Intrasubband plasmons in semi-infinite n - i - p - i semiconductor superlattices

Journal Article · Sun Mar 15 04:00:00 EST 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.45.6050· OSTI ID:7234301

Kushwaha, M S ^[1]

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1. Instituto de Fisica, Universidad Autonoma de Puebla, Apartado Postal J-48, Puebla-72570 (Mexico)

A theoretical investigation has been made of the collective intrasubband plasma modes in a semi-infinite superlattice system consisting of {ital n}- and {ital p}-type doped semiconductors separated by an undoped intrinsic ({ital i}) semiconductor ({ital n}-{ital i}-{ital p}-{ital i} superstructure). The thicknesses of the constituent layers are assumed to be sufficiently large so that quantum-well effects can be ignored. The material layers are characterized by frequency-dependent (macroscopic) dielectric functions. The nonradiative plasma modes are defined by the electromagnetic fields that decay exponentially away from each interface and that have an envelope that decays exponentially away from the end of the truncated superlattice. We employ a fully retarded theory in the framework of a transfer-matrix method. The general dispersion relations are shown to reproduce exactly the theoretical results for a binary semiconductor (or dielectric) superlattice. Numerical examples are presented for several illustrative cases.

• OSTI ID: 7234301
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:11; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

665200* -- Solid-State Plasma-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COLLECTIVE EXCITATIONS
DIFFERENTIAL EQUATIONS
DISPERSION RELATIONS
ENERGY-LEVEL TRANSITIONS
EQUATIONS
EXCITATION
MATHEMATICS
MAXWELL EQUATIONS
NUMERICAL ANALYSIS
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMONS
QUASI PARTICLES
SOLID-STATE PLASMA
TRANSFER MATRIX METHOD