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Superconductivity has been one of the most fascinating quantum states of matter for over several decades. Among the superconducting materials, LaAlO3/SrTiO3 interface is of particularly interest since superconductivity exists between two…

Superconductivity · Physics 2020-11-11 Yang Ma , Jiasen Niu , Wenyu Xing , Yunyan Yao , Ranran Cai , Jirong Sun , X. C. Xie , Xi Lin , Wei Han

Heterostructures of mixed-valence manganites are still under intense scrutiny, due to the occurrence of exotic quantum phenomena linked to electronic correlation and interfacial composition. For instance, if two anti-ferromagnetic…

Strongly Correlated Electrons · Physics 2022-08-05 Fabrizio Cossu , Heung-Sik Kim , Biplab Sanyal , Igor Di Marco

Interplay of spin, charge, orbital and lattice degrees of freedom in oxide heterostructures results in a plethora of fascinating properties, which can be exploited in new generations of electronic devices with enhanced functionalities. The…

Interfaces between transition-metal oxides are able to host two-dimensional electron gases (2DEGs) and exhibit exotic quantum phenomena. Here we report the observation of superconductivity below 230 mK for the heterostructure composed of…

Superconductivity · Physics 2022-12-27 Haoran Wei , Shengru Chen , Yuting Zou , Yuxin Wang , Meng Yang , Qinghua Zhang , Lin Gu , Kun Jiang , Er-Jia Guo , Zhi Gang Cheng

Conventional two-dimensional electron gases are realized by engineering the interfaces between semiconducting compounds. In 2004, Ohtomo and Hwang discovered that an electron gas can be also realized at the interface between large gap…

Ultrathin two-dimensional (2D) electronic systems at the interfaces of layered materials are highly desirable platforms for exploring of novel quantum phenomena and developing advanced device applications. Here, we investigate ultrathin…

Mesoscale and Nanoscale Physics · Physics 2025-03-31 Zengxing Lu , Jiatai Feng , Xuan Zheng , You-guo Shi , Run-Wei Li , Carmine Autieri , Mario Cuoco , Milan Radovic , Zhiming Wang

We report the formation of a novel ferromagnetic state in the antiferromagnet BiFeO3 at the interface with La0.7Sr0.3MnO3. Using x-ray magnetic circular dichroism at Mn and Fe L2,3-edges, we discovered that the development of this…

Resonant soft x-ray absorption measurements at the O K edge on a SrMnO3/LaMnO3 superlattice show a shoulder at the energy of doped holes, which corresponds to the main peak of resonant scattering from the modulation in the doped hole…

Strongly Correlated Electrons · Physics 2015-06-05 S. Smadici , B. B. Nelson-Cheeseman , A. Bhattacharya , P. Abbamonte

Creating a heterostructure by combining two magnetically and structurally distinct ruthenium oxides is a crucial approach for investigating their emergent magnetic states and interactions. Previously, research has predominantly concentrated…

Controlling the interplay between localized spins and itinerant electrons at the oxide interfaces can lead to exotic magnetic states. Here we devise SrTiO3/LaTiO3/SrTiO3 heterostructures with varied thickness of the LaTiO3 layer (n…

The physics of oxide superlattices is considered for pristine (001) multilayers of the band insulators LaAlO3 and SrTiO3 with alternating p and n interfaces. First principles results and a model of capacitor plates offer a simple paradigm…

Mesoscale and Nanoscale Physics · Physics 2009-07-29 N. C. Bristowe , Emilio Artacho , P. B. Littlewood

A large variety of transport properties have been observed at the interface between the insulating oxides SrTiO3 and LaAlO3 such as insulation, 2D interface metallicity, 3D bulk metallicity, Kondo scattering, magnetism and…

Strongly Correlated Electrons · Physics 2008-09-08 M. Huijben , A. Brinkman , G. Koster , G. Rijnders , H. Hilgenkamp , D. H. A. Blank

Interface effect in complex oxide thin film heterostructures lies at the vanguard of current research to design technologically relevant functionality and explore emergent physical phenomena. While most of the previous works focus on the…

Materials Science · Physics 2019-01-30 B. C. Behera , Subhadip Jana , Shwetha G. Bhat , G. Tripathy , P. S. Anil Kumar , D. Samal

In this work, we investigate the structural, magnetic, and microwave magnetic dynamics of multilayered \([{\rm LSMO}/{\rm SRO}]_n\) heterostructures \((n = 1 \text{ and } 5)\) grown on SrTiO\(_3\) (001) substrates. X-ray diffraction…

The rich electron correlations and highly coherent transport in reconfigurable devices sketched by a conductive atomic force microscope tip at the LaAlO3/SrTiO3 interface have enabled the oxide platform an ideal playground for studying…

Mesoscale and Nanoscale Physics · Physics 2023-06-19 Dawei Qiu , Mengke Ha , Qing Xiao , Zhiyuan Qin , Danqing Liu , Changjian Ma , Guanglei Cheng , Jiangfeng Du

The electronic properties of the polar interface between insulating oxides is a subject of great current interest. An exciting new development is the observation of robust magnetism at the interface of two non-magnetic materials LaAlO_3…

Strongly Correlated Electrons · Physics 2013-10-03 Sumilan Banerjee , Onur Erten , Mohit Randeria

Design of epitaxial interfaces is a pivotal way to engineer artificial structures where new electronic phases can emerge. Here we report a systematic emergence of interfacial superconducting state in epitaxial heterostructures of LaTiO3 and…

Interface engineering in complex oxide heterostructures has developed into a flourishing field as various intriguing physical phenomena can be demonstrated which are otherwise absent in their constituent bulk compounds. Here we present…

Materials Science · Physics 2023-04-03 Snehal Mandal , Sandip Halder , Biswarup Satpati , Kalpataru Pradhan , I. Das

The interface between LaAlO3 and SrTiO3 hosts a two-dimensional electron system of itinerant carriers, although both oxides are band insulators. Interface ferromagnetism coexisting with superconductivity has been found and attributed to…

Strongly Correlated Electrons · Physics 2013-06-19 G. Berner , M. Sing , H. Fujiwara , A. Yasui , Y. Saitoh , A. Yamasaki , Y. Nishitani , A. Sekiyama , N. Pavlenko , T. Kopp , C. Richter , J. Mannhart , S. Suga , R. Claessen

We present a first-principles study of the electronic structures and properties of ideal (atomically sharp) LaAlO3/SrTiO3 (001) heterointerfaces and their variants such as a new class of quantum well systems. We demonstrate the…

Materials Science · Physics 2015-05-19 Hanghui Chen , Alexie M. Kolpak , Sohrab Ismail-Beigi