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Electronic characteristics of ultrathin SrRuO films and their relationship with the metalinsulator transition
Subeen Pang, Yoonkoo Kim, Yeong Jae Shin +4
SrRuO (SRO) films are known to exhibit insulating behavior as their thickness approaches four unit cells. We employ electron energyloss (EEL) spectroscopy to probe the spati…
Strong spin-phonon coupling unveiled by coherent phonon oscillations in Ca2RuO4
Min-Cheol Lee, Choong H. Kim, Inho Kwak +8
We utilize near-infrared femtosecond pulses to investigate coherent phonon oscillations of Ca2RuO4. The coherent Ag phonon mode of the lowest frequency changes abruptly not only it…
Electronic Reconstruction Enhanced Tunneling Conductance at Terrace Edges of Ultrathin Oxide Films
Lingfei Wang, Rokyeon Kim, Yoonkoo Kim +10
Quantum mechanical tunneling of electrons across ultrathin insulating oxide barriers has been studied extensively for decades due to its great potential in electronic device applic…
Charge transfer in iridate-manganite superlattices
Satoshi Okamoto, John Nichols, Changhee Sohn +3
Charge transfer in superlattices consisting of SrIrO and SrMnO is investigated using density functional theory. Despite the nearly identical work function and non-polar int…
Controlled manipulation of oxygen vacancies using nanoscale flexoelectricity
Saikat Das, Bo Wang, Ye Cao +8
Oxygen vacancies, especially their distribution, are directly coupled to the electromagnetic properties of oxides and related emergent functionalities that have implication in devi…
Oxygen Partial Pressure during Pulsed Laser Deposition: Deterministic Role on Thermodynamic Stability of Atomic Termination Sequence at SrRuO3/BaTiO3 Interface
Yeong Jae Shin, Lingfei Wang, Yoonkoo Kim +8
With recent trends on miniaturizing oxide-based devices, the need for atomic-scale control of surface/interface structures by pulsed laser deposition (PLD) has increased. In partic…