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Crystallography. --- Phase transformations (Statistical physics) --- Symmetry (Physics)

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Quantum Phase Transitions is the first book to describe in detail the fundamental changes that can occur in the macroscopic nature of matter at zero temperature due to small variations in a given external parameter. The subject plays a central role in the study of the electrical and magnetic properties of numerous important solid state materials. The author begins by developing the theory of quantum phase transitions in the simplest possible class of non-disordered, interacting systems - the quantum Ising and rotor models. Particular attention is paid to their non-zero temperature dynamic and transport properties in the vicinity of the quantum critical point. Several other quantum phase transitions of increasing complexity are then discussed and clarified. Throughout, the author interweaves experimental results with presentation of theoretical models, and well over 500 references are included. The book will be of great interest to graduate students and researchers in condensed matter physics.

Phase transformations (Statistical physics) --- Quantum theory.

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"High-Temperature Thermal Storage Systems Using Phase Change Materials offers an overview of several high-temperature phase change material (PCM) thermal storage systems concepts, developed by several well-known global institutions with increasing interest in high temperature PCM applications such as solar cooling, waste heat and concentrated solar power (CSP). The book is uniquely arranged by concepts rather than categories, and includes advanced topics such as thermal storage material packaging, arrangement of flow bed, analysis of flow and heat transfer in the flow bed, energy storage analysis, storage volume sizing and applications in different temperature ranges. By comparing the varying approaches and results of different research centers and offering state-of-the-art concepts, the authors share new and advanced knowledge from researchers all over the world. This reference will be useful for researchers and academia interested in the concepts and applications and different techniques involved in high temperature PCM thermal storage systems. Offers coverage of several high temperature PCM thermal storage systems concepts developed by several leading research institutionsProvides new and advanced knowledge from researchers all over the worldIncludes a base of material properties throughout"--

Heat storage. --- Phase transformations (Statistical physics)

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Quasicrystals. --- Crystals. --- Phase transformations (Statistical physics) --- Quasicrystals --- Crystals

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This book advances understanding of light-induced phase transitions and nonequilibrium orders that occur in a broken-symmetry system. Upon excitation with an intense laser pulse, materials can undergo a nonthermal transition through pathways different from those in equilibrium. The mechanism underlying these photoinduced phase transitions has long been researched, but many details in this ultrafast, non-adiabatic regime still remain to be clarified. The work in this book reveals new insights into this phenomena via investigation of photoinduced melting and recovery of charge density waves (CDWs). Using several time-resolved diffraction and spectroscopic techniques, the author shows that the light-induced melting of a CDW is characterized by dynamical slowing-down, while the restoration of the symmetry-breaking order features two distinct timescales: A fast recovery of the CDW amplitude is followed by a slower re-establishment of phase coherence, the latter of which is dictated by the presence of topological defects in the CDW. Furthermore, after the suppression of the original CDW by photoexcitation, a different, competing CDW transiently emerges, illustrating how a hidden order in equilibrium can be unleashed by a laser pulse. These insights into CDW systems may be carried over to other broken-symmetry states, such as superconductivity and magnetic ordering, bringing us one step closer towards manipulating phases of matter using a laser pulse.

Charge density waves. --- Phase transformations (Statistical physics) --- Broken symmetry (Physics)