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首页> 外文期刊>Synthetic Metals >EFFECT OF QUANTUM PHONON FLUCTUATIONS ON OPTICAL PROPERTIES OF FINITE SEMICONDUCTING CHAINS - ADIABATIC AND NONADIABATIC RESULTS
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EFFECT OF QUANTUM PHONON FLUCTUATIONS ON OPTICAL PROPERTIES OF FINITE SEMICONDUCTING CHAINS - ADIABATIC AND NONADIABATIC RESULTS

机译:量子声子涨落对有限导电链光学性质的影响-绝热和非绝热结果

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摘要

We investigate the optical properties of one-dimensional semiconducting chains where the electron-phonon coupling represents tile dominant interaction. The isolated monomers possess two electronic orbitals, the lowest being occupied. In addition to hopping, two phonon modes couple to and mix different electronic states. We compute the optical response exactly, by Lanczos algorithm, and compare it to that deduced approximately, within the adiabatic ansatz (i. e. factorizing the wave function of the electron-phonon system). On this basis we discuss the validity of this approximation. [References: 7]
机译:我们调查一维半导体链的光学性质,其中电子-声子耦合表示瓷砖占主导地位的相互作用。分离的单体具有两个电子轨道,最低的被占据。除了跳跃之外,两种声子模式还耦合并混合了不同的电子状态。我们通过Lanczos算法精确计算光学响应,并将其与绝热ansatz(即分解电子-声子系统的波函​​数)内近似推导的响应进行比较。在此基础上,我们讨论了这种近似的有效性。 [参考:7]

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