CHALOUPKA, Jiří, George JACKELI and Giniyat KHALIULLIN. Kitaev-Heisenberg Model on a Honeycomb Lattice: Possible Exotic Phases in Iridium Oxides A2IrO3. Physical Review Letters. USA: The Americal Physical Society, 2010, vol. 105, No 2, p. 027204-1 - 027204-4, 4 pp. ISSN 0031-9007. |
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@article{891069, author = {Chaloupka, Jiří and Jackeli, George and Khaliullin, Giniyat}, article_location = {USA}, article_number = {2}, keywords = {magnetic order; spin systems; iridates}, language = {eng}, issn = {0031-9007}, journal = {Physical Review Letters}, title = {Kitaev-Heisenberg Model on a Honeycomb Lattice: Possible Exotic Phases in Iridium Oxides A2IrO3}, url = {http://prl.aps.org/abstract/PRL/v105/i2/e027204}, volume = {105}, year = {2010} }
TY - JOUR ID - 891069 AU - Chaloupka, Jiří - Jackeli, George - Khaliullin, Giniyat PY - 2010 TI - Kitaev-Heisenberg Model on a Honeycomb Lattice: Possible Exotic Phases in Iridium Oxides A2IrO3 JF - Physical Review Letters VL - 105 IS - 2 SP - 027204-1 - 027204-4 EP - 027204-1 - 027204-4 PB - The Americal Physical Society SN - 00319007 KW - magnetic order KW - spin systems KW - iridates UR - http://prl.aps.org/abstract/PRL/v105/i2/e027204 N2 - We derive and study a spin one-half Hamiltonian on a honeycomb lattice describing the exchange interactions between Ir4+ ions in a family of layered iridates A2IrO3 (A=Li,Na). Depending on the microscopic parameters, the Hamiltonian interpolates between the Heisenberg and exactly solvable Kitaev models. Exact diagonalization and a complementary spin-wave analysis reveal the presence of an extended spin-liquid phase near the Kitaev limit and a conventional Néel state close to the Heisenberg limit. The two phases are separated by an unusual stripy antiferromagnetic state, which is the exact ground state of the model at the midpoint between two limits. ER -
CHALOUPKA, Jiří, George JACKELI and Giniyat KHALIULLIN. Kitaev-Heisenberg Model on a Honeycomb Lattice: Possible Exotic Phases in Iridium Oxides A2IrO3. \textit{Physical Review Letters}. USA: The Americal Physical Society, 2010, vol.~105, No~2, p.~027204-1 - 027204-4, 4 pp. ISSN~0031-9007.
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