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Nonequilibrium Dynamics of Collective Excitations in Quantum Materials (Hardcover, 1st ed. 2018)
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Nonequilibrium Dynamics of Collective Excitations in Quantum Materials (Hardcover, 1st ed. 2018)
Series: Springer Theses
Expected to ship within 10 - 15 working days
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This book studies the dynamics of fundamental collective
excitations in quantum materials, focusing on the use of
state-of-the-art ultrafast broadband optical spectroscopy.
Collective behaviour in solids lies at the origin of several
cooperative phenomena that can lead to profound transformations,
instabilities and phase transitions. Revealing the dynamics of
collective excitations is a topic of pivotal importance in
contemporary condensed matter physics, as it provides information
on the strength and spatial distribution of interactions and
correlation. The experimental framework explored in this book
relies on setting a material out-of-equilibrium by an ultrashort
laser pulse and monitoring the photo-induced changes in its optical
properties over a broad spectral region in the visible or
deep-ultraviolet. Collective excitations (e.g. plasmons, excitons,
phonons...) emerge either in the frequency domain as spectral
features across the probed range, or in the time domain as coherent
modes triggered by the pump pulse. Mapping the temporal evolution
of these collective excitations provides access to the hierarchy of
low-energy phenomena occurring in the solid during its path towards
thermodynamic equilibrium. This methodology is used to investigate
a number of strongly interacting and correlated materials with an
increasing degree of internal complexity beyond conventional band
theory.
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