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Strain tunable electronic ground states in two-dimensional iridate thin films

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Title
Strain tunable electronic ground states in two-dimensional iridate thin films
Author(s)
Donghan Kim; Sohn, Byungmin; Yeonjae Lee; Jeongkeun Song; Kim, Mi Kyung; Kim, Minjae; Tae Won Noh; Changyoung Kim
Publication Date
2024-06
Journal
Applied Surface Science, v.657
Publisher
Elsevier BV
Abstract
Quantum phases of matter such as superconducting, ferromagnetic and Wigner crystal states are often driven by the two-dimensionality (2D) of correlated systems. Meanwhile, spin–orbit coupling (SOC) is a fundamental element leading to nontrivial topology which gives rise to quantum phenomena such as the large anomalous Hall effect and nontrivial superconductivity. However, the search for controllable platforms with both 2D and SOC has been relatively overlooked so far. Here, we control and study the electronic ground states of iridate ultrathin films having both 2D and SOC by angle-resolved photoemission spectroscopy (ARPES) and dynamical mean field theory (DMFT) calculations. The metallicity of SrIrO3 ultrathin films is controlled down to a monolayer by dimensional and strain manipulation. Our results suggest that the iridate ultrathin films can be a controllable 2D SOC platform exhibiting a variety of phenomena for future functional devices. © 2024
URI
https://pr.ibs.re.kr/handle/8788114/15127
DOI
10.1016/j.apsusc.2024.159801
ISSN
0169-4332
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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