| Texto completo | |
| Autor(es): |
Rodriguez-Lopez, Pablo
[1, 2, 3]
;
Popescu, Adrian
[4]
;
Fialkovsky, Ignat
[5]
;
Khusnutdinov, Nail
[5, 6]
;
Woods, Lilia M.
[4]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Rey Juan Carlos, Area Electromagnetismo, Tulipan S-N, Madrid 28933 - Spain
[2] CSIC, Inst Ciencia Mat Madrid ICMM, Mat Sci Factory, Sor Juana Ines Cruz 3, Madrid 28049 - Spain
[3] GISC Grp Interdisciplinar Sistemas Complejos, Madrid 28040 - Spain
[4] Univ S Florida, Dept Phys, Tampa, FL 33620 - USA
[5] Univ Fed ABC, Ctr Matemat Comp & Cognicao, BR-09210170 Santo Andre, SP - Brazil
[6] Kazan Fed Univ, Reg Sci & Educ Math Ctr, Kremlevskaya 18, Kazan 420008 - Russia
Número total de Afiliações: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | COMMUNICATIONS MATERIALS; v. 1, n. 1 MAR 26 2020. |
| Citações Web of Science: | 3 |
| Resumo | |
The Casimir interaction, induced by electromagnetic fluctuations between objects, is strongly dependent upon the electronic and optical properties of the materials making up the objects. Here we investigate this ubiquitous interaction between semi-infinite spaces of topologically nontrivial Weyl semimetals. A comprehensive examination of all components of the bulk conductivity tensor and the surface conductivity due to the Fermi arc states in real and imaginary frequency domains is presented using the Kubo formalism for materials with different degree of tilting of their linear energy cones. The Casimir energy is calculated using a generalized Lifshitz approach, for which electromagnetic boundary conditions for anisotropic materials were derived and used. We find that the interaction between Weyl semimetals is metallic-like and its magnitude and characteristic distance dependence can be modified by the degree of tilting and chemical potential. The nontrivial topology plays a secondary role in the interaction and thermal fluctuations are expected to have similar effects as in metallic systems. The ubiquitous Casimir interaction arises from electromagnetic fluctuations exchanged between objects. Here, by determining the optical conductivity components for type I and II Weyl semimetals, it is found that the Casimir interaction has strong similarities to metals, while the nontrivial topology plays a secondary role. (AU) | |
| Processo FAPESP: | 19/10719-9 - Os efeitos Casimir e Casimir--Polder para semimetais de Weyl e átomos anisotrópicos |
| Beneficiário: | Nail Khusnutdinov |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/50294-1 - Quantum field theory in Dirac materials |
| Beneficiário: | Dmitry Vasilevich |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 16/03319-6 - Métodos não perturbativos em teoria quântica e em TQC e aplicações deles aos problemas de física atuais |
| Beneficiário: | Dmitri Maximovitch Guitman |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |