d-d Excitations in Transition-Metal Oxides: A Spin-Polarized Electron Energy-Loss Spectroscopy (SPEELS) Study (Springer Tracts in Modern Physics)

In this monograph, investigations of the electronic structures of the transition-metal oxides MnO, CoO, and NiO with spin-polarized electron energy-loss spectroscopy are presented and compared with other experimental and theoretical results. After a review of the present knowledge of the electronic structure of the monoxides, the spectroscopic method applied and its special advantages are described. The knowledge and use of the different spin, angle, and primary-energy dependences of the various relevant inelastic electron-scattering mechanisms provide new insights into the excitation processes of the optically forbidden transitions between the crystal-field-split 3d states of the bulk and of the surface. In This Monograph, Investigations Of The Electronic Structures Of The Transition-metal Oxides Mno, Coo, And Nio Using Spin-polarized Electron Energy-loss Spectroscopy Are Presented And Compared With Other Experimental And Theoretical Results. After A Review Of The Present Knowledge Of The Electronic Structure Of The Monoxides, The Spectroscopic Method Applied And Its Special Advantages Are Described. Knowledge And Use Of The Different Spin, Angle, And Primary-energy Dependencies Of The Various Relevant Inelastic Electron-scattering Mechanisms Provide New Insights Into The Excitation Processes Of The Optically Forbidden Transitions Between The Crystal-field-split 3d States Of The Bulk And Of The Surface.--jacket. 1. Introduction -- 2. Electronic Structure Of Mno, Coo, And Nio -- 3. Electron Energy-loss Spectroscopy -- Inelastic Electron Scattering -- 4. Experiment -- 5. Speels Of Transition-metal Oxides -- Results And Discussion -- 6. Summary. Bärel Fromme. Includes Bibliographical References And Index. front-matter......Page 1 d-d Excitations in Transition-Metal Oxides......Page 3 Preface......Page 5 Table of Content......Page 8 1Introduction......Page 10 Index......Page 0 2Electronic Structure of MnO, CoO, and NiO......Page 14 3Electron Energy-Loss Spectroscopy — Inelastic Electron Scattering......Page 36 4Experiment......Page 60 5SPEELS of Transition-Metal Oxides — Results and Discussion......Page 71 6Summary......Page 133 References......Page 138 Index......Page 153