Nuclear magnetic resonance studies in a model transverse field Ising system
Fuente:
arXiv
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| Autori principali: | , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
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| _version_ | 1866929402471776256 |
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| author | Nian, Y-H. Vinograd, I. Chaffey, C. Li, Y. Zic, M. P. Massat, P. Singh, R. R. P. Fisher, I. R. Curro, N. J. |
| author_facet | Nian, Y-H. Vinograd, I. Chaffey, C. Li, Y. Zic, M. P. Massat, P. Singh, R. R. P. Fisher, I. R. Curro, N. J. |
| contents | The suppression of ferroquadrupolar order in TmVO$_4$ in a magnetic field is well-described by the transverse field Ising model, enabling detailed studies of critical dynamics near the quantum phase transition. We describe nuclear magnetic resonance measurements in pure and Y-doped single crystals. The non-Kramers nature of the ground state doublet leads to a unique form of the hyperfine coupling that exclusively probes the transverse field susceptibility. Our results show that this quantity diverges at the critical field, in contrast to the mean-field prediction. Furthermore, we find evidence for quantum critical fluctuations present near Tm-rich regions in Y-doped crystals at levels beyond which long-range order is suppressed, suggesting the presence of quantum Griffiths phases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_18519 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nuclear magnetic resonance studies in a model transverse field Ising system Nian, Y-H. Vinograd, I. Chaffey, C. Li, Y. Zic, M. P. Massat, P. Singh, R. R. P. Fisher, I. R. Curro, N. J. Strongly Correlated Electrons The suppression of ferroquadrupolar order in TmVO$_4$ in a magnetic field is well-described by the transverse field Ising model, enabling detailed studies of critical dynamics near the quantum phase transition. We describe nuclear magnetic resonance measurements in pure and Y-doped single crystals. The non-Kramers nature of the ground state doublet leads to a unique form of the hyperfine coupling that exclusively probes the transverse field susceptibility. Our results show that this quantity diverges at the critical field, in contrast to the mean-field prediction. Furthermore, we find evidence for quantum critical fluctuations present near Tm-rich regions in Y-doped crystals at levels beyond which long-range order is suppressed, suggesting the presence of quantum Griffiths phases. |
| title | Nuclear magnetic resonance studies in a model transverse field Ising system |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2402.18519 |