Spectroscopic Study on Charge-Spin-Orbital Coupled Phenomena in Mott-Transition Oxides

In this book, the author conducts extensive spectroscopy experiments beyond the bounds of each transition element to clarify origins of characteristic spectral features and charge dynamics in charge-spin-orbital coupled phenomena in Mott-transition oxides.

In this thesis the author presents the results of extensive spectroscopy experiments beyond the bounds of each transition element to clarify the origins of characteristic spectral features and charge dynamics in charge-spin-orbital coupled phenomena in Mott-transition oxides. Several counterpart 3d transition-metal oxides were adopted as model systems suitable for examining the mechanisms involved, and their electronic structures were systematically investigated using three main spectroscopy methods. Comparative studies on the charge dynamics and Mott transition features of transition-metal oxides were performed: Charge dynamics and thermoelectricity in a typical Mott transition system La1xSrxVO3, charge dynamics in a doped valence-bond solid system (Ti1xVx)2O3 and in layered nickelates R2-xSrxNiO4 with charge-ordering instability are investigated thoroughly. The results obtained successfully provide a number of novel insights into the emergent phenomena near the Mott transition.

Explains original comparison experiments focusing on rarely studied materials Presents systematic spectroscopy measurements with use of ARPES at the highest energy resolution possible Nominated as an outstanding Ph.D thesis by University of Tokyo's Applied Physics Department in 2012 Includes supplementary material: sn.pub/extras

Auteur
Dr. Masaki Uchida
Department of Applied Physics, University of Tokyo
http://masakiuchida.com/

Contenu
Introduction.- Experimental Methods.- Charge Dynamics and Thermoelectricity in a Typical System.- Charge Dynamics in a Doped Valence-Bond Solid System.- Charge Dynamics in Layered Nickelates with Charge-Ordering Instability.- Summary.