Time dependent behavior of a localized electron at a heterojunction boundary of graphene | Zendy

Min Seok Jang | Zendy; Hyungjun Kim | Zendy; Harry A. Atwater | Zendy; William A. Goddard | Zendy

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Time dependent behavior of a localized electron at a heterojunction boundary of graphene

Author(s) -

Min Seok Jang,

Hyungjun Kim,

Harry A. Atwater,

William A. Goddard

Publication year - 2010

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3454909

Subject(s) - graphene , quasiparticle , electron , wave packet , finite difference time domain method , condensed matter physics , heterojunction , boundary value problem , physics , materials science , optics , quantum mechanics , superconductivity

We develop a finite-difference time-domain(FDTD) method for simulating the dynamics of graphene electrons, denoted GraFDTD. We then use GraFDTD to study the temporal behavior of a single localized electron wave packet, showing that it exhibits optical-like dynamics including the Goos–Hanchen effect [F. Goos and H. Hanchen, Ann. Phys.436, 333 (1947)] at a heterojunction, but the behavior is quantitatively different than for electromagnetic waves. This suggests issues that must be addressed in designing graphene-based electronic devices analogous to optical devices. GraFDTD should be useful for studying such complex time-dependent behavior of a quasiparticle in graphene.

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