Magneto-acoustic phonon antiresonances in Wannier-Stark superlattices

Alain Nogaret; L Eaves; pc main; M Henini; D K Maude; Jean-Claude Portal; E Molinari; sp beaumont

doi:10.1016/S0038-1101(98)00055-0

Magneto-acoustic phonon antiresonances in Wannier-Stark superlattices

Alain Nogaret, L Eaves, pc main, M Henini, D K Maude, Jean-Claude Portal, E Molinari, sp beaumont

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Abstract

We have measured the hopping current of electrons magnetically confined in a 1D superlattice. We find that phonon assisted hopping between Wannier–Stark states vanishes at hopping energies where the momentum of an LA phonon mode satisfies the condition of Bragg reflection in the superlattice. This effect proves that, even in the presence of an external electric field, the electron states of a crystal conserve their periodicity in k-space. This periodicity reveals a fundamental property of Wannier's effective Hamiltonian.

Original language	English
Pages (from-to)	1489-1493
Number of pages	5
Journal	Solid State Electronics
Volume	42
Issue number	7 - 8
DOIs	https://doi.org/10.1016/S0038-1101(98)00055-0
Publication status	Published - Jul 1998

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title = "Magneto-acoustic phonon antiresonances in Wannier-Stark superlattices",

abstract = "We have measured the hopping current of electrons magnetically confined in a 1D superlattice. We find that phonon assisted hopping between Wannier–Stark states vanishes at hopping energies where the momentum of an LA phonon mode satisfies the condition of Bragg reflection in the superlattice. This effect proves that, even in the presence of an external electric field, the electron states of a crystal conserve their periodicity in k-space. This periodicity reveals a fundamental property of Wannier's effective Hamiltonian.",

author = "Alain Nogaret and L Eaves and pc main and M Henini and Maude, {D K} and Jean-Claude Portal and E Molinari and sp beaumont",

year = "1998",

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doi = "10.1016/S0038-1101(98)00055-0",

language = "English",

volume = "42",

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journal = "Solid State Electronics",

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T1 - Magneto-acoustic phonon antiresonances in Wannier-Stark superlattices

AU - Nogaret, Alain

AU - Eaves, L

AU - main, pc

AU - Henini, M

AU - Maude, D K

AU - Portal, Jean-Claude

AU - Molinari, E

AU - beaumont, sp

PY - 1998/7

Y1 - 1998/7

N2 - We have measured the hopping current of electrons magnetically confined in a 1D superlattice. We find that phonon assisted hopping between Wannier–Stark states vanishes at hopping energies where the momentum of an LA phonon mode satisfies the condition of Bragg reflection in the superlattice. This effect proves that, even in the presence of an external electric field, the electron states of a crystal conserve their periodicity in k-space. This periodicity reveals a fundamental property of Wannier's effective Hamiltonian.

AB - We have measured the hopping current of electrons magnetically confined in a 1D superlattice. We find that phonon assisted hopping between Wannier–Stark states vanishes at hopping energies where the momentum of an LA phonon mode satisfies the condition of Bragg reflection in the superlattice. This effect proves that, even in the presence of an external electric field, the electron states of a crystal conserve their periodicity in k-space. This periodicity reveals a fundamental property of Wannier's effective Hamiltonian.

U2 - 10.1016/S0038-1101(98)00055-0

DO - 10.1016/S0038-1101(98)00055-0

M3 - Article

SN - 0038-1101

VL - 42

SP - 1489

EP - 1493

JO - Solid State Electronics

JF - Solid State Electronics

IS - 7 - 8

ER -

Magneto-acoustic phonon antiresonances in Wannier-Stark superlattices

Abstract

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