Dynamical properties of photogenerated polarons in one-dimensional dimerized Mott Insulators
Dynamical properties of photogenerated polarons in one-dimensional dimerized Mott Insulators
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一维二聚莫特绝缘体中光生极化子的动力学特性
DOI：
10.1140/epjb/e2012-30690-0
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
N. Maeshima and K. I. Hino
中科院分区：
文献类型：
--
作者：
K. Moriya;N. Maeshima and K. I. Hino
利用密度矩阵重整化群方法研究了一维Peierls-Hubbard模型中经典晶格畸变下光生电子-晶格耦合态极化子的物理性质.数值计算结果表明，在大的在位库仑相互作用下，极化子的光学响应谱中出现了新的带隙中峰。这些中间带隙峰起源于极化子中二聚体内的电荷转移激发。
We study physical properties of photogenerated electron-lattice coupled states, polarons, in one-dimensional (1D) Peierls-Hubbard model with classical lattice distortion by means of the density matrix renormalization group method. The numerical results show novel midgap peaks in optical response spectra of polarons for large on-site Coulomb interactionU. These midgap peaks originate from charge-transfer excitations within the dimer in polarons.