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Universal absorption of two-dimensional systems

Stauber, T., Noriega-Pérez, D. and Schliemann, John (2015) Universal absorption of two-dimensional systems. Phys. Rev. B 91, p. 115407.

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Other URL: http://journals.aps.org/prb/pdf/10.1103/PhysRevB.91.115407


Abstract

We discuss the optical conductivity of several noninteracting two-dimensional semiconducting systems focusing on gapped Dirac and Schrödinger fermions as well as on a system mixing these two types. Close to the band gap, we can define a universal optical conductivity quantum of σ0=116e2ℏ for the pure systems. The effective optical conductivity then depends on the degeneracy factors gs (spin) and ...

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Item type:Article
Date:5 March 2015
Institutions:Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group John Schliemann
Projects:MINECO, GRK 1570, Elektronische Eigenschaften von Nanostrukturen auf Kohlenstoff-Basis
Identification Number:
ValueType
10.1103/PhysRevB.91.115407DOI
Dewey Decimal Classification:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:32232
Owner only: item control page

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