Results 41 to 50 of about 43,633 (297)

Influence of substitutional disorder on the electrical transport and the superconducting properties of Fe$_{1+z}$Te$_{1-x-y}$Se$_{x}$S$_{y}$ [PDF]

, 2015
We have carried out an investigation of the structural, magnetic, transport and superconducting properties of Fe$_{1+z}$Te$_{1-x-y}$Se$_x$S$_y$ ceramic compounds, for $z=0$ and some specific Se (0$\leq$ x $\leq$ 0.5) and S (0 $\leq$ y $\leq$0.12 ...
Bendele, Bezusyy, Brand, C. Acha, C.P. Ramos, Deng, Fang, G. Polla, Garbarino, Goya, Gresty, Guigue-Millot, Gómez, Hsu, Hu, Hunte, Hussey, Kamihara, Kamimura, Kotliar, Kumar, Liu, M.G. Rodríguez, Martinelli, Mizuguchi, Mizuguchi, Mizuguchi, Nabeshima, Ok, Ren, Rodriguez-Carvajal, Shklovskii, Su, Szymański, Tarantini, Tegel, Tegel, Tsurkan, Walz, Wittlin, Yadav, Yeh   +41 more
core   +2 more sources

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

Advanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu, Florian Maudet, Thanh Luan Phan, Wassim Hamouda, Richard Schroedter, Ahmet Samil Demirkol, Ronald Tetzlaff, Veeresh Deshpande, Catherine Dubourdieu   +8 more
wiley   +1 more source

Local motifs in GeS$_2$-Ga$_2$S$_3$ glasses [PDF]

, 2016
The structure of (GeS$_2$)$_{0.75}$(Ga$_2$S$_3$)$_{0.25}$ and (GeS$_2$)$_{0.83}$(Ga$_2$S$_3$)$_{0.17}$ glasses was investigated by Raman scattering, high energy X-ray diffraction and extended X-ray absorption fine structure (EXAFS) measurements at the Ga
Belin, Stéphanie, Bureau, Bruno, Chahal, Radwan, Jóvári, Pál, Kaban, Ivan, Nazabal, Virginie, Pethes, Ildikó   +6 more
core   +4 more sources

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

STUDY ON EFFECTIVE MODE AREA BY Ge20Sb5Se75 SUSPENDED-CORE FIBER FILLED WITH CARBON DISULFIDE

Tạp chí Khoa học
This paper presents a study on the effective mode area and effective refractive index of a suspended-core photonic crystal fiber based on a Ge20Sb5Se75 chalcogenide with CS2-filled air holes, with the aim of applications in the mid-infrared region ...
Nguyen Thi Hong Phuong, Tran Hong Tham, Nguyen Minh Thien, Nguyen Trong Nam, Do Mai Trang, Chu Van Lanh*, Chu Van Ben, Le Van Hieu   +2 more
doaj   +1 more source

Comparison of loss in silica and chalcogenide negative curvature fibers as the wavelength varies

Frontiers in Physics, 2016
We computationally study fiber loss in negative curvature fibers made with silica, As2S3 chalcogenide, and As2Se3 chalcogenide glasses with a fixed core-diameter-to-wavelength ratio of 30. We consider both simple and nested geometries as the transmission
Chengli Wei, Jonathan Hu, Curtis R. Menyuk   +2 more
doaj   +1 more source

Optimization of optical properties of Ge20Sb5Se75-based photonic crystal fibers

Tạp chí Khoa học, 2022
In this paper, we present a new design of solid-core photonic crystal fiber (PCF), a Ge20Sb5Se75 substrate with a hexagonal lattice structure. The fiber characteristics are studied in the long-wavelength range (from 1.5 µm to 7.0 µm).
VO Thi Minh Ngoc, TRAN Viet Thanh, CHU Thi Hoai Sam, LE Tran Bao Tran, DANG Van Trong, NGUYEN Thi Thuy, LE Van Hieu, CHU Van Lanh   +7 more
doaj   +1 more source

Chalcogenide Glass-on-Graphene Photonics [PDF]

, 2017
Two-dimensional (2-D) materials are of tremendous interest to integrated photonics given their singular optical characteristics spanning light emission, modulation, saturable absorption, and nonlinear optics.
A Grigorenko, A Urich, Anupama Yadav, B Lee, BJ Eggleton, C Ye, C-C Huang, Chung-Che Huang, CT Phare, D Schall, Daniel Hewak, Derek Kita, Dirk Englund, F Bonaccorso, F Withers, F Xia, H Dalir, H Li, Hanyu Zheng, Haozhe Wang, Hongtao Lin, J Hu, J Musgraves, J Wang, J Williams, JH Chen, Jing Kong, Juejun Hu, Junying Li, JY Hong, Kaiqi Wang, Kathleen Richardson, L Colombo, L Li, L Nyakiti, L Petit, L Yu, L Zheng, L Zhou, Lan Li, M Kleinert, M Liu, M Liu, M Mohsin, M-S Kwon, MR Watts, MW Graham, N Youngblood, NK Emani, Q Bao, Q Du, Q Quan, R-J Shiue, Ren-Jye Shiue, S Goniszewski, Skylar Deckoff-Jones, Spencer Novak, Tian Gu, VG Ta’eed, W Gao, W Zhu, X Gan, X Ling, X Wang, X Wang, Y Hu, Y Yao, Y Zou, Y Zou, Yi Song, Yizhong Huang, Z Han, Z Sun, Zhengqian Luo   +73 more
core   +2 more sources

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

Optical properties of photonic crystal fibers made from Ge23Sb7S70 chalcogenide

Communications in Physics
In this paper, we investigate a photonic crystal fiber (PCF) of Ge23Sb7S70 chalcogenide with five air-hole rings arranged in a regular hexagonal lattice. Using simulations and numerical analyses, we investigated the influence of structural parameters on
Van Hieu Le, Tham Tran Hong, Khanh To Gia, Tu Nguyen Ba, Thao Nguyen Thi, Dung Nguyen Thi, Bien Chu Van, Hue Thi Nguyen, An Nguyen Manh, Thuy Van Hoang   +9 more
doaj   +1 more source