This book, the first of this kind, provides a comprehensive
introduction to ultrafast phenomena, covering the fundamentals of
ultrafast spin and charge dynamics, femtosecond magnetism,
all-optical spin switching, and high-harmonic generation. It covers
the experimental tools, including ultrafast pump-probe experiments,
and theoretical methods including quantum chemistry and density
functional theory, both time-independent and time-dependent. The
authors explain in clear language how an ultrafast laser pulse is
generated experimentally, how it can induce rapid responses in
electrons and spins in molecules, nanostructures and solids
(magnetic materials and superconductors), and how it can create
high-harmonic generation from atoms and solids on the attosecond
timescale. They also show how this field is driving the next
generation of magnetic storage devices through femtomagnetism,
all-optical spin switching in ferrimagnets and beyond, magnetic
logic in magnetic molecules, and ultrafast intense light sources,
incorporating numerous computer programs, examples, and problems
throughout, to show how the beautiful research can be done behind
the scene. Key features: * Provides a clear introduction to modern
ultrafast phenomena and their applications in physics, chemistry,
materials sciences, and engineering. * Presents in detail how
high-harmonic generation occurs in atoms and solids. * Explains
ultrafast demagnetization and spin switching, a new frontier for
development of faster magnetic storage devices. * Includes numerous
worked-out examples and problems in each chapter, with real
research codes in density functional theory and quantum chemical
calculations provided in the chapters and in the Appendices. This
book is intended for undergraduate and graduate students,
researchers in physics, chemistry, biology, materials sciences, and
engineering.
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