How Many Surface Modes Does One See on the Boundary of a Dirac Material?

Autor(es)

Kurkov, Maxim ^{[1, 2]} ; Vassilevich, Dmitri ^{[3, 4]}

Afiliação do(s) autor(es)

^[1] Ist Nazl Fis Nucl, Sez Napoli, Via Cintia, I-80126 Naples - Italy

^[2] Univ Napoli Federico II, Dipartimento Fis Ettore Pancini, Complesso Univ Monte S Angelo, Via Cintia, I-80126 Naples - Italy

^[3] Tomsk State Univ, Phys Dept, Tomsk 634050 - Russia

^[4] Univ Fed ABC, CMCC, BR-0921080 Santo Andre, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physical Review Letters; v. 124, n. 17 APR 29 2020.
• Citações Web of Science: 0

Resumo

We present full expressions for the surface part of polarization tensor of a Dirac fermion confined in a half-space in 3 + 1 dimensions. We compare this tensor to the polarization tensor of eventual surface mode (which is a 2 + 1 dimensional Dirac fermion) and find essential differences in the conductivities in both Hall and normal sectors. Thus, the interaction with electromagnetic field near the boundary differs significantly in the full model and in the effective theory for the surface mode. (AU)

• 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