Fast nonthermal processes in pulsed laser deposition
Jeffrey G. Ulbrandt,Xiaozhi Zhang,Randall L. Headrick,Rui Liu,Matthew Dawber,Kenneth Evans-Lutterodt +5 more
TLDR
In this article, in situ x-ray scattering was used to study homoepitaxy properties of particles with kinetic energies of less than 10 eV for both energetic deposition and thermalization by He background gas.Abstract:
Pulsed laser deposition (PLD) is widely used to grow epitaxial thin films of quantum materials. Here, we use in situ x-ray scattering to study homoepitaxy of ${\mathrm{SrTiO}}_{3}$ by energetic deposition (e-PLD) versus PLD thermalized by a He background gas (th-PLD). Energetic PLD suppresses the lateral growth of two-dimensional islands, which suggests that particles with kinetic energies of $\ensuremath{\sim}100$ eV break up smaller islands. Fast interlayer transport occurs for th-PLD as well as e-PLD, implying a process operating on submicrosecond time scales for incident particles with kinetic energies below 10 eV.read more
Citations
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Instrument for in situ hard x-ray nanobeam characterization during epitaxial crystallization and materials transformations.
Samuel D. Marks,Peiyu Quan,Rui Liu,Matthew J. Highland,Hua Zhou,Thomas F. Kuech,G. Brian Stephenson,Paul G. Evans +7 more
TL;DR: In this paper, an in situ synchrotron hard x-ray instrument was used to study the structural and chemical properties of solid-phase epitaxy (SPE) and other three-dimensional epitaxial crystallization processes.
References
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Journal ArticleDOI
A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface
TL;DR: A model interface is examined between two insulating perovskite oxides—LaAlO3 and SrTiO3—in which the termination layer at the interface is controlled on an atomic scale, presenting a broad opportunity to tailor low-dimensional charge states by atomically engineered oxide heteroepitaxy.
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Nucleation and growth of thin films
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Superconducting Interfaces Between Insulating Oxides
Nicolas Reyren,Stefan Thiel,Andrea D. Caviglia,L. Fitting Kourkoutis,German Hammerl,Christoph Richter,Christof W. Schneider,Thilo Kopp,Anna-Sabina Ruetschi,Didier Jaccard,Marc Gabay,David A. Muller,Jean-Marc Triscone,Jochen Mannhart +13 more
TL;DR: This work reports on superconductivity in the electron gas formed at the interface between two insulating dielectric perovskite oxides, LaAlO3 and SrTiO3.
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Electric field control of the LaAlO3/SrTiO3 interface ground state.
Andrea D. Caviglia,Stefano Gariglio,Nicolas Reyren,Didier Jaccard,T. Schneider,Marc Gabay,Stefan Thiel,German Hammerl,Jochen Mannhart,Jean-Marc Triscone +9 more
TL;DR: The electrostatic tuning of the carrier density allows an on/off switching of superconductivity and drives a quantum phase transition between a two-dimensional superconducting state and an insulating state, which opens the way to the development of new mesoscopicsuperconducting circuits.
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Strong polarization enhancement in asymmetric three-component ferroelectric superlattices
TL;DR: The data reveal that the specific interface structure and local asymmetries play an unexpected role in the polarization enhancement, and it is shown that even superlattices containing only single-unit-cell layers of BaTiO3 in a paraelectric matrix remain ferroelectric.