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M. H. Brodsky

Bio: M. H. Brodsky is an academic researcher from Silver Spring Networks. The author has contributed to research in topics: Scattering. The author has an hindex of 1, co-authored 1 publications receiving 44 citations.
Topics: Scattering

Papers
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Journal ArticleDOI
TL;DR: In this article, the effect of ambients on the electrical properties of a number of PbSe epitaxial films was examined and the authors concluded that the existing surface-mobility calculations for degenerate semiconductors are inadequate.
Abstract: We examine the effect of ambients on the electrical properties of a number of PbSe epitaxial films. These properties are compared with the calculations based on existing theoretical models. We conclude that the existing surface-mobility calculations for degenerate semiconductors are inadequate. The most important result is that the scattering of carriers at the surface appears to be completely specular in character.

44 citations


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Journal ArticleDOI
TL;DR: In PbSe epitaxial thin films grown by thermal evaporation on KCl(001) substrates and covered with an EuS protective layer, oscillatory dependences of the galvanomagnetic and thermoelectric properties (electrical conductivity σ, the Hall coefficient RH, charge carrier mobility μ, and the Seebeck coefficient S) were observed at room temperature as mentioned in this paper.
Abstract: In PbSe epitaxial thin films grown by thermal evaporation on KCl(001) substrates and covered with an EuS protective layer, oscillatory dependences of the galvanomagnetic and thermoelectric properties (electrical conductivity σ, the Hall coefficient RH, charge carrier mobility μ, and the Seebeck coefficient S) on the PbSe layer thickness d (3

70 citations

Journal ArticleDOI
TL;DR: In this paper, thin PbSe films were evaporated onto NaCl substrates and the effect of various ambient gases on their electrical properties was investigated, and the experimental data can be explained quite well by a phenomenological two-layer model for the film which consists of a bulk region and a surface region which is affected by gas ambients.

43 citations

Journal ArticleDOI
TL;DR: In this paper, the results of adsorption and diffusion of oxygen were discussed in terms of the Hall coefficient and resistivity of n-type PbTe samples, which imply that large band bending occurs at the surface or that the room temperature diffusion coefficient of oxygen is high (>10 -10 cm 2 sec -1 ).

36 citations

Journal ArticleDOI
TL;DR: In this paper, the reflection spectra of PbS, PbSe, and PbTe have been measured in the 14 to 26 eV region using as a source the DESY-synchrotron.
Abstract: The reflection spectra of PbS, PbSe, and PbTe have been measured in the 14 to 26 eV region using as a source the DESY-synchrotron. Three peaks are observed for PbSe and PbTe and two for PbS, corresponding to transitions from the outermost d-levels of the Pb core to the conduction bands. In order to find out the relationship between these peaks and the spin–orbit splitting of the d-core levels, X-rays photoemission measurements (ESCA) have been performed. It is concluded that this spin-orbit splitting of the d-core levels does not appear directly in the optical spectra. A simple model is given to interpret these spectra. The valence band, and other core levels of binding energies in the range of the Kα line (1486.6 eV) aluminium-X-ray source have also been studied. The binding energies, splittings, and chemical shifts obtained are discussed and compared with theoretical calculations. The most intense ESCA lines exhibit satellites which can be associated with lines produced by the excitation of valence plasmons. The effects of adsorbed oxygen on the ESCA spectra are also discussed. Die Reflexionsspektren von PbS, PbSe und PbTe wurden im 14 bis 26 eV Bereich mit dem DESY-Synchrotron als Quelle untersucht. Drei Maxima werden fur PbSe und PbTe und zwei fur PbS beobachtet, die den Ubergangen von den ausersten d-Niveaus des Pb-Rumpfes zu den Leitungsbandern entsprechen. Um die Beziehung zwischen diesen Maxima und der Spin–Bahn-Aufspaltung der d-Rumpfniveaus zu finden, wurden Rontgenstrahlen-Photoemissionsmessungen (ESCA) durchgefuhrt. Es wird gezeigt, das diese Spin-Bahn-Aufspaltung der d-Rumpfniveaus in den optischen Spektren nicht direkt auftritt. Es wird ein einfaches Modell zur Interpretation dieser Spektren angegeben. Das Valenzband und andere Rumpfniveaus mit Bindungsenergien im Bereich der Kα-Linie (1486,6 eV) der Aluminiumrontgenstrahlenquelle wurden ebenfalls untersucht. Die gefundenen Bindungsenergien, Aufspaltungen und chemischen Verschiebungen werden diskutiert und mit theoretischen Berechnungen verglichen. Die intensivsten ESCA-Linien zeigen Satelliten, die mit Linien identifiziert werden konnen, die durch Anregung von Valenzplasmonen hervorgerufen werden. Der Einflus von adsorbiertem Sauerstoff auf die ESCA-Spektren wird diskutiert.

27 citations

Journal ArticleDOI
TL;DR: In this article, PbTe was treated with molecular hydrogen in the presence of a hot filament and large changes occurred in the conductivity and Hall coefficient, denoting a transfer of electrons (up to 1014 cm−2) to the semiconductor.

25 citations