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Time-dependent magnetotunnelling of electrons in strongly coupled double quantum wells

C E Ruiz-Díaz, H Cruz, N E Capuj and D Luis

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In this work, we have numerically integrated in space and time the effective-mass Schrödinger equation for an electron wave packet in a strongly coupled double quantum well system. Considering an electronic Hartree interaction and a high magnetic field parallel to the growth plane, we have obtained a dynamical evolution for the electronic wave function. In our double quantum well system, we clearly show the existence of resonant tunnelling oscillations as a function of the electron wave number value in the growth plane. It is also found that the tunnelling time values between both quantum wells are decreased if the magnetic field is increased.


PACS

73.63.Hs Quantum wells

73.40.Gk Tunneling

Subjects

Surfaces, interfaces and thin films

Nanoscale science and low-D systems

Dates

Issue 3 (March 1999)

Received 23 March 1998, accepted for publication 24 November 1998, in final form 2 October 1998



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