| 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, vol. 105, No 2, p. 027204-1 - 027204-4, 4 pp. ISSN 0031-9007. 2010. |
Other formats:
BibTeX
LaTeX
RIS
@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, vol.~105, No~2, p.~027204-1 - 027204-4, 4 pp. ISSN~0031-9007. 2010.
|
