Influence of AlN/GaN superlattice period on frequency of polar optical modes

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Influence of AlN/GaN superlattice period on frequency of polar optical modes. / Pankin, D. V.; Smirnov, M. B.

In: Journal of Physics: Conference Series, Vol. 741, No. 1, 012123, 15.09.2016.

Research output: Contribution to journal › Conference article › peer-review

BibTeX

@article{24ae4409476a48689b30abfe5cb301ef,

title = "Influence of AlN/GaN superlattice period on frequency of polar optical modes",

abstract = "Polar optical phonons in the binary AlN/GaN superlattices (SL) were studied in the framework of dielectric continuum model (DCM). It is shown that the modes propagating in the interface plane are delocalized over all layers and the modes propagating along the SL axis are delocalized in certain layers. Frequencies of former strongly depend on the layer thickness ratio and frequencies of the latter do not depend on the SL structure. Such behavior is typical for the short-period SL. We show that a strong coupling between two types of the modes takes place at increasing SL period. The phenomenon is described mathematically by the frequency- structure relations and its physical meaning is discussed.",

author = "Pankin, {D. V.} and Smirnov, {M. B.}",

year = "2016",

month = sep,

day = "15",

doi = "10.1088/1742-6596/741/1/012123",

language = "English",

volume = "741",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd.",

number = "1",

note = "3rd International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures, Saint Petersburg OPEN 2016 ; Conference date: 28-03-2016 Through 30-03-2016",

}

RIS

TY - JOUR

T1 - Influence of AlN/GaN superlattice period on frequency of polar optical modes

AU - Pankin, D. V.

AU - Smirnov, M. B.

PY - 2016/9/15

Y1 - 2016/9/15

N2 - Polar optical phonons in the binary AlN/GaN superlattices (SL) were studied in the framework of dielectric continuum model (DCM). It is shown that the modes propagating in the interface plane are delocalized over all layers and the modes propagating along the SL axis are delocalized in certain layers. Frequencies of former strongly depend on the layer thickness ratio and frequencies of the latter do not depend on the SL structure. Such behavior is typical for the short-period SL. We show that a strong coupling between two types of the modes takes place at increasing SL period. The phenomenon is described mathematically by the frequency- structure relations and its physical meaning is discussed.

AB - Polar optical phonons in the binary AlN/GaN superlattices (SL) were studied in the framework of dielectric continuum model (DCM). It is shown that the modes propagating in the interface plane are delocalized over all layers and the modes propagating along the SL axis are delocalized in certain layers. Frequencies of former strongly depend on the layer thickness ratio and frequencies of the latter do not depend on the SL structure. Such behavior is typical for the short-period SL. We show that a strong coupling between two types of the modes takes place at increasing SL period. The phenomenon is described mathematically by the frequency- structure relations and its physical meaning is discussed.

UR - http://www.scopus.com/inward/record.url?scp=84989291114&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/741/1/012123

DO - 10.1088/1742-6596/741/1/012123

M3 - Conference article

AN - SCOPUS:84989291114

VL - 741

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012123

T2 - 3rd International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures, Saint Petersburg OPEN 2016

Y2 - 28 March 2016 through 30 March 2016

ER -

ID: 36168376