Imaging Phonons: Acoustic Wave Propagation in Solids

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September 2005



Drop a pebble in a pond and the results are predictable: circular waves flow from the point of impact. Hit a point on a crystalline solid, however, and the expanding waves are highly nonspherical; the elasticity of a crystal is anisotropic. This book provides a fresh look at the vibrational properties of crystalline solids, elucidated by new imaging techniques. From the megahertz vibrations of ultrasound to the near-terahertz vibrations associated with heat, the underlying elastic anisotropy of the crystal asserts itself. Phonons are elementary vibrations that affect many properties of solids--thermal, electrical, and magnetic. This text covers the basic theory and experimental observations of phonon propagation in solids. Phonon imaging techniques provide physical insights into such topics as phonon focusing, lattice dynamics, and ultrasound propagation. Scattering of phonons from interfaces, superlattices, defects, and electrons are treated in detail. The book includes many striking and original illustrations.


Preface; Prologue; 1. Ballistic heat pulses and phonon imaging - a first look; 2. Phonon focusing; 3. Generation and detection of phonons - experimental aspects; 4. Focusing in cubic crystals; 5. Acoustic symmetry and piezoelectricity; 6. Lattice dynamics; 7. Imaging of dispersive phonons; 8. Phonon dynamics; 9. Bulk scattering of phonons; 10. Quasidiffusion and the phonon source; 11. Phonon scattering at interfaces; 12. Refraction and reflection at solid/solid interfaces - experiment; 13. Imaging ultrasound in crystals; 14. Imaging surface acoustic waves; 15. Interactions of ballistic phonons with electrons; Appendices; Index.


'Imaging Phonons will be of relevance to applications as diverse as non-destructive testing of composites and single-crystal alloys, acoustic microscopy of semiconductors and opto-electronic materials, and surface Brillouin spectroscopy of crystalline layers and coatings. The author has produced a masterpiece.' Andrew Briggs, The Times Higher Education Supplement 'Jim Wolfe's book provides a comprehensive and highly readable review ... The images are spectacular and display all the features of geometrical optics ... Wolfe is an excellent teacher as well as a researcher and anyone whose work connects with phonons will gain from giving the book more careful attention ... should be in the library of any University that has a solid state physics group and anyone working with phonons will want to own a copy.' Professor L. J. Challis, Contemporary Physics
EAN: 9780521022088
ISBN: 0521022088
Untertitel: Revised. Sprache: Englisch.
Erscheinungsdatum: September 2005
Seitenanzahl: 428 Seiten
Format: kartoniert
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