Download or read book The Generation of Microwave Phonons and Their Use in Studying the Spin Phonon Interaction written by Paul Henry Carr and published by . This book was released on 1961 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Harmonic Generation of Microwave Phonons written by Paul Henry Carr and published by . This book was released on 1969 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to produce coherent phonons of microwave frequency provides a much needed means of investigating fundamental phenomena in solid state physics at frequencies never before attained. It is shown for the first time that second and third harmonics of the fundamental acoustic wave are also generated. The fact that the secondharmonic acoustic power was observed to be proportional to the square of the fundamental and the third-harmonic acoustic power proportional to the cube of the fundamental establishes the nonlinearity of the generation mechanism. Second-harmonic generation of longitudinal phonons in nonpiezoelectric Z-cut quartz was observed. The generation mechanism is common to all dielectric media. This demonstrates that coherent phonon generation is not restricted to relatively rare piezoelectric materials. The highest frequency at which microwave phonons can be generated is limited to 80 Gcps by present-day highpower microwave sources. The successful generation of harmonics of microwave phonons enhances the possibility of extending the present limit well into the millimeter range. Fundamental research of this type can lead to such practical control devices as microwave delay lines since the acoustic delay time of one centimeter of quartz is the same as that of 500 meters of waveguide. (Author).
Download or read book Harmonic Generation of Microwave Phonons by Radiation Pressure and by the Phonon Phonon Interaction written by Paul H. Carr and published by . This book was released on 1966 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book OAR written by and published by . This book was released on 1967 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phonon Generation by Magnetic Films written by Marden H. Seavey (Jr.) and published by . This book was released on 1966 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Harmonic Generation of Microwave Phonons by Radiation Pressure and by the Phonon Phonon Interaction written by Paul H. Carr and published by . This book was released on 1966 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Harmonic Generation of Microwave Phonons in Quartz written by Paul H. Carr and published by . This book was released on 1964 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory of Generation and Conversion of Phonon Angular Momentum written by Masato Hamada and published by Springer Nature. This book was released on 2021-01-18 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a theoretical study of the generation and conversion of phonon angular momentum in crystals. Recently, rotational motions of lattice vibrations, i.e., phonons, in crystals attract considerable attentions. As such, the book theoretically demonstrate generations of phonons with rotational motions, based on model calculations and first-principle calculations. In systems without inversion symmetry, the phonon angular momentum is shown to be caused by the temperature gradient, which is demonstrated in crystals such as wurtzite gallium nitride, tellurium, and selenium using the first-principle calculations. In systems with neither time-reversal nor inversion symmetries, the phonon angular momentum is shown to be generated by an electric field. Secondly, the book presents the microscopic mechanisms developed by the author and his collaborator on how these microscopic rotations of nuclei are coupled with electron spins. These predictions serve as building blocks for spintronics with phonons or mechanical motions.
Download or read book Unclassified Publications of Lincoln Laboratory written by Lincoln Laboratory and published by . This book was released on 1951 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Journal of Physics and Chemistry of Solids written by and published by . This book was released on 1962 with total page 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Resonant Phonon Scattering in KCl Li Using Heat Pulses and Microwave Phonon Generation written by Donald Jones Channin and published by . This book was released on 1970 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interaction between acoustic phonons and tunneling states of defects in solids has been studied in KCl:Li+ by means of two techniques: phonon generation through resonant pumping of the tunneling states with microwaves, and scattering of heat pulses by the tunneling states. Both techniques provide information on the selection rules and defect-lattice coupling mechanisms. The frequency spectrum of the microwave-generated phonons can also provide information on resonance fluorescence phenoman in solids. (Author).
