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We report a study on the interface between polar high-k materials and the Si(001)-(2X1) reconstructed surface with LaAlO3 taken as a prototype material. The construction of the interface is based on the prior growth of metal lines followed…

Materials Science · Physics 2015-06-25 Isabelle Devos , Pierre Boulenc

We theoretically investigate the influence of the normal state quantum geometry on the superconducting phase in (111) oriented oxide interfaces and discuss some of the implications for the $\text{LaAlO}_3/\text{SrTiO}_3$ (LAO/STO)…

Superconductivity · Physics 2024-07-19 Florian Simon , Mark O. Goerbig , Marc Gabay

Performing an analysis within density functional theory, we develop insight into the structural and electronic properties of the oxide heterostructure LaAlO3/SrTiO3. Electrostatic surface effects are decomposed from the internal lattice…

Materials Science · Physics 2015-05-13 U. Schwingenschloegl , C. Schuster

Energy band realignment at the interfaces between materials in heterostructures can give rise to unique electronic characteristics and non-trivial low-dimensional charge states. In a homojunction of monolayer and multilayer MoS$_2$, the…

Materials Science · Physics 2017-07-21 Ying Jia , Teodor K. Stanev , Erik J. Lenferink , Nathaniel P. Stern

Graphene serves as an ideal platform to investigate the microscopic structure and reaction kinetics at the graphitic electrode interfaces. However, graphene is susceptible to various extrinsic factors, e.g. substrate, causing much confusion…

Chemical Physics · Physics 2022-07-19 Ying Xu , You-Bo Ma , Feng Gu , Shan-Shan Yang , Chuan-Shan Tian

We show that the growth of the heterostructure LaGaO3/SrTiO3 yields the formation of a highly conductive interface. Our samples were carefully analyzed by high resolution electron microscopy, in order to assess their crystal perfection and…

We investigated electronic structure and magnetic anisotropy in the Fe/MgO interface of magnetic metal and dielectric insulator under the Cr layer of small electronegativity, by means of the first-principles density functional approach. The…

Materials Science · Physics 2017-08-09 Nurul Ikhsan , Tomosato Kanagawa , Indra Pardede , Masao Obata , Tatsuki Oda

The rich phase diagram of the two dimensional electron gas (2DEG) at the \STO/\LAO interface is probed using Hall and longitudinal resistivity. Thanks to a special bridge design we are able to tune through the superconducting transition…

Superconductivity · Physics 2014-02-20 M. Ben Shalom , I. Neder , A. Palevski , Y. Dagan

Graphene is a promising material for applications as a channel in graphene field-effect transistors (GFETs) which may be used as a building block for optoelectronics, high-frequency devices and sensors. However, these devices require gate…

Using classical molecular dynamics simulations, we study austenite to ferrite phase transformation in iron, focusing on the role of interface morphology. We compare two different morphologies; a \textit{flat} interface in which the two…

Materials Science · Physics 2022-09-07 Pawan Kumar Tripathi , Shivraj Karewar , Yu-Chieh Lo , Somnath Bhowmick

In all archetypical reported (001)-oriented perovskite heterostructures, it has been deduced that the preferential occupation of two-dimensional electron gases is in-plane $d_\textrm{xy}$ state. In sharp contrast to this, the investigated…

New Fe-pnictide heterostructures of the type LnOFeAs/BaFe$_2$As$_2$ (Ln = La, Sm) were grown by pulsed laser deposition (PLD) and investigated. Their common structural unit of [Fe$_2$As$_2$] planes allows perfect matching between the…

Superconductivity · Physics 2021-11-01 Silvia Haindl , Sergey Nikolaev , Michiko Sato , Masato Sasase , Ian MacLaren

The interface of complex oxide heterostructures sets the stage for various electronic and magnetic phenomena. Many of these collective effects originate from the precise structural arrangement at the interface that in turn governs local…

Mesoscale and Nanoscale Physics · Physics 2021-03-17 Max Burian , Bill Francesco Pedrini , Nazaret Ortiz Hernandez , Hiroki Ueda , C. A. F. Vaz , Milan Radovic , Urs Staub

Topographical and diffuse interface reconfigurations occur with a change in the solidification rate. In this article we pursue the hypothesis that the interface configuration during solidification is determined by the rate of entropy…

Materials Science · Physics 2017-02-14 Yaw Delali Bensah , J. A. Sekhar

The protection of halide perovskites is important for the performance and stability of emergent perovskite-based optoelectronic technologies. In this work, we investigate the potential inorganic protective coating materials ZnO, SrZrO3, and…

Materials Science · Physics 2022-02-22 Azimatu Fangnon , Marc Dvorak , Ville Havu , Milica Todorovic , Jingrui Li , Patrick Rinke

We have investigated the properties of interfaces between LaAlO3 films grown on SrTiO3 substrates singly terminated by TiO2. We used RF sputtering in a high-pressure oxygen atmosphere. The films are smooth, with flat surfaces. Transmission…

Materials Science · Physics 2011-11-23 I. M. Dildar , D. B. Boltje , M. H. S. Hesselberth , Q. Xu , H. W. Zandbergen , S. Harkema

The novel electronic properties emerging at interfaces between transition metal oxides, and in particular the discovery of conductivity in heterostructures composed of LaAlO$_3$ (LAO) and SrTiO$_3$ (STO) band insulators, have generated new…

The Gaussian (saddle splay) rigidity of fluid membranes controls their equilibrium topology but is notoriously difficult to measure. In lipid mixtures, typical of living cells, linear interfaces separate liquid ordered (LO) from liquid…

Soft Condensed Matter · Physics 2020-11-04 Piermarco Fonda , Sami C. Al-Izzi , Luca Giomi , Matthew S. Turner

Since the 1960's when Gordon Moore proposed that the transistor density in our electronic devices should double every two years while the cost is halved, the semiconductor industry has taken this statement to heart. Over the last few…

Materials Science · Physics 2022-07-27 Aditya Muralidharan

The high-mobility conducting interface (CI) between LaAlO_{3}(LAO) and SrTiO_{3}(STO) has revealed many fascinating phenomena, including exotic magnetism and superconductivity. But, the formation mechanism of the CI has not been…

Strongly Correlated Electrons · Physics 2021-05-14 Hyang Keun Yoo , Luca Moreschini , Aaron Bostwick , Andrew L. Walter , Tae Won Noh , Eli Rotenberg , Young Jun Chang
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