Theory of intersubband collective modes in semiconductor superlattices

Tselis, A.; Cruz, Giovany; Quinn, John J.

doi:10.1016/0038-1098(83)90225-9

Cited by 23 publications

(2 citation statements)

References 12 publications

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“…The dielectric response of a confined quasi-two-dimensional (Q2D) electron gas has been studied with different models and approximations in inversion layers in MOS structures [1][2][3] as well as in quantum well (QW) heterostructures [4][5][6][7][8][9][10][11][12][13][14]. The problem has been sometimes studied in the RPA, but some significant advances have been made in the study of many-body interactions beyond the RPA [1,2,[9][10][11][12]15].…”

Section: Introductionmentioning

confidence: 99%

Exchange effects in multisubband plasmons in a quantum well

Rodrı́guez-Coppola¹,

Garcı́a-Moliner²

2001

J. Phys.: Condens. Matter

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Exchange effects in the intra and intersubband plasmons of a quasi-two-dimensional (Q2D) electron gas confined in a quantum well are studied by means of an extension of the 3D Hubbard dielectric function to the Q2D case. This dielectric function takes full account of the multisubband structure of the spectrum of electronic states. The theory is first tested for semiconductors with a model calculation which yields the expected pattern of behaviour for low electronic densities and then used to study a metallic quantum well. The calculations included a total of ten subbands, seven of them occupied. The main effect of exchange is a tendency to stabilize the plasmon lifetimes against Landau damping. The long wave dispersion relations of the lowest 16 normal modes included in the calculation are also substantially modified.

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Section: Introductionmentioning

confidence: 99%

Exchange effects in multisubband plasmons in a quantum well

Rodrı́guez-Coppola¹,

Garcı́a-Moliner²

2001

J. Phys.: Condens. Matter

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“…Recently, using the method of electrostatic image charges, and the approach of [S, 93, the general equation for the discrete plasma modes for finite type I1 system has been derived 1131, 2 x (a2 -a& = 0.…”

Section: Surface Modes Starting From Image Chargesmentioning

confidence: 99%

Plasma Oscillations at the Surface of a Type II Superlattice

1989

Physica Status Solidi (b)

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Dispersion and Damping Properties of Plasmon Polaritons in Superlattice Structures. I. Infinite Superlattice

Haupt

Wendler

1987

Physica Status Solidi (b)

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The dispersion and damping properties of plasmon polaritons in infinite superlattices are analyzed using a local theory with retardation. The band structure and the zone folding of the plasmon polaritons are discussed. It is shown that in a definite range of the thickness ratio of the singlelayers of the superlattice a degeneracy point of the two interface-like plasmon-polariton bands occurs. An analytic expression for the damping function is derived by means of a perturbative method. The different behaviour of the damping of plasmon polaritons in various infinite superlattice structures is discussed. The dispersion curves and the damping function are calculated and presented in graphical form. Es werden die Dispersions-und Dampfungseigenschaften von Plasmon-Polaritonen in unendlichenSupergittern auf der Grundlage einer lokalen Theorie einschlieDlich Retardierung analysiert. Die Bandstruktur und die Zonenfaltung der Plasmon-Polaritonen werden diskutiert. Es wird gezeigt, da8 ein bestimmter Bereich des Schichtdickenverhaltnisses der beiden Teilschichten des Supergitters mit der Existenz eines Entartungspunktes der zwei an die Grenzflachen des Supergitters gebundenen Plasmon-Polaritonen-Bander verbunden ist. Ein analytischer Ausdruck fur die Dampfungsfunktion wird mit Hilfe der Storungstheorie abgeleitet. Das unterschiedliche Verhalten der Dampfung von Plasmon-Polaritonen in verschiedenen unendlichen Supergitterstrukturen wird diskutiert. I n graphischer Form werden die berechneten Dispersionskurven und die Dampfungsfunktion dargestellt.

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Theory of intersubband collective modes in semiconductor superlattices

Cited by 23 publications

References 12 publications

Exchange effects in multisubband plasmons in a quantum well

Exchange effects in multisubband plasmons in a quantum well

Plasma Oscillations at the Surface of a Type II Superlattice

Dispersion and Damping Properties of Plasmon Polaritons in Superlattice Structures. I. Infinite Superlattice

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