Skip to main content

2015 | Buch

Solid Surfaces, Interfaces and Thin Films

insite
SUCHEN

Über dieses Buch

This book emphasises both experimental and theoretical aspects of surface, interface and thin-film physics. As in previous editions the preparation of surfaces and thin films, their atomic and morphological structure, their vibronic and electronic properties as well as fundamentals of adsorption are treated. Because of their importance in modern information technology and nanostructure research, particular emphasis is paid to electronic surface and interface states, semiconductor space charge layers and heterostructures. A special chapter of the book is devoted to collective phenomena at interfaces and in thin films such as superconductivity and magnetism. The latter topic includes the meanwhile important issues giant magnetoresistance and spin-transfer torque mechanism, both effects being of high interest in information technology. In this new edition, for the first time, the effect of spin-orbit coupling on surface states is treated. In this context the class of the recently detected topological insulators, materials of significant importance for spin electronics, are discussed. Particular emphasis, hereby, is laid on the new type of topologically protected surface states with well-defined spin orientation. Furthermore, some important well established experimental techniques such as X-ray diffraction (XRD) and reflection anisotropy spectroscopy (RAS), which were missing so far in earlier editions, were added in this new 6th edition of the book.

Inhaltsverzeichnis

Frontmatter
Chapter 1. Surface and Interface Physics: Its Definition and Importance
Abstract
Surface and thin film physics are described as sub-disciplines of solid state physics. Their importance for many branches of applications as nanoscience, corrosion and catalysis research as well as semiconductor technology and nanoelectronics is outlined. Also various inputs from other science branches as vacuum technology and particle beam optics are discussed.
Hans Lüth
Chapter 2. Preparation of Well-Defined Surfaces, Interfaces and Thin Films
Abstract
The most important preparation techniques of surfaces, interfaces and thin films are presented. In this context the importance of vacuum and ultra-high vacuum (UHV) techniques is explained. Beside cleavage in UHV ion bombardment and annealing are presented as preparation techniques for clean surfaces. Special emphasis is put on evaporation and molecular beam epitaxy as well as on deposition techniques by means of gases and chemical reactions. Auger electron spectroscopy (AES) and ion mass spectroscopy (SIMS) are described as important analysis techniques in this field.
Hans Lüth
Chapter 3. Morphology and Structure of Surfaces, Interfaces and Thin Films
Abstract
Beside an explanation of macroscopic factors as surface stress and surface energy atomistic properties of surfaces and interfaces such as relaxation, reconstruction and defects are discussed. In this context the mathematical description of two-dimensional lattices and superstructures is introduced within the frame of the reciprocal space. Structural models of solid-solid interfaces as well as film growth mechanisms including experimental studies and corresponding analysis techniques are presented.
Hans Lüth
Chapter 4. Scattering from Surfaces and Thin Films
Abstract
The kinematic and the dynamic scattering theory for surfaces and thin films are presented. Elastic scattering is treated in the context of low energy electron diffraction (LEED) and reflection high energy electron reflection (RHEED). Inelastic scattering of electrons is described in the context of electron energy loss (EELS) and high-resolution electron energy loss spectroscopy (HREELS). Its approximate theoretical description by dielectric theory is also supplied. As important standard characterisation techniques for thin films and multilayer systems X-ray diffraction (XRD) and ion scattering, in particular Rutherford backscattering (RBS), are described together with instructive experimental examples.
Hans Lüth
Chapter 5. Surface Phonons
Abstract
The existence of surface lattice vibrations, surface phonons, is explained by means of the model of a linear chain of atoms. The extension to two- and three-dimensional systems as surfaces on bulk crystals consisting of more than one atomic species leads to Rayleigh waves and optical surface phonons. Hereby Fuchs–Kliewer phonons, their coupling to electronic surface plasmons and their detection by HREELS play a major role. Atom and molecular beam scattering are presented as essential investigation tools for surface phonons.
Hans Lüth
Chapter 6. Electronic Surface States
Abstract
The existence of electronic surface states is demonstrated by a simple model calculation for an arrangement of semi-infinite chains of atoms. It is shown, how the extrapolation to a three-dimensional crystal with surface leads to surface state dispersion curves in reciprocal space. The charging character of surface states is explained as well as the difference between intrinsic and extrinsic states. After discussing all essential aspects of photoemission spectroscopy as the most important technique for the study of surface states examples for important metal and semiconductor classes both obtained from experiment and from theory are presented. A special section is devoted to the effect of spin-orbit coupling on surface states. In this context also topologically protected surface states on topological insulators are discussed.
Hans Lüth
Chapter 7. Space-Charge Layers at Semiconductor Interfaces
Abstract
The origin of space charge layers on semiconductor interfaces and their classification is discussed. For some simple space charge layers as Schottky depletion layers and quantized accumulation and inversion layers the formal description is presented. Particular space charge layers on important semiconductors and their surface potentials are discussed , also with respect to applications. In this context also Fermi level pinning is explained.
Hans Lüth
Chapter 8. Metal–Semiconductor Junctions and Semiconductor Heterostructures
Abstract
General principles governing the electronic structure of solid-solid interfaces are explained. In this context metal-induced gap states (MIGS) and virtual induced gap states (VIGS) are introduced. The electronic structure of metal-semiconductor junctions and of semiconductor heterointerfaces are discussed in detail. As applications the Schottky barrier, modulation doping and high mobility two-dimensional electron gases (2DEG) as well as the high electron mobility transistor (HEMT) are presented. In connection with 2DEGs at semiconductor interfaces quantum effects such as Shubnikov–de Haas oscillations and the quantum Hall effect are treated.
Hans Lüth
Chapter 9. Collective Phenomena at Interfaces: Superconductivity and Ferromagnetism
Abstract
Within the framework of non-atomistic mesoscopic model description interface and thin film superconductivity and ferromagnetism are treated. In the field of superconductivity special emphasis is paid to Andreev reflection and Josephson junctions. Ferromagnetic properties are discussed with special focus on low dimension and thin film peculiarities. In this context quantum well states and interlayer coupling are of interest. As important applications the giant magnetoresistance (GMR) and the spin-transfer torque effect are presented. As characterisation techniques the Kerr effect and spinpolarized scanning tunnelling microscopy (SP-STM) are discussed.
Hans Lüth
Chapter 10. Adsorption on Solid Surfaces
Abstract
The interaction of atoms and molecules with solid surfaces is discussed within the framework of physisorption and chemisorption. Hereby also the description of chemisorption processes in terms of multidimensional potential hypersurfaces obtained from density functional theory (DFT) is briefly presented. Work function changes induced by adsorption as well as two-dimensional phase transitions in adsorbate layers are explained. A whole section is devoted to the description of adsorption kinetics with emphasis on the phenomenology of adsorption, desorption and the corresponding isotherms. As important characterisation techniques Kelvin probe and photoemission measurements as well as desorption methods are discussed.
Hans Lüth
Backmatter
Metadaten
Titel
Solid Surfaces, Interfaces and Thin Films
verfasst von
Hans Lüth
Copyright-Jahr
2015
Electronic ISBN
978-3-319-10756-1
Print ISBN
978-3-319-10755-4
DOI
https://doi.org/10.1007/978-3-319-10756-1