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http://hdl.handle.net/10119/10844
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Title: | Anisotropic exchange interactions of spin-orbit-integrated states in Sr_2IrO_4 |
Authors: | Jin, Hosub Jeong, Hogyun Ozaki, Taisuke Yu, Jaejun |
Issue Date: | 2009-08-13 |
Publisher: | American Physical Society |
Magazine name: | Physical Review B |
Volume: | 80 |
Number: | 7 |
Start page: | 075112-1 |
End page: | 075112-5 |
DOI: | 10.1103/PhysRevB.80.075112 |
Abstract: | We present a microscopic model for the anisotropic exchange interactions in Sr_2IrO_4. A direct construction of Wannier functions from first-principles calculations proves the j_<eff>=1/2 character of the spin-orbit integrated states at the Fermi level. An effective j_<eff>-spin Hamiltonian explains the observed weak ferromagnetism and anisotropy of antiferromagnetically ordered magnetic state, which arise naturally from the j_<eff>=1/2 state with a rotation of IrO_6 octahedra. It is suggested that Sr_2IrO_4 is a unique class of materials with effective exchange interactions in the spin-orbital Hilbert space. |
Rights: | Hosub Jin, Hogyun Jeong, Taisuke Ozaki, and Jaejun Yu, Physical Review B, 80(7), 2009, 075112-1-075112-5. Copyright 2009 by the American Physical Society. http://dx.doi.org/10.1103/PhysRevB.80.075112 |
URI: | http://hdl.handle.net/10119/10844 |
Material Type: | publisher |
Appears in Collections: | z10-10-1. 雑誌掲載論文 (Journal Articles)
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