scholarly journals Designing Quantum Spin-Orbital Liquids in Artificial Mott Insulators

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Xu Dou ◽  
Valeri N. Kotov ◽  
Bruno Uchoa
Keyword(s):  
Quantum Spin ◽  
Mott Insulators ◽  
Spin Orbital

scholarly journals Quantum loop states in spin-orbital models on the honeycomb lattice

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Lucile Savary
Keyword(s):  
Realistic Model ◽  
Quantum Spin ◽  
Honeycomb Lattice ◽  
Spin Liquids ◽  
Spin Orbital ◽  
Experimental Realization ◽  
Quantum Phases ◽  
Quantum Spin Liquids ◽  
Quantum Spin Liquid ◽  
Symmetry Protected

AbstractThe search for truly quantum phases of matter is a center piece of modern research in condensed matter physics. Quantum spin liquids, which host large amounts of entanglement—an entirely quantum feature where one part of a system cannot be measured without modifying the rest—are exemplars of such phases. Here, we devise a realistic model which relies upon the well-known Haldane chain phase, i.e. the phase of spin-1 chains which host fractional excitations at their ends, akin to the hallmark excitations of quantum spin liquids. We tune our model to exactly soluble points, and find that the ground state realizes Haldane chains whose physical supports fluctuate, realizing both quantum spin liquid like and symmetry-protected topological phases. Crucially, this model is expected to describe actual materials, and we provide a detailed set of material-specific constraints which may be readily used for an experimental realization.

scholarly journals Magnetic phase transitions in quantum spin-orbital liquids

2020 ◽  
Vol 101 (15) ◽  
Author(s):  
Shi Feng ◽  
Niravkumar D. Patel ◽  
Panjin Kim ◽  
Jung Hoon Han ◽  
Nandini Trivedi
Keyword(s):  
Phase Transitions ◽  
Magnetic Phase ◽  
Quantum Spin ◽  
Magnetic Phase Transitions ◽  
Spin Orbital

scholarly journals Fractionalized Fermionic Quantum Criticality in Spin-Orbital Mott Insulators

2020 ◽  
Vol 125 (25) ◽  
Author(s):  
Urban F. P. Seifert ◽  
Xiao-Yu Dong ◽  
Sreejith Chulliparambil ◽  
Matthias Vojta ◽  
Hong-Hao Tu ◽  
...  
Keyword(s):  
Quantum Criticality ◽  
Mott Insulators ◽  
Spin Orbital

scholarly journals Insights into the Spin–Orbital Entanglement in Complex Iridium Oxides from High-Field ESR Spectroscopy

2021 ◽  
Author(s):  
Vladislav Kataev
Keyword(s):  
High Field ◽  
Degrees Of Freedom ◽  
Esr Spectroscopy ◽  
Dynamic Properties ◽  
Spin Dynamics ◽  
Double Perovskite ◽  
Quantum Spin ◽  
Spin Orbital ◽  
High Field Esr ◽  
Iridium Oxides

AbstractComplex iridium oxides have attracted recently a substantial interdisciplinary attention due to an intimate entanglement of spin and orbital degrees of freedom which may give rise to a novel spin–orbital Mott insulating behavior and exotic quantum spin liquid phases. Electron spin resonance (ESR) spectroscopy is known to be an instructive tool for studying the spin–orbital coupling (SOC) effects as it can directly access the relevant parameters sensitive to SOC, such as the g factor tensor, magnetic anisotropy gaps and spin dynamics. In this article, a systematic study at the Leibniz IFW Dresden of the static and dynamic properties of selected Ir-based materials with multi-frequency high-field ESR spectroscopy will be reviewed. Specifically, evidence for a surprisingly isotropic antiferromagnetic spin dynamics and the inversion of the orbital states in the prototypical spin–orbital Mott insulator $$\text {Sr}_2\text {IrO}_4$$ Sr 2 IrO 4 , observation of the collective resonance modes in the family of double perovskites $$\text {La}_2$$ La 2 B$$\text {IrO}_6$$ IrO 6 (B = Cu, Co) and the origin of the unexpected magnetism in the double perovskite $$\text {Ba}_2\text {YIrO}_6$$ Ba 2 YIrO 6 will be highlighted.

Doped spin–orbital Mott insulators: Orbital dilution versus spin–orbital polarons

2022 ◽  
Vol 543 ◽  
pp. 168616
Author(s):  
Wojciech Brzezicki ◽  
Adolfo Avella ◽  
Mario Cuoco ◽  
Andrzej M. Oleś
Keyword(s):  
Mott Insulators ◽  
Spin Orbital

6-GHz lattice response in a quantum spin-orbital liquid probed by time-resolved resonant x-ray scattering

2021 ◽  
Vol 104 (20) ◽  
Author(s):  
Kou Takubo ◽  
Takashi Mizokawa ◽  
Huiyuan Man ◽  
Kohei Yamamoto ◽  
Yujun Zhang ◽  
...  
Keyword(s):  
Quantum Spin ◽  
Spin Orbital ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering
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