Optical Properties of Bismuth-Based Topological Insulators

Topological Insulators (TIs) are insulators in the bulk, but have exotic metallic states at their surfaces. The topology, associated with the electronic wavefunctions of these systems, changes when passing from the bulk to the surface. This work studies, by means of infrared spectroscopy, the low energy optical conductivity of Bismuth based TIs in order to identify the extrinsic charge contribution of the bulk and to separate it from the intrinsic contribution of the surface state carriers. The extensive results presented in this thesis definitely shows the 2D character of the carriers in Bismuth-based topological insulators. The experimental apparatus and the FTIR technique, the theory of optical properties and Surface Plasmon Polaritons, as well as sample preparation of both crystals and thin films, and the analysis procedures are thoroughly described.

List of contents

List of Abbreviations.- Supervisor's Foreword.- 1 Introduction to the Topological Insulators and State of the Art.- 2 Experimental Technique, Sample Fabrication and Models for Data Analysis.- 3 Results and Analysis.

Product details

• Authors: Paola Di Pietro
• Publisher: Springer, Berlin
• Languages: English
• Product format: Paperback / Softback
• Released: 01.01.2016
• EAN: 9783319350448
• ISBN: 978-3-31-935044-8
• No. of pages: 119
• Dimensions: 161 mm x 9 mm x 237 mm
• Weight: 224 g
• Illustrations: X, 119 p. 78 illus., 36 illus. in color.
• Series: Springer Theses; Springer Theses
• Subjects: Natural sciences, medicine, IT, technology > Physics, astronomy > Atomic physics, nuclear physics; Werkstoffprüfung, B, Solid State Physics, Optical and Electronic Materials, Testing of materials, Condensed Matter Physics, Characterization and Analytical Technique, Materials science, Characterization and Evaluation of Materials, Physics and Astronomy, Electronic materials, Electronic devices & materials, Optical Materials, Spectrum analysis, spectrochemistry, mass spectrometry, Semiconductors, Materials—Surfaces, Surface chemistry & adsorption, Thin films, Surfaces and Interfaces, Thin Films, Surfaces, Interfaces and Thin Film