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arXiv 1412.1968cond-mat.supr-concond-mat.mtrl-sci
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Li掺杂石墨烯的应变增强超导电性

Strain Enhanced Superconductivity in Li-Doped Graphene

Jelena Pešić, Radoš Gajić, Kurt Hingerl, Milivoj Belić

摘要:

我们提出了一种新的方法来提高电子-声子耦合常数和临界超导温度的石墨烯,显着超过所有报道的值。利用密度泛函理论,探讨了拉伸双轴应变对锂嵌入石墨烯的应用效应。与非应变锂插层石墨烯相比,吸附原子和应变的存在这两种效应一起触发临界温度的增强,高达300\%。

英文摘要:

We present a new way to enhance the electron-phonon coupling constant and the critical superconducting temperature of graphene, significantly beyond all reported values. Using density functional theory, we explore the application effects of the tensile biaxial strain on the lithium intercalated graphene. Both effects together, the presence of adatom and the strain, trigger enhancement of critical temperature, up to 300\%, compared to non-strained lithium intercalated graphene.

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