Effect of antibound states in single barrier tunneling

Journal Article · Tue Feb 01 00:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.024103· OSTI ID:20650138

Garcia-Calderon, Gaston ^[1]; Villavicencio, Jorge ^[2]

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1. Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Apartado Postal 20 364, 01000 Mexico, Distrito Federal (Mexico)
2. Facultad de Ciencias, Universidad Autonoma de Baja California, Apartado Postal 1880, 22800 Ensenada, Baja California (Mexico)

It is demonstrated that for very thin or very shallow rectangular barriers the transmission amplitude possesses an antibound pole situated very close to threshold energy. The transmission coefficient and the delay time at very low incidence energies may be expressed analytically in terms of the antibound pole contribution, which accounts, respectively, for the enhancement of the transmittivity to almost a unity value and for the large delay time exhibited by these systems. The large delay time caused by the antibound pole represents a type of 'trapping' mechanism different from that of resonant tunneling.

• OSTI ID: 20650138
• Journal Information: Physical Review. A, Vol. 71, Issue 2; Other Information: DOI: 10.1103/PhysRevA.71.024103; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLITUDES
BOUND STATE
ENERGY LEVELS
THRESHOLD ENERGY
TRANSMISSION
TUNNEL EFFECT