Electron pairing by remote-phonon scattering in oxide-supported graphene

Shin Donghan; Fischetti Massimo V; Demkov Alexander A.

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Electron pairing by remote-phonon scattering in oxide-supported graphene

机译：电子对通过氧化物支撑的石墨烯散射散射

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Using first-principles calculations we have previously shown that placing graphene on a (111)-oriented perovskite SrTiO3 (STO) surface provides a possible doping mechanism [D. Shin and A. A. Demkov, Phys. Rev. B 97, 075423 (2018)]. Further theoretical analysis presented here suggests that coupling of electrons in graphene to interfacial hybrid plasmon/optical modes via remote-phonon scattering may result in an effective attractive electron-electron interaction that, in turn, could lead to electron pairing and superconductivity. Specifically, we consider top-gated graphene supported by STO. Using the full dynamic polarizability within the random phase approximation for the entire system (including the hybrid modes arising from the coupling of the graphene plasmons to the optical phonons of the STO substrate and gate insulator), we estimate the superconducting transition temperature in the strong-coupling limit.

机译：使用先前所示的第一原理计算，我们已经表明将石墨烯放在（111） - 植物的钙钛矿SRTIO3（STO）表面上提供了一种可能的掺杂机制[D. Shin和A. A. Demkov，Phy。 Rev. B 97,075423（2018）]。这里提出的进一步的理论分析表明，通过远程声子散射将电子以石墨烯的耦合到界面杂交等离子体/光学模式可能导致有效的吸引电子相互作用，又可以导致电子配对和超导性。具体而言，我们考虑Sto支持的顶部门标。在整个系统的随机相位近似内使用全动态极化性（包括从石墨烯等离子体的耦合到STO基板和栅极绝缘体的光学声子而产生的混合模式），我们估计强 - 的超导转变温度耦合限制。

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《Physical review》 |2019年第12期|125417.1-125417.6|共6页
作者
Shin Donghan; Fischetti Massimo V; Demkov Alexander A.;
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Univ Texas Austin Dept Phys Austin TX 78712 USA;

Univ Texas Dallas Dept Mat Sci & Engn Richardson TX 75080 USA;

Univ Texas Austin Dept Phys Austin TX 78712 USA;

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1. Electron pairing by remote-phonon scattering in oxide-supported graphene [J] . Shin Donghan, Fischetti Massimo V, Demkov Alexander A. Physical review, B . 2019,第12期

机译：电子对通过氧化物支撑的石墨烯散射散射
2. Reduced graphene oxide-supported aggregates of CuInS2 quantum dots as an effective hybrid electron acceptor for polymer-based solar cells [J] . Meng Weili, Zhou Xun, Qiu Zeliang, Carbon: An International Journal Sponsored by the American Carbon Society . 2016,第Null期

机译：还原的氧化石墨烯负载的CuInS2量子点聚集体，作为聚合物基太阳能电池的有效杂化电子受体
3. Reduced graphene oxide-supported aggregates of CuInS2 quantum dots as an effective hybrid electron acceptor for polymer-based solar cells [J] . Meng Weili, Zhou Xun, Qiu Zeliang, Carbon: An International Journal Sponsored by the American Carbon Society . 2016,第Null期

机译：还原的氧化石墨烯负载的CuInS2量子点聚集体，作为聚合物基太阳能电池的有效杂化电子受体
4. Failure of Friedel’s Law in Electron Diffraction Scattering in Bilayer Graphene and Graphene with Defects [C] . Hwang Su Kim International Metallographic Society Annual meeting;Microscopy Society of America Annual Meeting;Microanalysis Society Annual meeting . 2011

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6. Atomistic Band-Structure Computation for Investigating Coulomb Dephasing and Impurity Scattering Rates of Electrons in Graphene [O] . Thi-Nga Do, Danhong Huang, Po-Hsin Shih, 2021

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7. Edge scattering of electrons in graphene: Boltzmann equation approach to the transport in graphene nanoribbons and nanodisks [O] . Dugaev V.K., Katsnelson M.I. 2013

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Electron pairing by remote-phonon scattering in oxide-supported graphene

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