Email this article Current–current correlation function in the presence of chemical potential and magnetic field
- Authors: Apresyan E.A.1
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Affiliations:
- Alikhanyan National Scientific Laboratory
- Issue: Vol 52, No 2 (2017)
- Pages: 105-109
- Section: Article
- URL: https://journals.rcsi.science/1068-3372/article/view/228310
- DOI: https://doi.org/10.3103/S1068337217020037
- ID: 228310
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Abstract
A (2+1)-dimensional electronic system is considered, in which the relation between the Green functions and the conductivity is used. A current–current correlation function, Πμν(B), of the fermion system was obtained in the presence of nonquantized fermion magnetic field B, chemical potential η and gap m. Using this function one can obtain an expression for polarization operator calculated without the magnetic field. The result obtained can be applied for graphene.
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About the authors
E. A. Apresyan
Alikhanyan National Scientific Laboratory
Author for correspondence.
Email: elena-apresyan@mail.ru
Armenia, Yerevan
