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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The electromagnetic response of a relativistic Fermi gas at finite temperatures: Applications to condensed-matter systems

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Author(s):
Reyes-Gomez, E. [1] ; Oliveira, L. E. [2] ; de Carvalho, C. A. A. [3, 4]
Total Authors: 3
Affiliation:
[1] Univ Antioquia UdeA, Inst Fis, Calle 70 52-21, Medellin - Colombia
[2] Univ Estadual Campinas UNICAMP, Inst Fis, BR-13083859 Campinas, SP - Brazil
[3] Univ Fed Rio de Janeiro UFRJ, Inst Fis, BR-21945972 Rio De Janeiro, RJ - Brazil
[4] Inmetro, Campus Xerem, BR-25250020 Duque De Caxias, RJ - Brazil
Total Affiliations: 4
Document type: Journal article
Source: EPL; v. 114, n. 1 APR 2016.
Web of Science Citations: 2
Abstract

We investigate the electromagnetic response of a relativistic Fermi gas at finite temperatures. Our theoretical results are first-order in the fine-structure constant. The electromagnetic permittivity and permeability are introduced via general constitutive relations in reciprocal space, and computed for different values of the gas density and temperature. As expected, the electric permittivity of the relativistic Fermi gas is found in good agreement with the Lindhard dielectric function in the low-temperature limit. Applications to condensed-matter physics are briefly discussed. In particular, theoretical results are in good agreement with experimental measurements of the plasmon energy in graphite and tin oxide, as functions of both the temperature and wave vector. We stress that the present electromagnetic response of a relativistic Fermi gas at finite temperatures could be of potential interest in future plasmonic and photonic investigations. Copyright (C) EPLA, 2016 (AU)

FAPESP's process: 13/21320-3 - The physics of novel materials: photonics, photonic band structure, control of photonic band gap in photonic structures, plasmon polaritons, and gap solitons
Grantee:Luiz Eduardo Moreira Carvalho de Oliveira
Support type: Research Grants - Visiting Researcher Grant - International
FAPESP's process: 12/51691-0 - The physics of new materials and semiconductor nanostructures
Grantee:Luiz Eduardo Moreira Carvalho de Oliveira
Support type: Research Projects - Thematic Grants