Optical conductivity of black phosphorus with a tunable electronic structure
DC Field | Value | Language |
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dc.contributor.author | Jiho Jang | - |
dc.contributor.author | Seongjin Ahn | - |
dc.contributor.author | Hongki Min | - |
dc.date.available | 2019-11-19T11:37:32Z | - |
dc.date.created | 2019-05-29 | - |
dc.date.issued | 2019-04 | - |
dc.identifier.issn | 2053-1583 | - |
dc.identifier.uri | https://pr.ibs.re.kr/handle/8788114/6532 | - |
dc.description.abstract | © 2019 IOP Publishing Ltd. Black phosphorus (BP) is a two-dimensional layered material composed of phosphorus atoms. Recently, it was demonstrated that external perturbations such as an electric field close the band gap in few-layer BP, and can even induce a band inversion, resulting in an insulator phase with a finite energy gap or a Dirac semimetal phase characterized by two separate Dirac nodes. At the transition between the two phases, a semi-Dirac state appears in which energy disperses linearly along one direction and quadratically along the other. In this work, we study the optical conductivity of few-layer BP using a lattice model and the corresponding continuum model, incorporating the effects of an external electric field and finite temperature. We find that the low-frequency optical conductivity scales a power law that differs depending on the phase, which can be utilized as an experimental signature of few-layer BP in different phases. We also systematically analyze the evolution of the material parameters as the electric field increases, and the consequence on the power-law behavior of the optical conductivity | - |
dc.description.uri | 1 | - |
dc.language | 영어 | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.subject | Black phosphorus | - |
dc.subject | optical conductivity | - |
dc.subject | power-law dependence | - |
dc.title | Optical conductivity of black phosphorus with a tunable electronic structure | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.identifier.wosid | 000460779600002 | - |
dc.identifier.scopusid | 2-s2.0-85065294122 | - |
dc.identifier.rimsid | 68273 | - |
dc.contributor.affiliatedAuthor | Seongjin Ahn | - |
dc.identifier.doi | 10.1088/2053-1583/ab075b | - |
dc.identifier.bibliographicCitation | 2D MATERIALS, v.6, no.2, pp.025029 | - |
dc.citation.title | 2D MATERIALS | - |
dc.citation.volume | 6 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 025029 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | FIELD | - |
dc.subject.keywordPlus | MODULATION | - |
dc.subject.keywordPlus | PHASE | - |
dc.subject.keywordAuthor | black phosphorus | - |
dc.subject.keywordAuthor | optical conductivity | - |
dc.subject.keywordAuthor | power-law dependence | - |