A Caltech Library Service

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

Jang, Min Seok and Kim, Hyungjun and Atwater, Harry A. and Goddard, William A., III (2010) Time dependent behavior of a localized electron at a heterojunction boundary of graphene. Applied Physics Letters, 97 (4). Art. No. 043504. ISSN 0003-6951. doi:10.1063/1.3454909.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


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–Hänchen effect [ F. Goos and H. Hänchen, 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.

Item Type:Article
Related URLs:
URLURL TypeDescription
Jang, Min Seok0000-0002-5683-1925
Kim, Hyungjun0000-0001-8261-9381
Atwater, Harry A.0000-0001-9435-0201
Goddard, William A., III0000-0003-0097-5716
Additional Information:© 2010 American Institute of Physics. Received 11 February 2010; accepted 25 May 2010; published online 29 July 2010. This work was supported by DOE LMI EFRC under Grant No. DE-SC0001293 (M.S.J. and H.A.A.) and the Functional Engineered Nano Architectronics (FENA) via the Microelectronics Advanced Research Corporation (MARCO) with the prime award (2009–NT-2048) at UCLA (PI Kang Wang). H.J. and W.A.G. also acknowledge support from the WCU programs through NRF of Korea funded by the MEST (Grant No. R31-2008-000-10055-0). Two of the authors (M.S.J. and H.K.) contributed equally to this work.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0001293
Microelectronics Advanced Research Corporation (MARCO)2009-NT-2048
Ministry of Education, Science and Technology (Korea)R31-2008-000-10055-0
Subject Keywords:finite difference time-domain analysis; graphene; localised states; p-n junctions
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Issue or Number:4
Record Number:CaltechAUTHORS:20100907-141554023
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19807
Deposited By: Tony Diaz
Deposited On:15 Sep 2010 21:26
Last Modified:08 Nov 2021 23:55

Repository Staff Only: item control page