skip to main content

Title: Dynamic optical properties in graphene: Length versus velocity gauge

The dynamic optical properties of graphene are theoretically investigated in both length gauge and velocity gauge in the presence of ultrafast optical radiation field. The two gauges present different results of dynamic photo-induced carriers and optical conductance due to distinct dependencies on electric field and non-resonant optical absorption, while the two gauges give identical results in the steady state time. It shows that the choice of gauge affects evidently the dynamic optical properties of graphene. The velocity gauge represents an outcome of a real physical experiment.
Authors:
;  [1] ;  [2] ;  [3]
  1. Department of Physics, China University of Mining and Technology, Xuzhou 221116 (China)
  2. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China)
  3. (China)
Publication Date:
OSTI Identifier:
22278073
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 6; Other Information: (c) 2014 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; ABSORPTION; CHARGE CARRIERS; ELECTRIC FIELDS; GRAPHENE; LENGTH; OPACITY; SPECTRAL REFLECTANCE; STEADY-STATE CONDITIONS; VELOCITY