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Extensive studies of high-Tc cuprate superconductors have
stimualted investigations into various transition-metal oxides.
Mott transitions in particular provide fascinating problems and new
concepts in condensed matter physics. This book is a collection of
overviews by well-known, active researchers in this field. It deals
with the latest developments, with particular emphasis on the
theoretical, spectroscopic, and transport aspects.
Extensive studies of high-Tc cuprate superconductors have
stimualted investigations into various transition-metal oxides.
Mott transitions in particular provide fascinating problems and new
concepts in condensed matter physics. This book is a collection of
overviews by well-known, active researchers in this field. It deals
with the latest developments, with particular emphasis on the
theoretical, spectroscopic, and transport aspects.
With the developing progress of materials fabrication, it is
possible to produce materials with exciting electronic and magnetic
properties which may be candidates for future device applications.
One key class of these materials is the metallic magnetic oxide
systems. This book focuses on colossal magnetoresistance (CMR)
materials, including manganites and cobalites. Transport and
magnetic properties and their dependence on stress, growth
conditions, stoichiometry and elemental composition are explored
quite extensively. However, the large magnetic fields required to
obtain the CMR effect have been perceived as a technological
roadblock for commercialization of this phenomenon. This has
motivated research aimed both at reducing the intrinsic field
dependence as well as at developing novel device structures that
will reduce the required effective field. Technologically useful
devices will undoubtedly involve heterostructures. Since the
magnetic and transport properties are extremely stress-dependent,
CMR heterostructures will most likely involve other metallic or
insulating oxide materials. Materials of interest include
half-metallic ferromagnets, yttrium garnet materials and ferrites.
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