The quantum interference effect in semiconductor space charge layers studied by Feynman path integrals. General formalism and illustrative examples
Nachev, I
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BAND THEORY; FEYNMAN PATH INTEGRAL; CADMIUM TELLURIDES; ENERGY GAP; ENERGY LEVELS; INTERFERENCE; MERCURY TELLURIDES; PROPAGATOR; SEMICONDUCTOR JUNCTIONS; SPACE CHARGE; 665430; 661100; OTHER TOPICS IN QUANTUM FLUIDS AND SOLIDS; CLASSICAL AND QUANTUM MECHANICS
The subband energy states in low-dimensional structures, quantum wells and heterostructures are computed by a new method, which accounts directly the quantum interference effect. It is base on the sum of Feynman paths in real space and time. The heard of this method is a special procedure, which sums a huge number of Feynman paths - of order of 10{sup 663}, as shown in one of the presented examples. The method has wider applicability range compared to the conventional techniques based on the Schroedinger equation, and can be applied for modelling of the following two cases: (i) resonant tunneling structures or space charge layers in which one discrete energy level interacts with quasicontinuum of states, (ii) compounds with negative energy gaps. Several illustrative examples are given and possible modifications and applications to other problems are outlined. (author). 26 refs, 6 figs.
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
OSTI; NTIS (US Sales Only); INIS
IAEA
1994-10-01
English
Technical Report
Other Information: PBD: Oct 1994
Medium: X; Size: 20 p.
ON: DE95614483
IC-94/334
Other: ON: DE95614483; TRN: XA9438643014107
INIS; SCA: 665430; 661100; PA: AIX-26:014107; EDB-95:033087; SN: 95001325809
2008-02-12
10113022