تقرير
Precise determination of low energy electronuclear Hamiltonian for LiY$_{1-x}$Ho$_{x}$F$_{4}$
| العنوان: | Precise determination of low energy electronuclear Hamiltonian for LiY$_{1-x}$Ho$_{x}$F$_{4}$ |
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| المؤلفون: | Beckert, A., Hermans, R. I., Grimm, M., Freeman, J. R., Linfield, E. H., Davies, A. G., Müller, M., Sigg, H., Gerber, S., Matmon, G., Aeppli, G. |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter Physics (Other) Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics, Condensed Matter - Strongly Correlated Electrons, Physics - Optics |
| الوصف: | We use complementary optical spectroscopy methods to directly measure the lowest crystal-field energies of the rare-earth quantum magnet LiY$_{1-x}$Ho$_{x}$F$_{4}$, including their hyperfine splittings, with more than 10 times higher resolution than previous work. We are able to observe energy level splittings due to the $^6\mathrm{Li}$ and $^7\mathrm{Li}$ isotopes, as well as non-equidistantly spaced hyperfine transitions originating from dipolar and quadrupolar hyperfine interactions. We provide refined crystal field parameters and extract the dipolar and quadrupolar hyperfine constants ${A_J=0.02703\pm0.00003}$ $\textrm{cm}^{-1}$ and ${B= 0.04 \pm0.01}$ $\textrm{cm}^{-1}$, respectively. Thereupon we determine all crystal-field energy levels and magnetic moments of the $^5I_8$ ground state manifold, including the (non-linear) hyperfine corrections. The latter match the measurement-based estimates. The scale of the non-linear hyperfine corrections sets an upper bound for the inhomogeneous line widths that would still allow for unique addressing of a selected hyperfine transition. e.g. for quantum information applications. Additionally, we establish the far-infrared, low-temperature refractive index of LiY$_{1-x}$Ho$_{x}$F$_{4}$. Comment: 9 pages, 6 Figures, 3 Tables |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.106.115119 |
| URL الوصول: | http://arxiv.org/abs/2012.09233 |
| رقم الأكسشن: | edsarx.2012.09233 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.106.115119 |
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