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Multiorbital exchange Hamiltonians: Derivation and examples. / Igoshev, Petr; Streltsov, Sergey; Kugel, Kliment.
In: Journal of Magnetism and Magnetic Materials, Vol. 587, 171315, 01.12.2023.

Research output: Contribution to journal › Article › peer-review

Harvard

Igoshev, P, Streltsov, S & Kugel, K 2023, 'Multiorbital exchange Hamiltonians: Derivation and examples', Journal of Magnetism and Magnetic Materials, vol. 587, 171315. https://doi.org/10.1016/j.jmmm.2023.171315

APA

Igoshev, P., Streltsov, S., & Kugel, K. (2023). Multiorbital exchange Hamiltonians: Derivation and examples. Journal of Magnetism and Magnetic Materials, 587, [171315]. https://doi.org/10.1016/j.jmmm.2023.171315

Vancouver

Igoshev P, Streltsov S, Kugel K. Multiorbital exchange Hamiltonians: Derivation and examples. Journal of Magnetism and Magnetic Materials. 2023 Dec 1;587:171315. doi: 10.1016/j.jmmm.2023.171315

Author

Igoshev, Petr ; Streltsov, Sergey ; Kugel, Kliment. / Multiorbital exchange Hamiltonians: Derivation and examples. In: Journal of Magnetism and Magnetic Materials. 2023 ; Vol. 587.

BibTeX

@article{61e8267907934c52ad6aa27904b984fd,
title = "Multiorbital exchange Hamiltonians: Derivation and examples",
abstract = "We present a detailed derivation of the effective Hamiltonian for a strongly correlated electron system involving both orbital and spin degrees of freedom. This problem is relevant to a wide class of materials containing ions with the orbitally degenerate ground state (Jahn–Teller ions). We treat in detail the case of double degenerate orbitals, obtain the Kugel–Khomskii model, and then pass to a more general multiorbital case. Based on the derived Hamiltonians, we analyze possible spin and orbital configurations, which can be rather nontrivial, especially in the multiorbital case. A special emphasis is put on to a specific example of the square lattice of Jahn–Teller ions typical of layered perovskites.",
author = "Petr Igoshev and Sergey Streltsov and Kliment Kugel",
note = "The derivation of two-orbital model (Section 3) and analysis of its application to perovskites (Section 5) were supported by the Russian Science Foundation via project RSF 23-42-00069. General derivation of effective Hamiltonian (Section 4) was funded by the program “Quantum ” No. 122021000038-7.",
year = "2023",
month = dec,
day = "1",
doi = "10.1016/j.jmmm.2023.171315",
language = "English",
volume = "587",
journal = "Journal of Magnetism and Magnetic Materials",
issn = "0304-8853",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Multiorbital exchange Hamiltonians: Derivation and examples

AU - Igoshev, Petr

AU - Streltsov, Sergey

AU - Kugel, Kliment

N1 - The derivation of two-orbital model (Section 3) and analysis of its application to perovskites (Section 5) were supported by the Russian Science Foundation via project RSF 23-42-00069. General derivation of effective Hamiltonian (Section 4) was funded by the program “Quantum ” No. 122021000038-7.

PY - 2023/12/1

Y1 - 2023/12/1

N2 - We present a detailed derivation of the effective Hamiltonian for a strongly correlated electron system involving both orbital and spin degrees of freedom. This problem is relevant to a wide class of materials containing ions with the orbitally degenerate ground state (Jahn–Teller ions). We treat in detail the case of double degenerate orbitals, obtain the Kugel–Khomskii model, and then pass to a more general multiorbital case. Based on the derived Hamiltonians, we analyze possible spin and orbital configurations, which can be rather nontrivial, especially in the multiorbital case. A special emphasis is put on to a specific example of the square lattice of Jahn–Teller ions typical of layered perovskites.

AB - We present a detailed derivation of the effective Hamiltonian for a strongly correlated electron system involving both orbital and spin degrees of freedom. This problem is relevant to a wide class of materials containing ions with the orbitally degenerate ground state (Jahn–Teller ions). We treat in detail the case of double degenerate orbitals, obtain the Kugel–Khomskii model, and then pass to a more general multiorbital case. Based on the derived Hamiltonians, we analyze possible spin and orbital configurations, which can be rather nontrivial, especially in the multiorbital case. A special emphasis is put on to a specific example of the square lattice of Jahn–Teller ions typical of layered perovskites.

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85173728827

UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=001149824000001

U2 - 10.1016/j.jmmm.2023.171315

DO - 10.1016/j.jmmm.2023.171315

M3 - Article

VL - 587

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

M1 - 171315

ER -

ID: 47875679