Surface polaron formation in the Holstein model

Reza Nourafkan; Massimo Capone; Nasser Nafari

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Surface polaron formation in the Holstein model

机译：荷斯坦模型中的表面极化子形成

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The effect of a solid-vacuum interface on the properties of a strongly coupled electron-phonon system is analyzed using dynamical mean-field theory to solve the Holstein model in a semi-infinite cubic lattice. Polaron formation is found to occur more easily, i.e., for a weaker electron-phonon coupling, on the surface than in the bulk. On the other hand, the metal-insulator transition associated with the binding of polarons takes place at a unique critical strength in the bulk and at the surface.

机译：利用动力学平均场理论分析了半真空立方晶格中的荷斯坦模型，分析了固-真空界面对强耦合电子-声子系统性质的影响。发现极化子的形成比在主体中更容易在表面上发生，即，对于较弱的电子-声子耦合。另一方面，与极化子的结合有关的金属-绝缘体转变在主体和表面上以独特的临界强度发生。

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来源
《Physical review》 |2009年第15期|155130.1-155130.6|共6页
作者
Reza Nourafkan; Massimo Capone; Nasser Nafari;
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作者单位

Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran, Iran;

SMC, CNR-INFM and Dipartimento di Fisica, Universita Sapienza, P.le Aldo Mow 2, I-00185 Roma, Italy;

Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran, Iran;

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正文语种 eng
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metal-insulator transitions and other electronic transitions; electron states at surfaces and interfaces; self-trapped or small polarons;

机译：金属-绝缘体过渡和其他电子过渡;表面和界面的电子态;自陷或小极化子;

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专利

1. SMALL-POLARON FORMATION AND OPTICAL ABSORPTION IN SU-SCHRIEFFER-HEEGER AND HOLSTEIN MODELS [J] . Capone M., Grilli M., Stephan W. Physical Review, B. Condensed Matter . 1997,第8期

机译：SU-SRIEFERFER-HEEGER和HOLSTEIN模型中的小极化形成和光吸收
2. Field-induced polaron formation in the Holstein-Hubbard model [J] . Werner Philipp, Eckstein Martin EPL . 2015,第3a4期

机译：荷斯坦-哈伯德模型中场致极化子的形成
3. Heavy-electron formation and polaron-bipolaron transition in the anharmonic Holstein model [J] . Fuse T., Ono Y., Hotta T. Journal of the Physical Society of Japan . 2012,第4期

机译：非谐Holstein模型中的重电子形成和极化子-双极化子跃迁
4. Holstein Polarons and Triplet Bipolarons with NNN Hopping [C] . Monodeep Chakraborty, A. Taraphder, Mona Berciu DAE Solid State Physics Symposium . 2017

机译：Holstein的优良子和三联双极与NNN跳跃
5. Statics and dynamics of the Holstein and Jahn-Teller polarons. [D] . Ku, Li-Chung. 2003

机译：Holstein和Jahn-Teller极化子的静力学和动力学。
6. Surface electron dynamics in hematite (α-Fe2O3): correlation between ultrafast surface electron trapping and small polaron formation [O] . Jakub Husek, Anthony Cirri, Somnath Biswas, 2017

机译：赤铁矿（α-Fe2O3）中的表面电子动力学：超快表面电子俘获与小极化子形成之间的相关性
7. Surface polaron formation in the Holstein model [O] . Nourafkan R, Capone M, Nafari N 2009

机译：荷斯坦模型中的表面极化子形成

Surface polaron formation in the Holstein model

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