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This book by Kaplan and Vekhter brings together the molecular world
of the chemist with the condensed matter world of the physicist.
Prior to the collapse of the Soviet Union, chemists in the West
devoted lit to relationships between molecular electronic structure
and tle attention solid-state vibronic phenomena. Treating quantum
mechanical problems wherein the adiabatic Born-Oppenheimer
approximation fails was done by "brute force. " With bigger and
better computers available in the West, molecular orbital
calculations were done on observed and conceived static structures
with little concern for any cooperativity of vibrational behavior
that might connect these states. While it had long been understood
in the West that situations do occur in which different static
structures are found for molecules that have identical or nearly
identical electronic structures, little attention had been paid to
understanding the vibrational states that could connect such
structures. It was easier to calculate the electronic structure
observed with several possible distortions than to focus on ways to
couple electronic and vibrational behavior. In the former Soviet
Union, computational power was not as acces sible as in the West.
Much greater attention, therefore, was devoted to conserving
computational time by considering fundamental ways to han dle the
vibrational connectivity between degenerate or nearly degenerate
electronic states.
This book is based mostly on the reports presented at the XVth
International lahn-Teller Symposium on Vibronic Interactions in
Crystals and Molecules and NATO Advanced Research Workshop Colossal
Magnetoresistance and Vibronic Interactions that took place at
Boston on August 16-22 of the year 2000. This is the first time the
Symposium took place in the USA where recently the giant splash of
the attention to the 1 ahn-Teller effect occurred. This tremendous
interest to the field all over the world is reflected not only in
the numerous publications in many American and European 10urnals,
but of the leading scientists from additionally in the Symposium's
participation the well known Universities, National Laboratories
and industrial companies, which was the largest in the history of
the Symposium. The renaissance of the 1ahn-Teller physics is
closely related to the three fundamental discoveries in science.
The most significant among them is the discovery of high-Tc
superconductivity by K. -A. Muller and G. Bednorz, for whom the
"1ahn-Teller idea" was the motivation in their search. The result
of this search is well known - a wide spectrum of the 1ahn-Teller
ion based materials with Tc between 24K and 135K were found. The
second discovery is the existence of a new polymorph of carbon -
the C60. The microscopic analysis of all physical, chemical and
biological properties of the buckyballs is based on 1ahn-Teller
type of interactions. The third is colossal magnetoresistance.
This book is based mostly on the reports presented at the XVth
International lahn-Teller Symposium on Vibronic Interactions in
Crystals and Molecules and NATO Advanced Research Workshop Colossal
Magnetoresistance and Vibronic Interactions that took place at
Boston on August 16-22 of the year 2000. This is the first time the
Symposium took place in the USA where recently the giant splash of
the attention to the 1 ahn-Teller effect occurred. This tremendous
interest to the field all over the world is reflected not only in
the numerous publications in many American and European 10urnals,
but of the leading scientists from additionally in the Symposium's
participation the well known Universities, National Laboratories
and industrial companies, which was the largest in the history of
the Symposium. The renaissance of the 1ahn-Teller physics is
closely related to the three fundamental discoveries in science.
The most significant among them is the discovery of high-Tc
superconductivity by K. -A. Muller and G. Bednorz, for whom the
"1ahn-Teller idea" was the motivation in their search. The result
of this search is well known - a wide spectrum of the 1ahn-Teller
ion based materials with Tc between 24K and 135K were found. The
second discovery is the existence of a new polymorph of carbon -
the C60. The microscopic analysis of all physical, chemical and
biological properties of the buckyballs is based on 1ahn-Teller
type of interactions. The third is colossal magnetoresistance.
This book by Kaplan and Vekhter brings together the molecular world
of the chemist with the condensed matter world of the physicist.
Prior to the collapse of the Soviet Union, chemists in the West
devoted lit to relationships between molecular electronic structure
and tle attention solid-state vibronic phenomena. Treating quantum
mechanical problems wherein the adiabatic Born-Oppenheimer
approximation fails was done by "brute force. " With bigger and
better computers available in the West, molecular orbital
calculations were done on observed and conceived static structures
with little concern for any cooperativity of vibrational behavior
that might connect these states. While it had long been understood
in the West that situations do occur in which different static
structures are found for molecules that have identical or nearly
identical electronic structures, little attention had been paid to
understanding the vibrational states that could connect such
structures. It was easier to calculate the electronic structure
observed with several possible distortions than to focus on ways to
couple electronic and vibrational behavior. In the former Soviet
Union, computational power was not as acces sible as in the West.
Much greater attention, therefore, was devoted to conserving
computational time by considering fundamental ways to han dle the
vibrational connectivity between degenerate or nearly degenerate
electronic states.
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