Possible quantum paraelectric state in Kitaev spin liquid candidate H3LiIr2O6
| العنوان: | Possible quantum paraelectric state in Kitaev spin liquid candidate H3LiIr2O6 |
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| المؤلفون: | Shuai Wang, Fa Wang, Long Zhang |
| المصدر: | Science China Physics, Mechanics & Astronomy. 63 |
| بيانات النشر: | Springer Science and Business Media LLC, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Physics, Condensed Matter - Materials Science, Phase transition, Quantum paraelectricity, Strongly Correlated Electrons (cond-mat.str-el), Proton, Condensed matter physics, Quantum dynamics, Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, General Physics and Astronomy, 01 natural sciences, Condensed Matter - Strongly Correlated Electrons, Dipole, 0103 physical sciences, Ising model, Quantum spin liquid, 010306 general physics, Ground state, 010303 astronomy & astrophysics |
| الوصف: | A new quantum spin liquid (QSL) candidate material H$_{3}$LiIr$_{2}$O$_{6}$ was synthesized recently and was found not to show any magnetic order or phase transition down to low temperatures. In this work, we study the quantum dynamics of the hydrogen ions, i.e., protons, in this material by combining first-principles calculations and theoretical analysis. We show that each proton and its adjacent oxygen ions form an electric dipole. The dipole interactions and the proton tunneling are captured by a transverse-field Ising model with a quantum disordered paraelectric ground state. The dipole excitations have an energy gap $\Delta_{\mathrm{d}}\simeq 60$ meV, and can be probed by the infrared optical spectroscopy and the dielectric response. We argue that the electric dipole fluctuations renormalize the magnetic interactions in H$_{3}$LiIr$_{2}$O$_{6}$ and lead to a Kitaev QSL state. Comment: v2: published version |
| تدمد: | 1869-1927 1674-7348 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90289b606218f08252fa38fadea71a53 https://doi.org/10.1007/s11433-020-1569-9 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....90289b606218f08252fa38fadea71a53 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 18691927 16747348 |
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