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Title: Temperature effect on plasmons in bilayer graphene

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.
Authors:
;  [1] ;  [2] ;  [3]
  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)
Publication Date:
OSTI Identifier:
22490237
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DAMPING; DOPED MATERIALS; ELECTRON GAS; GRAPHENE; LAYERS; PLASMONS; RANDOM PHASE APPROXIMATION; TEMPERATURE DEPENDENCE