Phonon Scattering in Condensed Matter

ISBN-13: 9781461330653 / Angielski / Miękka / 2011 / 482 str.

Humphrey Maris

Opis

The Third International Conference on Phonon Scattering in Condensed Matter was held at Brown University, Providence, Rhode Island from August 28-31, 1979. The previous conferences in this series were held at Nottingham in 1975, and in France at Paris and Ste Maxime in 1972. Until about 15 years ago phonon scattering was studied almost exclusively by measurements of thermal conductivity. This approach has the severe limitation that the result obtained for the phonon scattering rate is actually the average of the scattering for all of the phonons in the sample. Thus, no distinction can be made between phonons of different polarization, direction of propagation, or energy. During the 1960's several significant developments occurred. The most important of these was the application by Von Gutfeld and Nethercot of the "heat-pulse" method, previously used only in liquid helium, to the investigation of phonons in crystals. This approach makes possible the study of the propagation and scat- tering of phonons of known polarization and propagation direction. The early heat-pulse experiments used phonon generators which pro- duced phonons having a broad distribution of energies and, in addi- tion, the phonon detectors were sensitive to phonons of all energies.

Spis treści

Amorphous Materials.- Phonon Scattering in Metallic Glasses (invited paper).- Echo Phenomena in Disordered Solids (invited paper).- Further Study of the “Glassy” Low Temperature Properties of Irradiated Crystalline Quartz.- Effect of Thermal Treatments on the Low Temperature Specific Heat of Vitreous Silica.- Electrical Polarizability of Phonon Scattering States in Glasses.- Heat Pulse Experiments at Very Low Temperatures in Vitreous Silica.- Inelastic Phonon Scattering in Glass.- Phonon Density of States and Specific Heat of Amorphous and Crystalline Selenium.- Phonon Scattering in Glasses and Highly Disordered Crystals.- Dispersion and the Thermal Conductivity of SiO2.- Ultrasonic Measurements on Aluminosilicate and Borate Glasses.- Ultrasonic Measurements in Na ?-Alumina at Low Temperatures.- High Resolution Studies of Brillouin Scattering in Amorphous Materials.- Saturation of the Acoustic Attenuation and Relaxation of the Two-Level Systems by the Electrons in Amorphous NiP.- Ultrasonic Studies of Metallic Glasses.- Ultrasonic Absorption in the Superconducting Amorphous Metal PdZr.- Spectral Diffusion and Ultrasonic Attenuation in Amorphous Materials.- Spin-Phonon Interactions.- Stress Effects in the Scattering of Thermal Phonons by Jahn-Teller Impurities in MgO.- Phonon Spectroscopy of Mn3+ in MgO.- Acoustic Paramagnetic Resonance of Cr2+ in CaO.- Low Temperature Thermal Conductivity of TmVO4 and TmAsO4 Crystals.- Acoustic Faraday and Cotton-Mouton Effects in Paramagnetic Crystals.- Acoustic Relaxation Loss Due to Ni3+ Ions in A12O3.- Phonon Spectroscopy of Ion Pairs in A12O3.- Observation of Hyperfine Splitting of the Levels of V3+ Ions and Pairs by Phonon Spectroscopy.- The Observation of Anomalous Ion Sites in Al2O3 by Phonon Frequency Crossing Spectroscopy.- Harmonic Phonon Absorption in a Coupled Spin-Phonon System.- Phonon Scattering by Chromium Ions in GaAs.- Phonon-Phonon Interactions.- Two-Fluid Equations for Phonons with and without Momentum.- Two-Fluid Theory of Phonon Scattering in Dielectric Crystals.- Analysis of the Macroscopic Equations for Second Sound in Solids.- High Temperature Crystals: Limitations on the Phonon Description.- Phonon Resonant Absorption Probed by Acousto-Optic Interaction in Some Ionic Molecular Crystals.- Decay of Optical into Acoustical Phonons.- Acoustic-Optical Phonon Interactions in Solids.- Helium.- Effects of 3He Impurities on the Acoustic Properties of hcp 4He.- Phonon-Quasiparticle Coupling in Dilute He3–He4 Mixtures.- Velocity of Roton Second Sound.- Interface Effects and the Propagation of Well Developed Second Sound Pulse Trains in Thin Slabs of Solid 4He.- Measurements of the Specific Heat of Liquid and Solid 4He in a Confined Geometry at Low Temperatures.- Kapitza Resistance.- Kapitza Resistance Studies Using Phonon Pulse Reflection (invited paper).- Characteristics of Kapitza Conductance (invited paper).- Kapitza Conduction Via Non-Localized Interface Modes.- Agreement between Experiment and Theory in the Kapitza Conductance between Clean Copper Samples and 4He from 0.3 to 1.3 K.- Surface Superconductivity and Kapitza Resistance.- Static and Transient Enhanced Power Anomaly in the Kapitza Conductance of Silver to Helium Four.