Multi-orbital effects in optical properties of vanadium sesquioxide
Multi-orbital effects in optical properties of vanadium sesquioxide
复制标题
DOI：
10.1088/0953-8984/21/6/064209
复制
发表时间：
2008-11
期刊：
影响因子：
--
通讯作者：
J. Tomczak;S. Biermann
中科院分区：
文献类型：
--
作者：
J. Tomczak;S. Biermann
Vanadium sesquioxide, V2O3, boasts a rich phase diagram whose description necessitates accounting for many-body Coulomb correlations. The spectral properties of this compound have been successfully addressed within dynamical mean field theory to the extent that results of recent angle-resolved photoemission experiments have been correctly predicted. While photoemission spectroscopy probes the occupied part of the one-particle spectrum, optical experiments measure transitions into empty states and thus provide complementary information. In this work, we focus on the optical properties of V2O3 in its paramagnetic phases by employing our recently developed ‘generalized Peierls approach’. We obtain results in overall satisfactory agreement with experiments. Further, we rationalize that the experimentally observed temperature dependence stems from the different coherence scales of the charge carriers involved.
