Zigzag Magnetic Order in the Iridium Oxide Na2IrO3

CHALOUPKA, Jiří, George JACKELI and Giniyat KHALIULLIN. Zigzag Magnetic Order in the Iridium Oxide Na2IrO3. Physical Review Letters. USA: The Americal Physical Society, 2013, vol. 110, No 9, p. "097204-1"-"097204-5", 5 pp. ISSN 0031-9007. Available from: https://dx.doi.org/10.1103/PhysRevLett.110.097204.

Basic information

• Original name: Zigzag Magnetic Order in the Iridium Oxide Na2IrO3
• Authors: CHALOUPKA, Jiří (203 Czech Republic, guarantor, belonging to the institution), George JACKELI (268 Georgia) and Giniyat KHALIULLIN (643 Russian Federation).
• Edition: Physical Review Letters, USA, The Americal Physical Society, 2013, 0031-9007.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10302 Condensed matter physics
• Country of publisher: United States of America
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 7.728
• RIV identification code: RIV/00216224:14740/13:00068177
• Organization unit: Central European Institute of Technology
• Doi: http://dx.doi.org/10.1103/PhysRevLett.110.097204
• UT WoS: 000315488300015
• Keywords in English: layered iridates; quantum magnetism; spin-orbital entanglement
• Tags: rivok
• Tags: International impact, Reviewed

Abstract

We explore the phase diagram of spin-orbit Mott insulators on a honeycomb lattice, within the Kitaev-Heisenberg model extended to its full parameter space. Zigzag-type magnetic order is found to occupy a large part of the phase diagram of the model, and its physical origin is explained as due to interorbital t2g-eg hopping. Magnetic susceptibility, spin wave spectra, and zigzag order parameter are calculated and compared to the experimental data, obtaining thereby the spin coupling constants in Na2IrO3 and Li2IrO3.

Abstract (in Czech)

Zkoumáme fázový diagram Mottových izolantů se silnou spin-orbitální vazbou na voštinové mřížce s využitím Kitaevova-Heisenbergova modelu rozšířeného na celý prostor parametrů. Magnetické uspořádání typu zigzag zabírá značnou část fázového diagramu. Jeho fyzikální původ spočívá v meziorbitalových t2g-eg přeskocích. Vypočtena a porovnána s experimentem jsou magnetická susceptibilita, spektrum spinových vln a parametr uspořádání. Takto jsou získány hodnoty vazebných konstant interakce mezi spiny v Na2IrO3 a Li2IrO3.

Links

• ED1.1.00/02.0068, research and development project: Name: CEITEC - central european institute of technology
• 286154, interní kód MU: Name: SYLICA - Synergies of Life and Material Sciences to Create a New Future (Acronym: SYLICA)

Investor: European Union, Capacities