Report
Spin-orbital state induced by strong spin-orbit coupling
| العنوان: | Spin-orbital state induced by strong spin-orbit coupling |
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| المؤلفون: | Onishi, Hiroaki |
| المصدر: | J. Phys.: Conf. Ser. 391, 012102 (2012) |
| سنة النشر: | 2013 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | To clarify a crucial role of a spin-orbit coupling in the emergence of novel spin-orbital states in $5d$-electron compounds such as Sr$_{2}$IrO$_{4}$, we investigate ground state properties of a $t_{\rm 2g}$-orbital Hubbard model on a square lattice by Lanczos diagonalization. In the absence of the spin-orbit coupling, the ground state is spin singlet. When the spin-orbit coupling is strong enough, the ground state turns into a weak ferromagnetic state. The weak ferromagnetic state is a singlet state in terms of an effective total angular momentum. Regarding the orbital state, we find the so-called complex orbital state, in which real $xy$, $yz$, and $zx$ orbital states are mixed with complex coefficients. Comment: 4 pages, 3 figures, Proceedings of SCES2011 (August 29 - September 3, 2011, Cambridge, UK) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1088/1742-6596/391/1/012102 |
| URL الوصول: | http://arxiv.org/abs/1310.8016 |
| رقم الانضمام: | edsarx.1310.8016 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1088/1742-6596/391/1/012102 |
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