum, and field-induced quantum phase transitions. The connections between these characteristic dynamical features are found in the field-dependent evolution of the excitation spectra. |
Subject Headings: | Confined spinons Heisenberg-Ising spin chain Transverse-field Ising-chain quantum critical point E8 dynamical spectrum Quantum phase transition Quantum spin dynamics |
URI: | http://hdl.handle.net/2003/41252 http://dx.doi.org/10.17877/DE290R-23093 |
Issue Date: | 2022-12-07 |
Rights link: | https://creativecommons.org/licenses/by/4.0/ |
Appears in Collections: | Fakultät für Physik |
Files in This Item:
File | Description | Size | Format | |
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Amelin_2022_J._Phys._A _Math._Theor._55_484005.pdf | 1.54 MB | Adobe PDF | View/Open |
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