Mena, M;
Hanni, N;
Ward, S;
Hirtenlechner, E;
Bewley, R;
Hubig, C;
Schollwock, U;
... Ruegg, C; + view all
(2020)
Thermal Control of Spin Excitations in the Coupled Ising-Chain Material RbCoCl3.
Physical Review Letters
, 124
, Article 257201. 10.1103/PhysRevLett.124.257201.
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Abstract
We have used neutron spectroscopy to investigate the spin dynamics of the quantum ( S = 1 / 2 ) antiferromagnetic Ising chains in RbCoCl 3 . The structure and magnetic interactions in this material conspire to produce two magnetic phase transitions at low temperatures, presenting an ideal opportunity for thermal control of the chain environment. The high-resolution spectra we measure of two-domain-wall excitations therefore characterize precisely both the continuum response of isolated chains and the “Zeeman-ladder” bound states of chains in three different effective staggered fields in one and the same material. We apply an extended Matsubara formalism to obtain a quantitative description of the entire dataset, Monte Carlo simulations to interpret the magnetic order, and finite-temperature density-matrix renormalization-group calculations to fit the spectral features of all three phases.
| Type: | Article |
|---|---|
| Title: | Thermal Control of Spin Excitations in the Coupled Ising-Chain Material RbCoCl3 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.124.257201 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.124.257201 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, DYNAMICAL CORRELATION-FUNCTIONS, QUANTUM PHASE-TRANSITION, RAMAN-SCATTERING, ANTI-FERROMAGNETS, CSCOCL3, CRITICALITY, CSCOBR3 |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10104104 |
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