What question did this study set out to answer?

To evaluate quantum mechanical transport properties and conductivity behavior in a semiconductor engineered with a one-dimensional periodic superlattice potential.

January 1, 1970IBM Journal of Research and Development

Superlattice and Negative Differential Conductivity in Semiconductors

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Authors

LEL. EsakiYokohama University of Pharmacy RTRaphael TsuUniversity of North Carolina at Charlotte

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Overview

Theoretical analysis demonstrates negative differential conductivity in semiconductor superlattices, indicating quantum mechanical effects across artificial minizones.

Key Points

To evaluate quantum mechanical transport properties and conductivity behavior in a semiconductor engineered with a one-dimensional periodic superlattice potential.
Modeled a one-dimensional periodic potential introduced during epitaxial growth by alternating alloy composition or impurity density with a period on the order of 100 Å.
Analyzed electron dynamics under the condition that the superlattice period is shorter than the electron mean free path, dividing the Brillouin zone into minizones.
Subdivision of the Brillouin zone creates narrow permitted and forbidden energy bands, altering the electron energy-momentum relation.
Excitation of electrons past the energy-momentum inflection point by moderate electric fields occurs when scattering times satisfy a threshold condition, producing negative differential conductance.

Cite This Study

Esaki et al. (1970) studied this question.

synapsesocial.com/papers/69d76055f182769aa8b8accf https://doi.org/10.1147/rd.141.0061

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January 1, 1970IBM Journal of Research and Development

Superlattice and Negative Differential Conductivity in Semiconductors

View Full Paper

Ask AI

Bookmark

Authors

LEL. EsakiYokohama University of Pharmacy RTRaphael TsuUniversity of North Carolina at Charlotte

Discussion

Member takes

Overview

Theoretical analysis demonstrates negative differential conductivity in semiconductor superlattices, indicating quantum mechanical effects across artificial minizones.

Key Points

To evaluate quantum mechanical transport properties and conductivity behavior in a semiconductor engineered with a one-dimensional periodic superlattice potential.
Modeled a one-dimensional periodic potential introduced during epitaxial growth by alternating alloy composition or impurity density with a period on the order of 100 Å.
Analyzed electron dynamics under the condition that the superlattice period is shorter than the electron mean free path, dividing the Brillouin zone into minizones.
Subdivision of the Brillouin zone creates narrow permitted and forbidden energy bands, altering the electron energy-momentum relation.
Excitation of electrons past the energy-momentum inflection point by moderate electric fields occurs when scattering times satisfy a threshold condition, producing negative differential conductance.

Cite This Study

Esaki et al. (1970) studied this question.

synapsesocial.com/papers/69d76055f182769aa8b8accf https://doi.org/10.1147/rd.141.0061

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