Spectroscopic Study on Charge-Spin-Orbital Coupled Phenomena in Mott-Transition Oxides
By: by Masaki Uchida
Contributors: SpringerLink (Online service)
Series: Springer Theses, Recognizing Outstanding Ph.D. Research
Publisher: Springer Japan; Imprint: Springer
Published: 2013
Place of publication: Tokyo
Language: eng
Format: [electronic resource] /
Number of pages: 103
ISBN-13: 9784431542971
Subjects: Spectroscopy and Microscopy; Physics; Superconductivity Strongly Correlated Systems; Optical and Electronic Materials; Optical materials
Description: 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 La1-XSrXVO3, charge dynamics in a doped valence-bond solid system (Ti1−xVx)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.
Table of contents: title: Introduction; title: Experimental Methods; title: Charge Dynamics and Thermoelectricity in a Typical System; title: Charge Dynamics in a Doped Valence-Bond Solid System; title: Charge Dynamics in Layered Nickelates with Charge-Ordering Instability; title: Summary.