prikaz prve stranice dokumenta Carrier concentrations and optical conductivity of a band-inverted semimetal in two and three dimensions
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Scientific paper - Original scientific paper
Carrier concentrations and optical conductivity of a band-inverted semimetal in two and three dimensions
Physical Review B, 104 (2021), 7; 075108. https://doi.org/10.1103/PhysRevB.104.075108
Rukelj, Zoran; Akrap, Ana

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Rukelj, Z. & Akrap, A. (2021). Carrier concentrations and optical conductivity of a band-inverted semimetal in two and three dimensions. Physical Review B, 104. (7). doi: 10.1103/PhysRevB.104.075108

Rukelj, Zoran and Ana Akrap. "Carrier concentrations and optical conductivity of a band-inverted semimetal in two and three dimensions." Physical Review B, vol. 104, no. 7, 2021. https://doi.org/10.1103/PhysRevB.104.075108

Rukelj, Zoran and Ana Akrap. "Carrier concentrations and optical conductivity of a band-inverted semimetal in two and three dimensions." Physical Review B 104, no. 7 (2021). https://doi.org/10.1103/PhysRevB.104.075108

Rukelj, Z. and Akrap, A. (2021) 'Carrier concentrations and optical conductivity of a band-inverted semimetal in two and three dimensions', Physical Review B, 104(7). doi: 10.1103/PhysRevB.104.075108

Rukelj Z, Akrap A. Carrier concentrations and optical conductivity of a band-inverted semimetal in two and three dimensions. Physical Review B [Internet]. 2021 [cited 2024 November 27];104(7). doi: 10.1103/PhysRevB.104.075108

Z. Rukelj and A. Akrap, "Carrier concentrations and optical conductivity of a band-inverted semimetal in two and three dimensions", Physical Review B, vol. 104, no. 7, 2021. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:846384. [Accessed: 27 November 2024]

Metadata
Title (english)Carrier concentrations and optical conductivity of a band-inverted semimetal in two and three dimensions
AuthorZoran Rukelj
AuthorAna Akrap
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
Here we study the single-particle, electronic transport, and optical properties of a gapped system described by a simple two-band Hamiltonian with inverted valence bands. We analyze its properties in the three-dimensional (3D) and the two-dimensional (2D) case. The insulating phase changes into a metallic phase when the band gap is set to zero. The metallic phase in the 3D case is characterized by a nodal surface. This nodal surface is equivalent to a nodal ring in two dimensions. Within a simple theoretical framework, we calculate the density of states, the total and effective charge carrier concentration, the Hall concentration, and the Hall coefficient, for both 2D and 3D cases. The main result is that the three concentrations always differ from one another in the present model. These concentrations can then be used to resolve the nature of the electronic ground state. Similarly, the optical conductivity is calculated and discussed for the insulating phase. We show that there are no optical excitations in the metallic phase. Finally, we compare the calculated optical conductivity with the rule-of-thumb derivation using the joint density of states.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review B
Numberingvol. 104, no. 7, 075108
p-ISSN2469-9950
e-ISSN2469-9969
DOIhttps://doi.org/10.1103/PhysRevB.104.075108
URN:NBNurn:nbn:hr:217:846384
Publication2021
Document URLhttps://link.aps.org/doi/10.1103/PhysRevB.104.075108
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© 2021 American Physical Society. Received 26 April 2021; Accepted 21 July 2021; Published 6 August 2021.
Created on2023-08-06 19:33:50