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Magnetoresistance in the superconducting state at the (111) LaAlO3/SrTiO3 interface

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arXiv 2017年

Condensed matter systems that simultaneously exhibit superconductivity and ferromagnetism are rare due the antagonistic relationship between conventional spin-singlet superconductivity and ferromagnetic order. In materials in which superconductivity and magnetic order is known to coexist (such as some heavy-fermion materials), the superconductivity is thought to be of an unconventional nature. Recently, the conducting gas that lives at the interface between the perovskite band insulators LaAlO3 (LAO) and SrTiO3 (STO) has also been shown to host both superconductivity and magnetism. Most previous research has focused on LAO/STO samples in which the interface is in the (001) crystal plane. Relatively little work has focused on the (111) crystal orientation, which has hexagonal symmetry at the interface, and has been predicted to have potentially interesting topological properties, including unconventional superconducting pairing states. Here we report measurements of the magnetoresistance of (111) LAO/STO heterostructures at temperatures at which they are also superconducting. As with the (001) structures, the magnetoresistance is hysteretic, indicating the coexistence of magnetism and superconductivity, but in addition, we find that this magnetoresistance is anisotropic. Such an anisotropic response is completely unexpected in the superconducting state, and suggests that (111) LAO/STO heterostructures may support unconventional superconductivity. Copyright © 2017, The Authors. All rights reserved.

关键词： Strontium titanates

OPTOELECTRONIC AND ELECTROCHROMIC PROPERTIES OF NEW POLYARYLATES DERIVED FROM 2-NAPHTHYLDIPHENYLAMINE UNITS

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OPTOELECTRONIC AND ELECTROCHROMIC PROPERTIES OF NEW POLYARYL...

第七届高分子化学国际学术研讨会

作者： Wanan Cai Xiaotong Wu Haijun Niu Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationDepartment of Macromolecular Science and EngineeringSchool of ChemicalChemical Engineering and MaterialsHeilongjiang University

Electrochromic materials can change color reversibly to reach meaning goals of energy saving,safety,privacy,e-skin and camouflage by means of sufficient electrochemical potential or redox process.1-4 Our group has done some work in this *** addition to containing nitrogen and sulfur,such as polyazomethine,polyamide,polyimide,polyarylate,other electrochromic materials containing

关键词： OPTOELECTRONIC AND ELECTROCHROMIC PROPERTIES OF NEW POLYARYLATES DERIVED FROM 2-NAPHTHYLDIPHENYLAMINE UNITS

STABLE ELECTROCHROMIC POLYSCHIFF BASE-BASED POLYMERS CONTAINING TRIARYLAMINE:SYNTHESIS,ELECTROCHEMICAL AND ACIDOCHROMIC PROPERTIES

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STABLE ELECTROCHROMIC POLYSCHIFF BASE-BASED POLYMERS CONTAIN...

第七届高分子化学国际学术研讨会

作者： Tiandi Xiao Yan Ji Haijun Niu Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationDepartment of Macromolecular Science and EngineeringSchool of ChemicalChemical Engineering and MaterialsHeilongjiang University

Triphenylamine(TPA)because of its unique structure of a propeller,which has excellent heat resistance,photoconductivity,hole transport ***,due to the single polyaniline has benzene ring and hydrogen bonding interactions between the molecular chains2,which improved the molecular chain rigidity,so the solubility of polymer is poor in most organic *** these

关键词： STABLE ELECTROCHROMIC POLYSCHIFF BASE-BASED POLYMERS CONTAINING TRIARYLAMINE:SYNTHESIS,ELECTROCHEMICAL AND ACIDOCHROMIC PROPERTIES

Exploring low internal reorganization energies for silicene nanoclusters

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arXiv 2017年

作者： Pablo-Pedro, Ricardo Lopez-Rios, Hector Mendoza-Cortes, Jose-L Kong, Jing Fomine, Serguei van Voorhis, Troy Dresselhaus, Mildred S. Department of Chemistry Massachusetts Institute of Technology 77 Massachusetts Avenue CambridgeMA02139 United States Instituto de Investigaciones en Materiales Universidad Nacional Autónoma de México Apartado Postal 70-360 CU Coyoacán Ciudad de México04510 Mexico Department of Chemical & Biomedical Engineering Florida A&M University Florida State University Joint College of Engineering Tallahassee FL32310 United States Scientific Computing Department Materials Science and Engineering Program High Performance Material Institute Condensed Matter Theory National High Magnetic Field Laboratory Florida State University TallahasseeFL32310 United States Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology CambridgeMA02139 United States Department of Physics Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology CambridgeMA02139 United States

High-performance materials rely on small reorganization energies to facilitate both charge separation and charge transport. Here, we performed DFT calculations to predict small reorganization energies of rectangular silicene nanoclusters with hydrogen-passivated edges denoted by H-SiNC. We observe that across all geometries, H-SiNCs feature large electron affinities and highly stabilized anionic states, indicating their potential as n-type materials. Our findings suggest that fine-tuning the size of H-SiNCs along the "zigzag" and "armchair" directions may permit the design of novel n-type electronic materials and spinctronics devices that incorporate both high electron affinities and very low internal reorganization energies. Copyright © 2017, The Authors. All rights reserved.

