دورية أكاديمية
Phase diagrams and excitations of anisotropic S=1 quantum magnets on the triangular lattice
| العنوان: | Phase diagrams and excitations of anisotropic S=1 quantum magnets on the triangular lattice |
|---|---|
| المؤلفون: | Seifert, Urban F. P., Savary, Lucile |
| المساهمون: | Laboratoire de Physique de l'ENS Lyon (Phys-ENS), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Kavli Institute for Theoretical Physics Santa Barbara (KITP), University of California Santa Barbara (UC Santa Barbara), University of California (UC)-University of California (UC), European Project: 853116,TRANSPORT |
| المصدر: | ISSN: 2469-9950. |
| بيانات النشر: | HAL CCSD American Physical Society |
| سنة النشر: | 2022 |
| المجموعة: | HAL Lyon 1 (University Claude Bernard Lyon 1) |
| مصطلحات موضوعية: | [PHYS.COND.CM-SCE]Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el] |
| الوصف: | 23 pages, 13 figures, 2 tables ; International audience ; The S=1 bilinear-biquadratic Heisenberg exchange model on the triangular lattice with a single-ion anisotropy has previously been shown to host a number of exotic magnetic and nematic orders [Moreno-Cardoner et al., Phys. Rev. B 90, 144409 (2014)], including an extensive region of "supersolid" order. In this work, we amend the model by an XXZ anisotropy in the exchange interactions. Tuning to the limit of an exactly solvable S=1 generalized Ising-/Blume-Capel-type model provides a controlled limit to access phases at finite transverse exchange. Notably, we find an additional macroscopically degenerate region in the phase diagram and study its fate under perturbation theory. We further map out phase diagrams as a function of the XXZ anisotropy parameter, ratio of bilinear and biquadratic interactions and single-ion anisotropy, and compute corrections to the total ordered moment in various phases using systematically constructed linear flavor-wave theory. We also present linear flavor-wave spectra of various states, finding that the lowest-energy band in three-sublattice generalized (i.e. with S^z=\pm1,0) Ising/Blume-Capel states, stabilized by strong exchange anisotropies, is remarkably flat, opening up the way to flat-band engineering of magnetic excitation via stabilizing non-trivial Ising-ordered ground states. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/arxiv/2203.13490; info:eu-repo/grantAgreement//853116/EU/Thermal and Electrical Transport in Correlated Quantum Materials/TRANSPORT; hal-03750906; https://hal.science/hal-03750906Test; ARXIV: 2203.13490 |
| الإتاحة: | https://doi.org/10.1103/PhysRevB.106.195147Test https://hal.science/hal-03750906Test |
| رقم الانضمام: | edsbas.1B279C27 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |