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Optical field modulation on the group delay of chiral tunneling in graphene.
- Source :
-
New Journal of Physics . Jan2012, Vol. 14 Issue 1, p1-7. 7p. - Publication Year :
- 2012
-
Abstract
- The influences of optical fields on the group delay of chiral tunneling in graphene are investigated in real time using the finite-difference time-domain method. The group delay of tunneling electrons irradiated by an optical field is significantly different from that observed in traditional quantum tunneling. We found that when the barrier width increases, the group delay becomes constant for the reflected wave packet, but increases linearly for the transmitted wave packet. This peculiar tunneling effect can be attributed to current leakage in a time-dependent barrier generated via the optical Stark effect. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CHIRALITY
*GRAPHENE
*WAVE packets
*FINITE differences
*QUANTUM tunneling
Subjects
Details
- Language :
- English
- ISSN :
- 13672630
- Volume :
- 14
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- New Journal of Physics
- Publication Type :
- Academic Journal
- Accession number :
- 72445349
- Full Text :
- https://doi.org/10.1088/1367-2630/14/1/013012