Emerging phenomena in oxide heterostructures

Oxide interfaces have attracted considerable attention in recent years due to emerging novel properties that do not exist in the corresponding parent compounds. Furthermore, modern atomic-scale growth and probe techniques enable the formation and study of new artificial interface states distinct from the bulk state. A central issue in controlling the novel behavior in oxide heterostructures is to understand how various physical variables (spin, charge, lattice and/or orbital hybridization) interact with each other. In particular, density function theory (DFT) has provided significant insight into underlying physics of materials at the atomic level, giving quantitative results consistent with experiment. In this dissertation using density functional theory methods, we explore the electronic, magnetic and structural properties developed near the interface in SrTiO3/LaAlO3, EuO/LaAlO3, Fe/PbTiO3/Pt, Fe//BaTiO3/Pt and Cs/SrTiO3 heterostructures. We study the interplay between physical interactions, and quantify parameters that determine physical properties of hetetrostructures. These theoretical studies help understanding how physical variables couple with each other and how they determine new properties at oxide interfaces.

Name thesis:degree_name

Doctor of Philosophy

Level thesis:degree_level

Doctoral

Discipline thesis:degree_discipline

Physics

Grantor

University of Texas at Austin

Year dc:date.issued

2010

Author dc:creator

• Lee, Jaekwang

Advisor dc:contributor.advisor

• Demkov, Alexander A.

Committee members dc:contributor.committeemember

• Kleinman, Leonard
• Chelikowsky, James R.
• MacDonald, Allan H.
• Hwang, Gyeong S.

• Material physics
• Oxides
• Superlattice
• DFT
• Magnetoelectric

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/2152/ETD-UT-2010-08-2012

OAI identifier oai:identifier

oai:repositories.lib.utexas.edu:2152/ETD-UT-2010-08-2012