Dissertation/Thesis Abstract

Study of the Electronic Properties of Sodium Iridate
by Rodriguez, Josue, M.S., California State University, Long Beach, 2019, 96; 22587591
Abstract (Summary)

Sodium iridate (Na2IrO3) is a spin-orbit assisted Mott insulator and in the frame work of the Kitaev-Heisenberg model holds exotic physics with possible applications in quantum computation. We have integrated thin crystal into nanoelectronic devices and through electronic trans- port measurements we have identified the dominate transport mechanism as Mott variable range hopping (VRH). Complementary angle-resolved photoemission spectroscopy (ARPES) measure- ments on cleaved samples of Na2IrO3 show a non-zero density of states near the Fermi energy that mediates VRH characteristic of the bulk. Raman experiments in our thin crystals shows Ra- man active modes consistent with the bulk. Through transport we observe a trace of a change in the transport mechanism in a temperature region near 15 K, the magnetic ordering temperature reported for the bulk crystal.

Indexing (document details)
Advisor: Ojeda-Aristizabal, Claudia
Commitee: Kwon, Chuhee, Papp, Zoltan
School: California State University, Long Beach
Department: Physics and Astronomy
School Location: United States -- California
Source: MAI 81/4(E), Masters Abstracts International
Subjects: Physics
Keywords: Condensed matter physics, Correlated materials, Electronic transport, Kitaev materials, Mott insulator, Nanodevices
Publication Number: 22587591
ISBN: 9781687991133
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