Mean Field Superconductivity Approach in Two Dimensions

被引：14
作者：
Garcia, N. [1 ,2 ]
Esquinazi, P. [1 ]
机构：
[1] Univ Leipzig, Inst Expt Phys 2, Div Superconduct & Magnetism, D-04103 Leipzig, Germany
[2] CSIC, Lab Fis Sistemas Pequenos & Nanotecnol, E-28006 Madrid, Spain
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2009年 / 22卷 / 05期
关键词：
BCS superconductivity; Two-dimensions; Graphite; Hydrogen influence; GRAPHITE; STATE; FERROMAGNETISM;
D O I：
10.1007/s10948-009-0485-6
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Within the BCS theory of superconductivity we calculate the superconducting gap at a zero-temperature for metallic hydrogen-graphene system in order to estimate the superconducting critical temperature of quasi-two-dimensional highly oriented pyrolytic graphite. The obtained results are given as a function of the hydrogen-induced density of carriers n and their effective mass m (a <dagger) . The obtained gap shows a Maxwell-like distribution with a maximum of similar to 60 K at n similar to 3x10(14) cm(-2) and m (a <dagger) /m=1. The theoretical results are discussed taking into account recent experimental evidence for granular superconductivity in graphite.
引用
收藏
页码：439 / 444
页数：6
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