Download or read book Length Scale Dependent Phonon Interactions written by Subhash L. Shindé and published by Springer Science & Business Media. This book was released on 2013-10-29 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive description of phonons and their interactions in systems with different dimensions and length scales. Internationally-recognized leaders describe theories and measurements of phonon interactions in relation to the design of materials with exotic properties such as metamaterials, nano-mechanical systems, next-generation electronic, photonic, and acoustic devices, energy harvesting, optical information storage, and applications of phonon lasers in a variety of fields. The emergence of techniques for control of semiconductor properties and geometry has enabled engineers to design structures in which functionality is derived from controlling electron behavior. As manufacturing techniques have greatly expanded the list of available materials and the range of attainable length scales, similar opportunities now exist for designing devices whose functionality is derived from controlling phonon behavior. However, progress in this area is hampered by gaps in our knowledge of phonon transport across and along arbitrary interfaces, the scattering of phonons with crystal defects, interface roughness and mass-mixing, delocalized electrons/collective electronic excitations, and solid acoustic vibrations when these occur in structures with small physical dimensions. This book provides a comprehensive description of phonons and their interactions in systems with different dimensions and length scales. Theories and measurements of phonon interactions are described in relation to the design of materials with exotic properties such as metamaterials, nano-mechanical systems, next-generation electronic, photonic, and acoustic devices, energy harvesting, optical information storage, and applications of phonon lasers in a variety of fields.
Download or read book Air Force Research Resum s written by and published by . This book was released on with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phonon Scattering in Solids written by L. Challis and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Second International Conference on Phonon Scattering in Solids was held at the University of Nottingham from August 27th - 30th 1975. It was attended by 192 delegates from 24 countries who were accompanied by 43 members of their families. Eleven invited papers were read and 96 contributed papers; the contributed papers were in two parallel sessions. The Conference included the topics of the two International Conferences held in France in 1972, in Paris and at Ste Maxime. The Conference brought together workers concerned with many aspects of phonon scattering in solids and liquid helium. Some of the work reported were studies of the intrinsic properties of diel ectric materials such as the effects of anharmonicity, dispersion and anisotropy on phonon propagation and the conditions for the existence of zero sound and second sound modes. Work was also pres ented on various aspects of phonon interaction with free electrons in metals and semiconductors. A substantial part of the Conference was devoted to phonon spectroscopy - investigations of the energy levels of ions or neutral impurities by observing the resonant absorp tion or scattering of phonons. The materials being studied include paramagnetic and parae1ectric solids, amorphous systems in which the 'impurities' appear to be intrinsic, and semiconductors. Work was reported on the use of phonons to observe phase transitions; in some cases the cooperative phase also arises through strong spin phonon coupling. One of the intriguing unsolved problems discussed in detail at the Conference is the Kapitza conductance problem.
Download or read book Report on Research at AFCRL written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1965 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summaries are given of research in the following fields: upper atmosphere physics, microwave physics, space physics, terrestrial sciences, optical physics, data sciences, meteorology, solid state, aerospace instrumentation.
Download or read book The Physics of Phonons written by G.P Srivastava and published by Routledge. This book was released on 2019-07-16 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: There have been few books devoted to the study of phonons, a major area of condensed matter physics. The Physics of Phonons is a comprehensive theoretical discussion of the most important topics, including some topics not previously presented in book form. Although primarily theoretical in approach, the author refers to experimental results wherever possible, ensuring an ideal book for both experimental and theoretical researchers. The author begins with an introduction to crystal symmetry and continues with a discussion of lattice dynamics in the harmonic approximation, including the traditional phenomenological approach and the more recent ab initio approach, detailed for the first time in this book. A discussion of anharmonicity is followed by the theory of lattice thermal conductivity, presented at a level far beyond that available in any other book. The chapter on phonon interactions is likewise more comprehensive than any similar discussion elsewhere. The sections on phonons in superlattices, impure and mixed crystals, quasicrystals, phonon spectroscopy, Kapitza resistance, and quantum evaporation also contain material appearing in book form for the first time. The book is complemented by numerous diagrams that aid understanding and is comprehensively referenced for further study. With its unprecedented wide coverage of the field, The Physics of Phonons will be indispensable to all postgraduates, advanced undergraduates, and researchers working on condensed matter physics.
Download or read book Recent Advances in Microwave Phonon Generation and Detection and Their Application to the Study of Phonon phonon Interactions in Quartz written by J. DE Klerk and published by . This book was released on 1964 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design procedure and considerations for a tunable resonant coaxial microwave cavity are discussed. The design of a practical cavity for use between 1 and 8 Kmc/sec is given. A technique for producing exponentially decaying echo envelops is described. A method of accurately measuring small changes in low attenuation rates is given. Measurements made in quartz at low temperatures and at 1000 mc/sec are described. (Author).
