Mesoscopic conductance fluctuations in graphene

Horsell DW; Savchenko AK; Tikhonenko FVKechedzhi KLerner IVFalko VI

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Mesoscopic conductance fluctuations in graphene

机译：Mesoscopic conductance fluctuations in graphene

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We study fluctuations of the conductance of micron-sized graphene devices as a function of the Fermi energy and magnetic field. The fluctuations are studied in combination with analysis of weak localization which is determined by the same scattering mechanisms. It is shown that the variance of conductance fluctuations depends not only on inelastic scattering that controls dephasing but also on elastic scattering. In particular, contrary to its effect on weak localization, strong intervalley scattering suppresses conductance fluctuations in graphene. The correlation energy, however, is independent of the details of elastic scattering and can be used to determine the electron temperature of graphene structures.

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来源
《Solid State Communications》 |2009年第28期|1041-1045|共5页
作者
Horsell DW; Savchenko AK; Tikhonenko FVKechedzhi KLerner IVFalko VI;
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作者单位

Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England.;

Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England.;

Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England.;

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正文语种英语
中图分类固体物理学;
关键词
Nanostructures; Impurities in semiconductors; Electronic transport; Quantum localization;

Mesoscopic conductance fluctuations in graphene

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