This thesis explores thermal transport in selected rare-earth-based intermetallic compounds to answer questions of great current interest. It also sheds light on the interplay of Kondo physics and Fermi surface changes.
By performing thermal conductivity and electrical resistivity measurements at temperatures as low as 25mK, the author demonstrates that the Wiedemann–Franz law, a cornerstone of metal physics, is violated at precisely the magnetic-field-induced quantum critical point of the heavy-fermion metal YbRh2Si2. This first-ever observation of a violation has dramatic consequences, as it implies a breakdown of the quasiparticle picture.
Utilizing an innovative technique to measure low-temperature thermal transport isothermally as a function of the magnetic field, the thesis interprets specific, partly newly discovered, high-field transitions in CeRu2Si2 and YbRh2Si2 as Lifshitz transitions related to a change in the Fermi surface.
Lastly, by applying this new technique to thermal conductivity measurements of the skutterudite superconductor LaPt4Ge12, the thesis proves that the system is a conventional superconductor with a single energy gap. Thus, it refutes the widespread speculations about unconventional Cooper pairing in this material.
Описание: Symposium JJ on `Intermetallic-Based Alloys: Science, Technology and Applications` was held from November 26-28 at the 2012 MRS Fall Meeting in Boston, Massachusetts. This volume gives a representative overview of the current state of research on intermetallic phases and identifies areas for future research.
Автор: Paul, Aloke Название: Handbook of Solid State Diffusion: Volume 2 ISBN: 0128045485 ISBN-13(EAN): 9780128045480 Издательство: Elsevier Science Рейтинг: Цена: 33013.00 р. Наличие на складе: Поставка под заказ.
Описание:
Handbook of Solid State Diffusion, Volume 2: Diffusion Analysis in Material Applications covers the basic fundamentals, techniques, applications, and latest developments in the area of solid-state diffusion, offering a pedagogical understanding for students, academicians, and development engineers. Both experimental techniques and computational methods find equal importance in the second of this two volume set.
Volume 2 covers practical issues on diffusion phenomena in bulk, thin film, and in nanomaterials. Diffusion related problems and analysis of methods in industrial applications, such as electronic industry, high temperature materials, nuclear materials, and superconductor materials are discussed.
Presents a handbook with a short mathematical background and detailed examples of concrete applications of the sophisticated methods of analysis
Enables readers to learn the basic concepts of experimental approaches and the computational methods involved in solid-state diffusion
Covers bulk, thin film, and nanomaterials
Introduces the problems and analysis in important materials systems in various applications
Collates contributions from academic and industrial problems from leading scientists involved in developing key concepts across the globe
Автор: Paul, Aloke Название: Handbook of Solid State Diffusion: Volume 1 ISBN: 0128042877 ISBN-13(EAN): 9780128042878 Издательство: Elsevier Science Рейтинг: Цена: 29139.00 р. Наличие на складе: Поставка под заказ.
Описание:
Handbook of Solid State Diffusion, Volume 1: Diffusion Fundamentals and Techniques covers the basic fundamentals, techniques, applications, and latest developments in the area of solid-state diffusion, offering a pedagogical understanding for students, academicians, and development engineers. Both experimental techniques and computational methods find equal importance in the first of this two-volume set.
Volume 1 covers the fundamentals and techniques of solid-state diffusion, beginning with a comprehensive discussion of defects, then different analyzing methods, and finally concluding with an exploration of the different types of modeling techniques.
Presents a handbook with a short mathematical background and detailed examples of concrete applications of the sophisticated methods of analysis
Enables readers to learn the basic concepts of experimental approaches and the computational methods involved in solid-state diffusion
Covers bulk, thin film, and nanomaterials
Introduces the problems and analysis in important materials systems in various applications
Collates contributions from academic and industrial problems from leading scientists involved in developing key concepts across the globe
Автор: Depner, Joe S., Название: Hydrodynamics of time-periodic groundwater flow : ISBN: 1119133947 ISBN-13(EAN): 9781119133940 Издательство: Wiley Рейтинг: Цена: 23277.00 р. Наличие на складе: Поставка под заказ.
Описание:
Hydrodynamics of Time-Periodic Groundwater Flow introduces the emerging topic of periodic fluctuations in groundwater. While classical hydrology has often focused on steady flow conditions, many systems display periodic behavior due to tidal, seasonal, annual, and human influences. Describing and quantifying subsurface hydraulic responses to these influences may be challenging to those who are unfamiliar with periodically forced groundwater systems. The goal of this volume is to present a clear and accessible mathematical introduction to the basic and advanced theory of time-periodic groundwater flow, which is essential for developing a comprehensive knowledge of groundwater hydraulics and groundwater hydrology.
Volume highlights include:
Overview of time-periodic forcing of groundwater systems
Definition of the Boundary Value Problem for harmonic systems in space and time
Examples of 1-, 2-, and 3-dimensional flow in various media
Attenuation, delay, and gradients, stationary points and flow stagnation
Wave propagation and energy transport
Hydrodynamics of Time-Periodic GroundwaterFlow presents numerous examples and exercises to reinforce the essential elements of the theoretical development, and thus is eminently well suited for self-directed study by undergraduate and graduate students. This volume will be a valuable resource for professionals in Earth and environmental sciences who develop groundwater models., including in the fields of groundwater hydrology, soil physics, hydrogeology, geoscience, geophysics, and geochemistry. Time-periodic phenomena are also encountered in fields other than groundwater flow, such as electronics, heat transport, and chemical diffusion. Thus, students and professionals in the field of chemistry, electronic engineering, and physics will also find this book useful.
Read an interview with the editors to find out more: https: //eos.org/editors-vox/a-foundation-for-modeling-time-periodic-groundwater-flow
Автор: Gerhard Neumann Название: Self-diffusion and Impurity Diffusion in Pure Metals,14 ISBN: 1856175111 ISBN-13(EAN): 9781856175111 Издательство: Elsevier Science Рейтинг: Цена: 34529.00 р. Наличие на складе: Поставка под заказ.
Описание: Diffusion in metals is an important phenomenon, which has many applications, for example in all kinds of steel and aluminum production, in alloy formation (technical applications in superconductivity and semiconductor science). This book shows the data on diffusion in metals in graphs and in equations.
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