Ebook: Vibronic Interactions: Jahn-Teller Effect in Crystals and Molecules

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.

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The Jahn-Teller effect is manifested in a variety of phenomena in physics, chemistry and biochemistry, in many types of crystals and molecules. This book deals with fundamental questions of the quantum mechanics of systems with orbital electrons, concentrating on novel phenomena and materials such as colossal magnetoresistance, high T_c superconductivity, buckminsterfullerenes, magnetic materials and biologically important clusters. All chapters share a common general approach to the problems, based on the analysis of vibronic interaction: electron-vibrational interaction in molecules and electron-phonon interaction in crystals.
With an introductory address by Edward Teller.

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The Jahn-Teller effect is manifested in a variety of phenomena in physics, chemistry and biochemistry, in many types of crystals and molecules. This book deals with fundamental questions of the quantum mechanics of systems with orbital electrons, concentrating on novel phenomena and materials such as colossal magnetoresistance, high T_c superconductivity, buckminsterfullerenes, magnetic materials and biologically important clusters. All chapters share a common general approach to the problems, based on the analysis of vibronic interaction: electron-vibrational interaction in molecules and electron-phonon interaction in crystals.
With an introductory address by Edward Teller.
Content:
Front Matter....Pages i-xii
Professor Edward Teller’s Address to the Meeting Participants....Pages 1-3
The Jahn-Teller Effect: A Permanent Presence in the Frontiers of Science....Pages 5-14
Orbital Ordering and Vibronic States in Manganese Perovskites....Pages 15-22
Sum Rules for Jahn-Teller Reduction Factors....Pages 23-30
Chemistry of Vibronic Coupling....Pages 31-46
Jahn-Teller Effect and Doping in Manganites....Pages 47-56
Degenerate and Nondegenerate States in Jahn-Teller Problems....Pages 57-72
DFT Calculations of the “Lone Pair” Effect — A Tool for the Chemist to Predict Molecular Distortions?....Pages 73-82
The {E ? E} ? e Vibronic Coupling Case: A Prototypal Product Jahn-Teller System....Pages 83-95
Exchange Variation of Zero-Field Splitting in Polynuclear Clusters with High-Spin Ground State....Pages 97-102
Double Exchange in Orbitally Degenerate Mixed Valence Clusters: Magnetic Anisotropy, Vibronic Effects....Pages 103-110
Singlet Pairing Amongst Degenerate Electronic States: “Softening Bipolarons”....Pages 111-122
Giant Negative Magnetoresistance and Strong Electron-Lattice Coupling in Amorphous Semiconductors with Magnetic Impurities....Pages 123-131
Jahn-Teller Effects in Transition Metal Oxides....Pages 133-140
Magnetoelastic Properties of Jahn-Teller Crystals with Colossal Magnetoresistance....Pages 141-151
Vibronic Effects in Spectroscopy of Heme Proteins....Pages 153-164
Jahn-Teller Clusters in Dielectrics and Cuprates....Pages 165-172
Miscibility In Jahn-Teller Systems....Pages 173-181
The Dynamic Jahn-Teller Effect in High-Tc Superconductors and Water Buckyballs....Pages 183-196
Dopant Induced Enhancement of the Jahn-Teller Effect in Perovskite Cuprates....Pages 197-204
EPR Study of Cu2+ Doped (CnH2n+1NH3)2CdCl4 Crystals (n=1;3) with Layer Structure....Pages 205-208
Nondegenerate Ground Vibronic States in the Linear T?(e+t2) Jahn-Teller Problem....Pages 209-213
Vibronic Model of Double Triangular Mixed-Valence Clusters with Spin Frustration Effects....Pages 215-219
Jahn-Teller Effect in Corannulene Anion....Pages 221-228
Franck-Condon Approximation for Second Order Reduction Factors. Application to Vibronic Reduction in Fullerenes....Pages 229-233
Symmetries of Jahn-Teller States in Charged Fullerenes....Pages 235-241
Quantum-Chemical Approach to Zero-Dimensional Antiferroelectrics and Quantum Paraelectrics of the K3H(SO4)2 Family....Pages 243-246
Influence of Jahn-Teller Ions on Spin-Lattice Relaxation in Ferrimagnets....Pages 247-250
Berryonic Matter in the Cuprates....Pages 251-261
Microscopic Mechanism of Stripe Pairing Phase Formation....Pages 263-268
Vibronic Coupling in Fullerene Systems: An Analysis of Theoretical and Experimental Studies....Pages 269-272
EPR and X-Ray Studies of the Vibronic Effects in Cs2Cu(ZrF6)2.6(H2O) Crystal....Pages 273-276
The Dynamics of the Jahn-Teller Oxides....Pages 277-284
Molecular Mechanisms of Proton Ordering and Formation of Ferroelectric Properties in Systems with 3D, 2D, and 0D Hydrogen Bond Networks....Pages 285-289
Ferroelectric Phase Transitions in a Lattice Pseudo-Jahn-Teller Model....Pages 291-294
Jahn-Teller Polarons in Lightly Doped La1-xSrxMnO3 as Studied by EPR....Pages 295-299
Cubic Ni3+ Centres in LaSrAl1?xNixO4±?....Pages 301-306
Physical Mechanism of the Crossover of Ground State Energy Levels in Linear H?h Systems....Pages 307-311
Jahn-Teller and A1g Vibrations for Mn2+ Doped Fluoroperovskites: Stokes Shift....Pages 313-316
Anharmonic Gap Modes in Alkali Halides....Pages 317-321
Formation of the Jahn-Teller Glassy State in the Mixed Potassium- Ammonium Tuton Salts....Pages 323-327
Back Matter....Pages 329-333
....Pages 335-341