Temperature effect on plasmons in bilayer graphene

Journal Article · Wed Jun 24 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4917672· OSTI ID:22490237

Sharma, A. C. ^[1]; Ashraf, S. S. Z. ^[2]; Ambavale, S. K. ^[3]

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1. Physics Department, Faculty of Science, The M.S. University of Baroda, Vadodara-390002, Gujarat (India)
2. Physics Department, Faculty of Science, Aligarh Muslim University, Aligarh-202002, Uttar Pradesh (India)
3. Vishwakarma Government Engineering College Chandkheda, Ahmedabad-382424, Gujarat (India)

We have theoretically investigated the plasmon dispersion and damping rate of doped bilayer graphene (BLG) at finite temperatures within the random phase approximation. Our computed results on plasmon dispersion show that plasmon frequency enhances with increasing temperatures in contrast to single layer graphene where it is suppressed. This can be attributed to the fact that the dynamic response of the electron gas or screening in bilayer graphene is different from that of single layer graphene. Further the temperature effect on damping rate is also discussed.

• OSTI ID: 22490237
• Journal Information: AIP Conference Proceedings, Vol. 1665, Issue 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DAMPING
DOPED MATERIALS
ELECTRON GAS
GRAPHENE
LAYERS
PLASMONS
RANDOM PHASE APPROXIMATION
TEMPERATURE DEPENDENCE