Field In Heterostructures Research Articles

The reflection of light by planar stratified media: the groupoid of amplitudes and a phase 'Thomas precession'

The reflection coefficient of light on stratified planar structures can be obtained by postulating the use of a complex generalization of Einstein's addition theorem for parallel velocities. The algebraic properties of the 'composition law of amplitudes' show that the set of all complex amplitudes of the electromagnetic field in heterostructures forms a weakly associative-commutative groupoid. The first concrete application of this abstract concept was found only in 1988 in special relativity. This work exhibits another example in a quite different field of physics. It also puts into evidence that the 'phase rotation' of light in stratified planar structures is to be considered as a 'Thomas rotation'.

New developments in quantum heterostructures

Many new concepts have recently been demonstrated in the field of quantum heterostructures. Progress has been towards novel materials systems and physical phenomena, lower dimensionality, simultaneous quantization of electron and photon states, yielding devices with new and / or unsurpassed properties.

Surface and interface optical-phonon modes in a finite double heterostructure of polar crystals.

Within the framework of the dielectric-continuum model, the equations of motion for the polarization field in a finite double heterostructure of polar crystals are solved exactly for the surface and interface optical-phonon modes. The eigenvectors, the dispersion relation, and the surface and the interface charge densities are obtained. This work can be regarded as a generalization of the formalism of Licari and Evrard [Phys. Rev. B 15, 2254 (1977)] and of Chen, Lin, and George [Phys. Rev. B 41, 1435 (1990)].

Vanishing gaps in 1D bandstructures

The criterion for vanishing or zero energy gaps in the spectrum of 1D electronic bandstructures is obtained from perturbation theory. It is in agreement with examples of periodic potentials which never exhibit zero-gaps as well as with those which may, including certain smooth periodic potentials. The results have relevance to recent work in the field of semiconductor layered heterostructures or superlattices. The analysis should also have implications for other problems that involve Hill's determinant.

Generation of inner electrical field in heterostructure of LB films

Electrical Engineering in JapanVolume 108, Issue 5 p. 22-29 Article Generation of inner electrical field in heterostructure of LB films Taro Hino, Taro Hino Department of Physical Electronics, Faculty of Engineering, Tokyo Institute of TechnologySearch for more papers by this authorYoung Soo Kwan, Young Soo Kwan Department of Physical Electronics, Faculty of Engineering, Tokyo Institute of TechnologySearch for more papers by this author Taro Hino, Taro Hino Department of Physical Electronics, Faculty of Engineering, Tokyo Institute of TechnologySearch for more papers by this authorYoung Soo Kwan, Young Soo Kwan Department of Physical Electronics, Faculty of Engineering, Tokyo Institute of TechnologySearch for more papers by this author First published: September/October 1988 https://doi.org/10.1002/eej.4391080503AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Volume108, Issue5September/October 1988Pages 22-29 RelatedInformation

ＬＢ膜ヘテロ構造における内蔵電界の発生

ＬＢ膜ヘテロ構造における内蔵電界の発生