关键词： Silicene

Exploring Low Internal Reorganization Energies for Silicene Nanoclusters

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arXiv 2017年

关键词： Silicene

Superconductivity and frozen electronic states at the (111) LaAlO3/SrTiO3 interface

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arXiv 2017年

作者： Davis, S. Huang, Z. Han, K. Ariando Venkatesan, T. Chandrasekhar, V. Graduate Program in Applied Physics Department of Physics and Astronomy Northwestern University 2145 Sheridan Road EvanstonIL60208 United States NUSNNI-Nanocore National University of Singapore 117411 Singapore Department of Physics National University of Singapore 117551 Singapore NUS Graduate School for Integrative Sciences & Engineering National University of Singapore 117456 Singapore NUSNNI-NanoCore National University of Singapore 117411 Singapore Department of Physics National University of Singapore 117542 Singapore Department of Electrical and Computer Engineering National University of Singapore 117576 Singapore Department of Material Science and Engineering National University of Singapore 117575 Singapore

In spite of Anderson’s theorem1, disorder is known to affect superconductivity in conventional s-wave superconductors2–11. In most superconductors, the degree of disorder is fixed during sample preparation. Here we report measurements of the superconducting properties of the two-dimensional gas that forms at the interface between LaAlO3 (LAO) and SrTiO3 (STO) in the (111) crystal orientation, a system that permits in situ tuning of carrier density and disorder by means of a back gate voltage Vg. Like the (001) oriented LAO/STO interface12–15, superconductivity at the (111) LAO/STO interface can be tuned by Vg. In contrast to the (001) interface, superconductivity in these (111) samples is anisotropic, being different along different interface crystal directions, consistent with the strong anisotropy already observed other transport properties at the (111) LAO/STO interface16,17. In addition, we find that the (111) interface samples "remember" the backgate voltage VF at which they are cooled at temperatures near the superconducting transition temperature Tc, even if Vg is subsequently changed at lower temperatures. The low energy scale and other characteristics of this memory effect ( Copyright © 2017, The Authors. All rights reserved.

关键词： Aluminum compounds

Author Correction: Dynamic Mechano-Regulation of Myoblast Cells on Supramolecular Hydrogels Cross-Linked by Reversible Host-Guest Interactions

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Scientific reports 2018年第1期8卷 4207页

作者： Marcel Hörning Masaki Nakahata Philipp Linke Akihisa Yamamoto Mariam Veschgini Stefan Kaufmann Yoshinori Takashima Akira Harada Motomu Tanaka Institute for Integrated Cell-Material Science (WPI iCeMS) Kyoto University Kyoto 606-8501 Japan. Institute of Biomaterials and Biomolecular Systems (IBBS) University of Stuttgart 70569 Stuttgart Germany. Project Research Center for Fundamental Sciences Graduate School of Science Osaka University 1-1 Machikaneyama-cho Toyonaka Osaka 560-0043 Japan. Division of Chemical Engineering Department of Materials Engineering Science Graduate School of Engineering Science Osaka University 1-3 Machikaneyama-cho Toyonaka Osaka 560-8531 Japan. Physical Chemistry of Biosystems University of Heidelberg D69120 Heidelberg Germany. Department of Macromolecular Science Graduate School of Science Osaka University 1-1 Machikaneyama-cho Toyonaka Osaka 560-0043 Japan. Project Research Center for Fundamental Sciences Graduate School of Science Osaka University 1-1 Machikaneyama-cho Toyonaka Osaka 560-0043 Japan. harada@chem.sci.osaka-u.ac.jp. Institute for Integrated Cell-Material Science (WPI iCeMS) Kyoto University Kyoto 606-8501 Japan. tanaka@uni-heidelberg.de. Physical Chemistry of Biosystems University of Heidelberg D69120 Heidelberg Germany. tanaka@uni-heidelberg.de.

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.

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An Ultraflexible Silicon–Oxygen Battery Fiber with High Energy Density

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Angewandte Chemie 2017年第44期129卷

作者： Ye Zhang Yiding Jiao Lijun Lu Lie Wang Taiqiang Chen Huisheng Peng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced Materials Fudan University Shanghai 200438 China College of Materials Science and Engineering and The Key Laboratory of Material Processing and Mold of Ministry of Education Zhengzhou University Zhengzhou China

To satisfy the rapid development of portable and wearable electronics, it is highly desired to make batteries with both high energy densities and flexibility. Although some progress has been made in recent decades, the available batteries share critical problems of poor energy storage capacity and low flexibility. Herein, we have developed a silicon–oxygen battery fiber with high energy density and ultra‐high flexibility by designing a coaxial architecture with a lithiated silicon/carbon nanotube hybrid fiber as inner anode, a polymer gel as middle electrolyte and a bare carbon nanotube sheet as outer cathode. The fiber showed a high energy density of 512 Wh kg −1 and could effectively work after bending for 20 000 cycles. These battery fibers have been further woven into flexible textiles for a large‐scale application.

关键词： Batterien Elektrochemie Energiespeicherung Kohlenstoffnanoröhrenfasern Tragbare Elektronik

Biocompatible and Photo-crosslinkable Polymer-Enzyme Nanoparticles to Fabricate Biosensors with Excellent Molecular Recognition Ability

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Biocompatible and Photo-crosslinkable Polymer-Enzyme Nanopar...

第一届聚合物分子工程国际学术会议

作者： Sheng Xu Qian Wu Yi Chen Wang Xiaoya Liu Ming Jiang Key Laboratory of Food Colloids and Biotechnology Ministry of Education School of Chemical and Material Engineering Jiangnan University State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan University

The key challenge of fabricating biosensors lies in how to integrate biological components(such as enzymes)into microelectronic systems.1This includes two parts:immobilization of biological components with high stabil... 详细信息

关键词： HRP Biocompatible and Photo-crosslinkable Polymer-Enzyme Nanoparticles to Fabricate Biosensors with Excellent Molecular Recognition Ability