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Nuclear magnetic resonance studies in a model transverse field Ising system
- Source :
- Front. Phys. vol 12 (2024)
- Publication Year :
- 2024
-
Abstract
- 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.<br />Comment: 13 pages, 6 figures
- Subjects :
- Condensed Matter - Strongly Correlated Electrons
Subjects
Details
- Database :
- arXiv
- Journal :
- Front. Phys. vol 12 (2024)
- Publication Type :
- Report
- Accession number :
- edsarx.2402.18519
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.3389/fphy.2024.1393229