49 citations · 163 across the 10 of their papers we have counts for
10 papers
Nanoscale SrIrO Freestanding Thin-Films for Flexible Electronics
Sujan Shrestha, Matthew Coile, Menglin Zhu +7
We report the structural and optical properties of nanoscale Sr2IrO4 freestanding thin-films fabricated using a water-soluble Sr3Al2O6 layer. The coherent lattice structure, phonon…
Observation of the Surface Layer of Lithium Metal using In Situ Spectroscopy
Ambrose Seo, Andrew Meyer, Sujan Shrestha +3
We have investigated the surface of lithium metal using x-ray photoemission spectroscopy and optical spectroscopic ellipsometry. Even if we prepare the surface of lithium metal rig…
Investigations of Graphene on SrTiO3 Single-Crystal using Confocal Raman Spectroscopy
S. Shrestha, C. S. Chang, S. Lee +5
Graphene layers placed on SrTiO3 single-crystal substrates were investigated using temperature-dependent confocal Raman spectroscopy. This approach successfully resolved distinct R…
Atomistic Engineering of Phonons in Functional Oxide Heterostructures
Seung Gyo Jeong, Ambrose Seo, Woo Seok Choi
Engineering of phonons, i.e., collective lattice vibrations in crystals, is essential for manipulating physical properties of materials such as thermal transport, electron-phonon i…
Unconventional interlayer exchange coupling via chiral phonons in synthetic magnetic oxide heterostructures
Seung Gyo Jeong, Jiwoong Kim, Ambrose Seo +7
Chiral symmetry breaking of phonons plays an essential role in emergent quantum phenomena owing to its strong coupling to spin degree of freedom. However, direct experimental evide…
Compressive-strain induced enhancement of exchange interactions and short-range magnetic order in SrIrO investigated by Raman spectroscopy
A. Seo, P. P. Stavropoulos, H. -H. Kim +7
We have carried out Raman spectroscopy experiments to investigate two-magnon excitations in epitaxial thin films of the quasi-two-dimensional antiferromagnetic Mott insulator Sr$_2…
Optical Characteristics of Charge Carrier Transfer across Interfaces between YBaCuO and LaCaMnO
A. Seo, A. V. Boris, G. Cristiani +2
We report a spectral ellipsometry study of multilayers composed of superconducting YBaCuO (YBCO) and ferromagnetic LaCaMnO in the spectral range…
Unconventional anomalous Hall effect from antiferromagnetic domain walls of Nd2Ir2O7 thin films
Woo Jin Kim, John H. Gruenewald, Taekoo Oh +11
Ferroic domain walls (DWs) create different symmetries and ordered states compared with those in single-domain bulk materials. In particular, the DWs of an antiferromagnet (AFM) wi…
Electronic and optical properties of La-doped SrIrO epitaxial thin-films
M. Souri, J. Terzic, J. M. Johnson +7
We have investigated structural, transport, and optical properties of tensile strained (SrLa)IrO (x = 0, 0.025, 0.05) epitaxial thin-films. While High-T…
Optical Signatures of Spin-Orbit Exciton in Bandwidth Controlled SrIrO Epitaxial Films via High-Concentration Ca and Ba Doping
M. Souri, B. H. Kim, J. H. Gruenewald +8
We have investigated the electronic and optical properties of (SrCa)IrO (x= 0 - 0.375) and (SrBa)IrO (y= 0 - 0.375) epitaxial thin-films,…