Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Gotfryd, Dorota"'
Publikováno v:
Condensed Matter 5, 53 (2020)
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 measu
Externí odkaz:
http://arxiv.org/abs/2009.11773
Autor:
Sikora, Olga, Gotfryd, Dorota, Ptok, Andrzej, Sternik, Małgorzata, Wohlfeld, Krzysztof, Oleś, Andrzej M., Piekarz, Przemysław
Publikováno v:
Phys. Rev. B 102, 085129 (2020)
We use the density functional theory and lattice dynamics calculations to investigate the properties of potassium superoxide KO$_2$ in which spin, orbital, and lattice degrees of freedom are interrelated and determine the low-temperature phase. After
Externí odkaz:
http://arxiv.org/abs/2007.15544
Autor:
Gotfryd, Dorota, Paerschke, Ekaterina M., Chaloupka, Jiri, Oles, Andrzej M., Wohlfeld, Krzysztof
Publikováno v:
Phys. Rev. Research 2, 013353 (2020)
The concept of the entanglement between spin and orbital degrees of freedom plays a crucial role in understanding various phases and exotic ground states in a broad class of materials, including orbitally ordered materials and spin liquids. We invest
Externí odkaz:
http://arxiv.org/abs/1911.12180
Publikováno v:
Physical Review B 99, 064425 (2019)
Compounds of transition metal ions with strong spin-orbit coupling recently attracted attention due to the possibility to host frustrated bond-dependent anisotropic magnetic interactions. In general, such interactions lead to complex phase diagrams t
Externí odkaz:
http://arxiv.org/abs/1902.07451
Autor:
Gotfryd, Dorota, Rusnačko, Juraj, Wohlfeld, Krzysztof, Jackeli, George, Chaloupka, Jiří, Oleś, Andrzej M.
Publikováno v:
Phys. Rev. B 95, 024426 (2017)
We explore the phase diagram of the Kitaev-Heisenberg model with nearest neighbor interactions on the honeycomb lattice using the exact diagonalization of finite systems combined with the cluster mean field approximation, and supplemented by the insi
Externí odkaz:
http://arxiv.org/abs/1608.05333
Autor:
Gotfryd, Dorota, Oleś, Andrzej M.
Publikováno v:
Acta Phys. Polon. A 127, 318 (2015)
We present a detailed analysis of the Kitaev--Heisenberg model on a single hexagon. The energy spectra and spin--spin correlations obtained using exact diagonalisation indicate quantum phase transitions between antiferromagnetic and anisotropic spin
Externí odkaz:
http://arxiv.org/abs/1503.08204
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