Model of nonadiabatic-to-adiabatic dynamical quantum phase transition in photoexcited systems
文献类型：期刊论文
| 作者 | Chang, J ; Eremin, I ; Zhao, JZ |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:10页码:104305 |
| 关键词 | ELECTRON-TRANSFER TTF-CA CHARGE MANGANITE LA0.5SR1.5MNO4 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Chang, J (reprint author), Shaanxi Normal Univ, Coll Phys & Informat Technol, Xian 710119, Peoples R China. |
| 英文摘要 | We study the ultrafast dynamic process in photoexcited systems and find that the Franck-Condon or Landau-Zener tunneling between the photoexcited state and the ground state is abruptly blocked with increasing the state coupling from nonadiabatic to adiabatic limits. The blockage of the tunneling inhibits the photoexcited state from decaying into the thermalized state and results in an emergence of a metastable state, which represents an entanglement of electronic states with different electron-phonon coupling strengths. Applying this model to the investigation of photoexcited half-doped manganites, we show that the quantum critical transition is responsible for more than a three-order-of-magnitude difference in the ground-state recovery times following photoirradiation. This model also explains some elusive experimental results, such as photoinduced rearrangement of orbital order by the structural rather than electronic process and the structural bottleneck of a one-quarter period of the Jahn-Teller mode. We demonstrate that in the spin-boson model there exist unexplored regions not covered in the conventional phase diagram. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | Fundamental Research Funds for the Central Universities [GK201402011]; Shaanxi Normal University's seed funds; Mercator Research Center Ruhr; NSFC [11474029] |
| 原文出处 | http://dx.doi.org/10.1103/PhysRevB.90.104305 |
| 语种 | 英语 |
| WOS记录号 | WOS:000343729800002 |
| 公开日期 | 2015-06-03 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15651]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Chang, J,Eremin, I,Zhao, JZ. Model of nonadiabatic-to-adiabatic dynamical quantum phase transition in photoexcited systems[J]. PHYSICAL REVIEW B,2014,90(10):104305. |
| APA | Chang, J,Eremin, I,&Zhao, JZ.(2014).Model of nonadiabatic-to-adiabatic dynamical quantum phase transition in photoexcited systems.PHYSICAL REVIEW B,90(10),104305. |
| MLA | Chang, J,et al."Model of nonadiabatic-to-adiabatic dynamical quantum phase transition in photoexcited systems".PHYSICAL REVIEW B 90.10(2014):104305. |
入库方式： OAI收割
来源：理论物理研究所
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