|
|
|
|
|
|
|
|
|
||
|
University of Cambridge > Department of Physics. Cavendish Laboratory > Theory of Condensed Matter > CoMePhS |
||
|
|
Introduction The Project The
CoMePhS project is a multicentered project to investigate and understand the physics
that could be used to develop electronic devices in a highly powerful and
novel way. Conventionally,
electronic device functions are generated by combining various materials, in
which each material has one particular functionality. With the atomic limit
as the ultimate achievable goal in sight, we try to explore methods that do
not need extensive use of top-down nanotechnology, including lithography and
deposition/etching techniques, but use device structures that are
spontaneously created by nature in the general framework of electronic phase
separation. Here one material can adopt more than one electronic state, and
by judicious organization of these electronic states device functions can be
generated with built-in atomic precision. In a number of materials like
manganites, a spectacularly diverse range of exotic magnetic, electronic and
crystal structures can coexist at different locations on the same crystal. The
Theoretical Programme The
theoretical programme ranges from the macroscopic modeling of models for
phase coexistence and phase separation, to ab initio microscopic
theory of defect structures. Some of the objectives are:
·
Model-based microscopic theory at the atomic scale with
orbital, spin, and elastic degrees of freedom to underpin the phenomenology
and to compare to experimental results on transport, optics, magnetic and
crystal structure. ·
Ab initio electronic modeling to provide a firm basis for
models used and also to address microscopic issues (photoemission, EELS) of
domain wall and twin boundary structures. |
|
|
|
|
|
|
|
|
|
