scholarly journals How spin-orbital entanglement depends on the spin-orbit coupling in a Mott insulator

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Dorota Gotfryd ◽  
Ekaterina M. Pärschke ◽  
Jiří Chaloupka ◽  
Andrzej M. Oleś ◽  
Krzysztof Wohlfeld
Keyword(s):  
Mott Insulator ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Spin Orbital

scholarly journals Evolution of Spin-Orbital Entanglement with Increasing Ising Spin-Orbit Coupling

2020 ◽  
Vol 5 (3) ◽  
pp. 53
Author(s):  
Dorota Gotfryd ◽  
Ekaterina Pärschke ◽  
Krzysztof Wohlfeld ◽  
Andrzej M. Oleś
Keyword(s):  
Quantum Entanglement ◽  
Transition Metal Oxides ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Spin Orbital ◽  
Ising Spin ◽  
Quantum Matter ◽  
Effective Models ◽  
Strong Spin

Several realistic spin-orbital models for transition metal oxides go beyond the classical expectations and could be understood only by employing the quantum entanglement. Experiments on these materials confirm that spin-orbital entanglement has measurable consequences. Here, we capture the essential features of spin-orbital entanglement in complex quantum matter utilizing 1D spin-orbital model which accommodates SU(2)⊗SU(2) symmetric Kugel-Khomskii superexchange as well as the Ising on-site spin-orbit coupling. Building on the results obtained for full and effective models in the regime of strong spin-orbit coupling, we address the question whether the entanglement found on superexchange bonds always increases when the Ising spin-orbit coupling is added. We show that (i) quantum entanglement is amplified by strong spin-orbit coupling and, surprisingly, (ii) almost classical disentangled states are possible. We complete the latter case by analyzing how the entanglement existing for intermediate values of spin-orbit coupling can disappear for higher values of this coupling.

scholarly journals Spiral spin textures of a bosonic Mott insulator with SU(3) spin-orbit coupling

2014 ◽  
Vol 90 (19) ◽  
Author(s):  
Tobias Graß ◽  
Ravindra W. Chhajlany ◽  
Christine A. Muschik ◽  
Maciej Lewenstein
Keyword(s):  
Mott Insulator ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Spiral Spin

Influence of Spin-Orbit Coupling on Electronic Structure of Polyyne and Cumulene Carbynes

MRS Advances ◽  
2016 ◽  
Vol 1 (19) ◽  
pp. 1353-1357
Author(s):  
Sergey Karabanov ◽  
Pavel Dyachkov ◽  
Dmitry Suvorov ◽  
Gennady Gololobov ◽  
Dmitry Tarabrin ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Fermi Level ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Observational Method ◽  
Spin Orbital ◽  
Structure Splitting ◽  
Spin Orbital Coupling

ABSTRACTThe present paper has suggested a new non-observational method to calculate electronic structure of carbynes taking into consideration the influence of the spin-orbital coupling. The method is demonstrated by calculations of the structure splitting at the Fermi level in cumulene and polyyne carbynes having semiconductor and metallic electronic structure correspondingly. These couplings result in 2 - 3 meV gaps.

scholarly journals Crystal structure and physical properties of the Sr-vacant spin-orbit-coupling induced Mott insulator Sr 2−x IrO 4

2015 ◽  
Vol 220 ◽  
pp. 39-44 ◽  
Author(s):  
Jimei Kong ◽  
S.L. Liu ◽  
Jie Cheng ◽  
Haiyun Wang ◽  
Xing’ao Li ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Physical Properties ◽  
Mott Insulator ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit
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