- A New Method using Brillouin Spectroscopy to Study the Propagation and Reflection of Induced Phonons at Hypersonic Frequencies.- Reflection Coefficient of Phonons at a Si-He3 Interface-Effect of Cryopumping the Si Surface.- Phonon Catastrophes and the Kapitza Resistance.- Specular and Diffuse Phonon Reflection Processes at a Crystal Interface.- Heat Transfer between Powdered CMN and Solid 3He in the Millikelvin Range.- A Macroscopic Approach to the Kapitza Resistance.- Interfacial Three-Phonon Processes and Anomalous Interfacial Energy Transport.- An Exactly Solvable Model for Thermal Boundary Resistance in a Nonharmonic System.- Absorption of Surface Phonons by Adsorbed Helium System on an Inhomogeneous Surface.- Defects.- Low Temperature Thermal Conductivity of KTaO3 and KTN Single Crystals.- Phonon Scattering by Nitrogen Aggregates in Intermediate Type Natural Diamonds.- Correlated Thermal Conductivity and Ionic Thermocurrent Measurements to Study the Suzuki-Like Phase Nucleation in KC?:Pb.- Phonon Resonances Induced by Pb in KCl Studied by Means of Thermal Conductivity and Ionic Thermocurrent Techniques.- Scattering of Phonons by Vacancies.- Evidence of Quasi-Local Phonon Modes around Dislocations in Crystals.- Low-Temperature Thermal Properties of Lithium Fluoride Containing Dislocations.- An Ultrasonic Study of the Ionic Crystal ?-AgI.- Phase Transitions.- Phonons and Phase Transitions in Quasi-One-Dimensional Conductors (invited paper).- An Acoustic Soft Mode in KCP.- Anharmonic Effects in Ultrasonic Propagation near the ?-Transition of 4He.- Investigation of Phase Transitions by Means of Wavevector Reversed Ultrasound.- New Techniques.- Stimulated Phonon Emission (invited paper).- Phonon Detection by the Fountain Pressure in Superfluid 4Helium Films (invited paper).- Bremsstrahlung and Recombination Phonons Studied by Al-PbBi Heterojunction Spectrometer.- Quantitative Detection of Intense Thermal Phonon Pulses using Superconducting Tunnel Junctions.- Observation of a New Type of Energy-Selective Phonon Detector.- Fast Bolometer Amplifiers using Tunnel Diodes.- Study of Acoustoelectrically Amplified Phonons in InSb by Anomalous Transmission of X-Rays.- Tunable Optical Detector and Generator for Terahertz Phonons in CaF2 and SrF2.- Electromechanical Conversion in MS-Contacts; Determination of Frequency Response, Depletion Depths and Energy Levels.- Phonon Propagation and Echoes.- Phonon Magnification in GaAs.- Phonon Focusing and Phonon Conduction in Elastically Anisotropic Crystals.- Phonon Interactions at Crystal Boundaries below 1 K.- Phonon Emission into Diffusive Media.- The Storage Echo in Piezoelectric Powders.- Acoustic Impulse Generation by Piezoelectric Shock in Acoustoelectric Phonon Domains.- Capture and Delay of Phonons in Resonant Regions.- Dynamics of 29 cm?1 Phonons in Ruby using Optical Generation and Detection.- Semiconductors.- Ultrasonic Spectroscopy of the Acceptor Ground State in Cubic Semiconductors (invited paper).- Images of Electron-Hole Droplets and Ballistic Phonons in Ge (invited paper).- Phonon Optics, Carrier Relaxation and Recombination in Semiconductors: Case of GaAs Epitaxial Layers (invited paper).- Interaction of Non-Equilibrium, Ballistic Phonons in a Heat Pulse with the Electron-Hole Liquid in Ge: The Phonon Wind.- Effects of Magnetic Field and Uniaxial Stress on Thermal Phonon Scattering in n-Ge.- Phonon Scattering in N-type Silicon.- Ultrasonic Attenuation in p-InSb at Low Temperatures.- Ultrasonic Hole-Burning of Acceptors in Germanium.- Phonon Scattering at Acceptors with ?8 Ground States in Semiconductors.- Effect of Internal Strains on Low Temperature Thermal Conductivity of Li Doped Ge.- Magnetic Field Dependence of Ballistic Heat-Pulse Attenuation in Sb Doped Ge.- Symmetry of a Donor Related (DX) Center in A?x Ga1-xAs.- Brillouin Scattering by Injected Acoustic Domains in ZnS.- Elastic Properties and Valence - Force-Field Theory in Zero-Gap Semiconductors.- Brillouin and Raman Scattering in Layer Semiconductors GaS and GaSe.- Quantum Effect on Transverse Magnetoresistance of Degenerate Piezoelectric Semiconductors in Strong Magnetic Fields.- Nonequilibrium Phonons in Three-and Two-Dimensional Charge Transport in Semiconductors.- Metals and Superconductors.- The Effects of Hot Phonon Irradiation on the Superconducting Transition of Thin Aluminum Films.- Phonon Emission from a Photoexcited Superconducting Domain.- Electron-Phonon Scattering Rates in Cu, Ag, and Au from Magnetoacoustic Experiments.- Quantum Oscillations Effect on the Lattice Thermal Conductivity of Graphite under Very High Magnetic Fields.- List of Delegates.