Negative dynamic conductivity of graphene with optical pumping

V. Ryzhii; M. Ryzhii; T. Otsuji

doi:10.1063/1.2717566

Negative dynamic conductivity of graphene with optical pumping

V. Ryzhii, M. Ryzhii, T. Otsuji

RIEC - Information Communication Platforms Division

The University of Aizu

Research output: Contribution to journal › Article › peer-review

349 Citations (Scopus)

Abstract

We study the dynamic ac conductivity of a nonequilibrium two-dimensional electron-hole system in optically pumped graphene. Considering the contribution of both interband and intraband transitions, we demonstrate that at sufficiently strong pumping the population inversion in graphene can lead to the negative net ac conductivity in the terahertz range of frequencies. This effect might be used in graphene-based coherent sources of terahertz radiation.

Original language	English
Article number	083114
Journal	Journal of Applied Physics
Volume	101
Issue number	8
DOIs	https://doi.org/10.1063/1.2717566
Publication status	Published - 2007

Access to Document

10.1063/1.2717566

Cite this

@article{a5c8dd7771104bbba61eb455e13af5c3,

title = "Negative dynamic conductivity of graphene with optical pumping",

abstract = "We study the dynamic ac conductivity of a nonequilibrium two-dimensional electron-hole system in optically pumped graphene. Considering the contribution of both interband and intraband transitions, we demonstrate that at sufficiently strong pumping the population inversion in graphene can lead to the negative net ac conductivity in the terahertz range of frequencies. This effect might be used in graphene-based coherent sources of terahertz radiation.",

author = "V. Ryzhii and M. Ryzhii and T. Otsuji",

note = "Funding Information: This work was supported by the Grant-in-Aid for Scientific Research (S) from the JSPS, Japan. ",

year = "2007",

doi = "10.1063/1.2717566",

language = "English",

volume = "101",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

number = "8",

}

TY - JOUR

T1 - Negative dynamic conductivity of graphene with optical pumping

AU - Ryzhii, V.

AU - Ryzhii, M.

AU - Otsuji, T.

N1 - Funding Information: This work was supported by the Grant-in-Aid for Scientific Research (S) from the JSPS, Japan.

PY - 2007

Y1 - 2007

N2 - We study the dynamic ac conductivity of a nonequilibrium two-dimensional electron-hole system in optically pumped graphene. Considering the contribution of both interband and intraband transitions, we demonstrate that at sufficiently strong pumping the population inversion in graphene can lead to the negative net ac conductivity in the terahertz range of frequencies. This effect might be used in graphene-based coherent sources of terahertz radiation.

AB - We study the dynamic ac conductivity of a nonequilibrium two-dimensional electron-hole system in optically pumped graphene. Considering the contribution of both interband and intraband transitions, we demonstrate that at sufficiently strong pumping the population inversion in graphene can lead to the negative net ac conductivity in the terahertz range of frequencies. This effect might be used in graphene-based coherent sources of terahertz radiation.

UR - http://www.scopus.com/inward/record.url?scp=34247887542&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34247887542&partnerID=8YFLogxK

U2 - 10.1063/1.2717566

DO - 10.1063/1.2717566

M3 - Article

AN - SCOPUS:34247887542

SN - 0021-8979

VL - 101

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 8

M1 - 083114

ER -

Negative dynamic conductivity of graphene with optical pumping

Abstract

Access to Document

Other files and links

Fingerprint

Cite this