Photoelectric Phenomena in Graphene Induced by Terahertz Laser Radiation

by Christoph Johannes Drexler

Book cover: Photoelectric Phenomena in Graphene Induced by Terahertz Laser Radiation

Extent: 120 pages

Publisher: Schnell & Steiner

Subjects: Technical Sciences: Computer Science, Engineering, IT, & Math

Series: Dissertationsreihe / Physik

Series volume number: 43

Language: English

Paperback (Published)

(August 2014)

ISBN: 9783868451160

6.65 x 9.45 inches

Price: $33.00

Out of stock

The investigation of photoelectric phenomena in the terahertz frequency range is a powerful tool to study nonequilibrium processes in low-dimensional structures. In this work, non-linear high frequency transport phenomena in graphene driven by the free-carrier absorption of electromagnetic radiation are explored. It is demonstrated that in the presence of adatoms and/or a substrate, as well as in the vicinity of graphene edges the carriers exhibit a directed motion in response to the alternating electric field of the terahertz radiation. Moreover, it is sown that these photoelectric phenomena can be giantly enhanced if graphene is deposited on a substrate with a negative dielectric constant. Novel models of the photocurrent generation are developed to describe the nonequilibrium processes in the purest two-dimensional material. The experiments together with the theoretical considerations give access to fundamental properties of graphene.

  • By (author) Christoph Johannes Drexler