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Related papers: \delta-doped LaAlO3-SrTiO3 interface: Electrical t…

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The highly conductive two-dimensional electron gas formed at the interface between insulating SrTiO$_3$ and LaAlO$_3$ shows low-temperature superconductivity coexisting with inhomogeneous ferromagnetism. The Rashba spin-orbit interaction…

Superconductivity · Physics 2013-12-30 N. Mohanta , A. Taraphder

In GO/MoSe2 semiconductor heterostructure, we have demonstrated a subtle control on the doping dynamics by modulating interlayer coupling through the combination of strain-reducing relative rotation of the constituting layers and variation…

The interface electronic structure of correlated LaTiO$_3$/SrTiO$_3$ superlattices is investigated by means of the charge self-consistent combination of the local density approximation (LDA) to density functional theory (DFT) with dynamical…

Strongly Correlated Electrons · Physics 2013-06-07 Frank Lechermann , Lewin Boehnke , Daniel Grieger

The interface between the polar LaAlO$_3$ and nonpolar SrTiO$_3$ layers has been shown to exhibit various electronic and magnetic phases such as two dimensional electron gas, superconductivity, magnetism and electronic phase separation.…

Strongly Correlated Electrons · Physics 2012-08-31 A. Annadi , A. Putra , Z. Q. Liu , X. Wang , K. Gopinadhan , Z. Huang , S. Dhar , T. Venkatesan , Ariando

STM based magnetotransport measurements of epitaxial La$_{0.7}$Sr$_{0.3}$MnO$_3$ 32 nm thick films with and without an internal LaMnO$_3$ layer (0-8 nm thick) grown on Nb doped SrTiO$_3$ are presented. The measurements reveal two types of…

Mesoscale and Nanoscale Physics · Physics 2015-06-22 Asmund Monsen , Jos E. Boschker , Per Nordblad , Roland Mathieu , Thomas Tybell , Erik Wahlström

The control of chemical exchange across heterointerfaces formed between ultra-thin functional transition-metal oxide layers provides an effective route to manipulate the electronic properties of these systems. We show that cationic exchange…

We present a tight binding description of electronic properties of the interface between LaAlO$_3$ (LAO) and SrTiO$_3$ (STO). The description assumes LAO and STO perovskites as sets of atomic layers in the $x$-$y$ plane, which are weakly…

Strongly Correlated Electrons · Physics 2016-01-20 V. A. Stephanovich , V. K. Dugaev , J. Barnaś

Ferromagnetism and superconductivity are in most cases adverse. However, recent experiments reveal that they coexist at interfaces of LaAlO3 and SrTiO3. We analyze the magnetic state within density functional theory and provide evidence…

Strongly Correlated Electrons · Physics 2012-01-20 N. Pavlenko , T. Kopp , E. Y. Tsymbal , G. A. Sawatzky , J. Mannhart

A 2D electron gas system in an oxide heterostructure serves as an important playground for novel phenomena. Here, we show that, by using fractional delta-doping to control the interface's composition in LaxSr1-xTiO3/SrTiO3 artificial oxide…

Strongly Correlated Electrons · Physics 2012-09-28 Woo Seok Choi , Suyoun Lee , Valentino R. Cooper , Ho Nyung Lee

Emergent phases in the two-dimensional electron gas (2DEG) formed at the interface between two insulating oxides have attracted great attention in the past decade. We present ab-initio electronic structure calculations for the interface…

Materials Science · Physics 2015-12-24 Hrishit Banerjee , Sumilan Banerjee , Mohit Randeria , Tanusri Saha-Dasgupta

The two-dimensional electron gas (2DEG) at the LaAlO$_3$/SrTiO$_3$ interface exhibits gate tunable superconductivity with a domelike shape of $T_{\rm{C}}$ as a function of electron concentration. Here, we propose that the experimentally…

Superconductivity · Physics 2020-08-26 M. Zegrodnik , P. Wójcik

First-principles calculations were performed to investigate the electronic structure and the Fermi surface of the newly discovered low-temperature superconductor: fluorine-doped WO3. We find that F doping provides the transition of the…

Superconductivity · Physics 2015-06-03 I. R. Shein , A. L. Ivanovskii

The unconventional magnetotransport at the interface between transition-metal oxides $LaAlO_3$ (LAO) and $SrTiO_3$ (STO) is frequently related to mobile electrons interacting with localized magnetic moments. However nature and properties of…

Mesoscale and Nanoscale Physics · Physics 2017-05-30 N. Bovenzi , M. Diez

We report strong localization of 2D electron gas in LaAlO3 / SrTiO3 epitaxial thin-film heterostructures grown on (LaAlO3)0.3-(Sr2AlTaO3)0.7 substrates by using pulsed laser deposition with in-situ reflection high-energy electron…

Strongly Correlated Electrons · Physics 2015-05-30 T. Hernandez , C. W. Bark , D. A. Felker , C. B. Eom , M. S. Rzchowski

We develop a procedure to determine the portion of exact Hartree-Fock exchange interaction contained in a hybrid density functional to treat the range of electronic correlation governing the physics of a system as a function of a…

Materials Science · Physics 2016-02-26 Pablo Rivero , Vincent Meunier , William Shelton

In spite of Anderson's theorem, disorder is known to affect superconductivity in conventional s-wave superconductors. In most superconductors, the degree of disorder is fixed during sample preparation. Here we report measurements of the…

Strongly Correlated Electrons · Physics 2018-07-18 S. Davis , Z. Huang , K. Han , Ariando , T. Venkatesan , V. Chandrasekhar

Oxide interfaces, including the LaAlO3/SrTiO3 interface, have been a subject of intense interest for over a decade due to their rich physics and potential as low dimensional nanoelectronic systems. The field has reached the stage where…

The recent discovery of superconducting interfaces in the $KTaO_3 (111)$-based heterostructures is intriguing, since a much higher superconducting critical temperature (TC ~ 2 K) is achieved compared to that in the $SrTiO_3$…

Superconductivity · Physics 2021-11-12 Weiliang Qiao , Yang Ma , Jiaojie Yan , Wenyu Xing , Yunyan Yao , Ranran Cai , Boning Li , Richen Xiong , X. C. Xie , Xi Lin , Wei Han

The structural and electronic properties of the LaAlO3/Si(001) interface are determined using state-of-the-art electronic structure calculations. The atomic structure differs from previous proposals, but is reminiscent of La adsorption…

Materials Science · Physics 2016-08-31 Clemens J. Foerst , Karlheinz Schwarz , Peter E. Bloechl

We report magneto-transport properties of heterointerfaces between the Mott insulator LaTiO3 and the band insulator SrTiO3 in a delta-doping geometry. At low temperatures, we have found a strong nonlinearity in the magnetic field dependence…

Strongly Correlated Electrons · Physics 2015-05-18 J. S. Kim , S. S. A. Seo , M. F. Chisholm , R. K. Kremer , H. -U. Habermeier , B. Keimer , H. N. Lee
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