The problem with which this investigation is concerned is that of demonstrating the applicability of a particular theory and technique to two materials of different band structure, InSb and HgSe, and in doing so, determining the deformation potentials of these materials. The theory used in this investigation predicts an inversion-asymmetry splitting and an anisotropy of the Fermi surface under uniaxial stress. No previous studies have ever verified the existence of an anisotropy of the Fermi surface of semiconductors under stress. In this work evidence will be given which demonstrates this anisotropy. Although the inversion-asymmetry splitting parameter has been determined for some materials, no value has ever been reported for InSb. The methods presented in this paper allow a value of the splitting parameter to be determined for InSb.

The Master’s thesis Pavel Haas: Chamber Works with violin looks into his three string quartets in the context of this composer’s life. It evaluates Haas’s composing style and his visions, and generally takes it in the context of his era. The thesis is focused on his String Quartet Number One C Sharp Minor, String Quartet Number Two „From the Monkey Mountains,“ and String Quartet Number Three Op. 15. It consists of a brief history of its premieres, analysis and a special chapter about the difficulties of interpretation. The next chapter is about the comparison of recordings, which includes the first contemporary recording made by The Hawthorne String Quartet, the recording of Kocianovo kvarteto as a representative of traditional Czech chamber music school and the recordings of two Czech young generation quartets, Pavel Haas Quartet and Bennewitz Quartet. One of the chapters is focused on Pavel Haas’s Quartet, which is named after him.

The origin of the Shubnikov-de Haas effect, the strain theory developed by Bir and Pikus, and a simple, classical beating-effects model are discussed. The equipment and the experimental techniques used in recording the Shubnikov-de Haas oscillations of n-type indium antimonite are described. The analysis of the experimental data showed that the angular anisotropy of the period of SdH oscillations at zero stress was unmeasurable for low concentration samples as discussed by other workers. Thus the Fermi surfaces of InSb are nearly spherical at low concentration. It was also shown that the Fermi surface of a high concentration sample of InAs is also nearly spherical. The advantages of using the magnetic field modulation and phase sensitive detection techniques in determining the beats are given. The simple, classical beating-effects model is able to explain the experimental beating effect data in InSb. The computer programs used to obtain the theoretical values of the beat nodal position, SdH frequencies, average frequency, the Fermi surface contours, and the energy eigenvalues are given.

Konstanz, Univ., Diss., 2001.

Zugl.: Dresden, Techn. Univ., Diss., 2010

Diss.--Fachbereich Gesellschaftswissenschaften--Wuppertal--Bergische Universität, 1988.

abstract: Wolfgang Haas is an award-winning Austrian author known primarily for his entertaining and quirky detective novels which follow the misadventures of Simon Brenner, an Austrian private investigator. These novels are notable for their subtle and not-so-subtle critiques of contemporary Austrian society and culture, their sometimes grisly content, and their unique and colloquial use of the Austrian variety of the German language. Haas has received numerous literary awards in the German-speaking world and attributes his success to the unique way he tells his stories, rather than the stories themselves. Of the seven Brenner novels that have been published thus far, only one is available in English translation, and he remains virtually unknown in the English-speaking world. This thesis includes a brief biography of Haas and an overview of his career, an analysis of his unique writing style and the problems they pose for a translator, and an English translation of the first two chapters of the novel Silentium! (1999). / Dissertation/Thesis / M.A. German 2013

The direct current size effect and the radio frequency size effect oscillation in the magnetoconductivity have been explained by a semiclassical theory which is based on the matching of the sample thickness and the classical spiral orbit of the electron about a magnetic field.

<p> The de Haas-van Alphen effect has been used to measure the Fermi surface areas, cyclotron masses and Dingle temperatures in antimony and its alloys containing less than 0.3 percent tin. The Fermi surface of each alloy was similar to the pure antimony surface. However the hole surface increased in size and the electron surface shrunk since tin removes electrons from the alloy. The cyclotron masses increased and decreased for holes and electrons respectively, giving a definite indication of nonparabolic conduction and valence bands. The cyclotron masses were found from the temperature dependence of the dHvA amplitude after interfering dHvA frequency components were removed by a Fourier analysis technique. The Dingle temperature increased roughly linearily with tin concentration.</p> <p> A comparison of the hole and electron Fermi surface volumes with the number of tin atoms added to the alloys shows that one tin atom removes one electron from the alloy as expected from the unit valence difference between antimony and tin. This value is higher than that found by other workers using different techniques.</p> <p> The shapes of the energy bands along with the cyclotron masses have been compared with several band models. An ellipsoidal band provides a rough overall description of both holes and electrons while an ellipsoidal nonparabolic band describes the mass behaviour on alloying more accurately. A pseudopotential band calculated using the method and potential of Falicov and Lin (1967) was also compared with the data.</p> <p> The observed relative frequency changes were used to compare the data with the rigid band model of alloying. The bands are rigid for low concentrations. At higher concentrations there are deviations apparently caused by the cyclotron mass change and an axial ratio change in the hole Fermi surface.</p> / Thesis / Doctor of Philosophy (PhD)

A digital program has been developed to Fourier analyse the data obtained in experiments to study the de Haas-van Alphen effect. A physical account of the origin of this effect is given and the problem of analysing the data is explained. An account is given of the development of the program together with a consideration of the mathematical properties of the Fourier transform. General questions concerning the resolving power and accuracy of this method of analysis are discussed. The program was tested using artificial synthetic data of known analytic form and later applied to the analysis of data from a single crystal of mercury. / Thesis / Master of Science (MSc)