Results 61 to 70 of about 45,166 (322)

Wide field imaging of van der Waals ferromagnet Fe3GeTe2 by spin defects in hexagonal boron nitride

Nature Communications, 2022
Hexagonal boron nitride (h-BN) has been used extensively to encapsulate other van der Waals materials, protecting them from environmental degradation, and allowing integration into more complex heterostructures.
Mengqi Huang, Jingcheng Zhou, Di Chen, Hanyi Lu, Nathan J. McLaughlin, Senlei Li, Mohammed Alghamdi, Dziga Djugba, Jing Shi, Hailong Wang, Chunhui Rita Du   +10 more
doaj   +1 more source

Large tunable valley splitting in edge-free graphene quantum dots on boron nitride [PDF]

, 2018
Coherent manipulation of binary degrees of freedom is at the heart of modern quantum technologies. Graphene offers two binary degrees: the electron spin and the valley.
A Ambrosetti, A Georgi, A Müller, AH Castro Neto, AK Geim, AM Goossens, Andre K. Geim, AS Mayorov, AV Kretinin, B Sachs, B Trauzettel, B Voigtländer, CH Yang, Christian Holl, Colin R. Woods, CR Woods, D Bischoff, D Pesin, D Wong, D Xiao, DA Abanin, F Libisch, Florian Libisch, GJ Slotman, J Jung, J Petta, JK Gamble, JM Elzerman, JM Xue, Joachim Burgdörfer, JR Wallbank, Kostya S. Novoselov, KS Novoselov, L Ju, LA Chizhova, Larisa A. Chizhova, M Morgenstern, M Morgenstern, M Pioro-Ladriere, M Sui, Markus Morgenstern, MM Wijk van, MT Allen, Nils M. Freitag, NM Freitag, P San-Jose, P Scarlino, Péter Nemes-Incze, R Decker, R Dombrowski, R Feenstra, R Rahman, Roman V. Gorbachev, SJ Haigh, T Gokmen, T Kobayashi, T Mashoff, T Mashoff, TD Ladd, Tobias Reisch, X Mi, X Wu, Y Jiang, Y Shimazaki, Yang Cao, Z Wang   +65 more
core   +3 more sources

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

Advanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Alternative stacking sequences in hexagonal boron nitride [PDF]

2D Materials, 2019
The relative orientation of successive sheets, i.e. the stacking sequence, in layered two-dimensional materials is central to the electronic, thermal, and mechanical properties of the material. Often different stacking sequences have comparable cohesive energy, leading to alternative stable crystal structures.
S Matt Gilbert, Thang Pham, Mehmet Dogan, Sehoon Oh, Brian Shevitski, Gabe Schumm, Stanley Liu, Peter Ercius, Shaul Aloni, Marvin L Cohen, Alex Zettl   +10 more
openaire   +4 more sources

Prospects of Electric Field Control in Perpendicular Magnetic Tunnel Junctions and Emerging 2D Spintronics for Ultralow Energy Memory and Logic Devices

Advanced Functional Materials, EarlyView.
Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp, Brahmdutta Dixit, Yifei Yang, Deyuan Lyu, Thomas Peterson, Qi Jia, Yu‐Chia Chen, Jian‐Ping Wang   +7 more
wiley   +1 more source

Changes in the Optical Properties of an M-Doped (M = Pt, Ti) hBN Sheet and CO₂ Capturing

Crystals, 2022
We performed ab initio DFT calculations to explore the optical properties of a hexagonal boron nitride (hBN) monolayer, doped with a Ti or a Pt atom. Ti doping increases the adsorption capability of the boron nitride surface for capturing CO2.
Juan Manuel Ramírez-de-Arellano, Ali Fransuani Jiménez-González, Luis Fernando Magaña   +2 more
doaj   +1 more source

Substitutional Si impurities in monolayer hexagonal boron nitride

, 2019
We report the first observation of substitutional silicon atoms in single-layer hexagonal boron nitride (h-BN) using aberration corrected scanning transmission electron microscopy (STEM).
Komsa, Hannu-Pekka, Kotakoski, Jani, Ludacka, Ursula, Monazam, Mohammad Reza Ahmadpour   +3 more
core   +1 more source

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

Advanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich, Paul Markus, Matthias Stöter, Bernhard Biersack, Rainer Schobert, Josef Breu, Georg Papastavrou   +6 more
wiley   +1 more source

Optical Anisotropy in van der Waals materials: Impact on Direct Excitation of Plasmons and Photons by Quantum Tunneling

Light: Science & Applications, 2021
Enhancement in local density of optical states arising from the optical anisotropy of hexagonal boron nitride significantly improves the emission rates of plasmons and photons in quantum mechanical tunnel junctions.
Zhe Wang, Vijith Kalathingal, Thanh Xuan Hoang, Hong-Son Chu, Christian A. Nijhuis   +4 more
doaj   +1 more source

Enhanced Crystallinity and Luminescence Characteristics of Hexagonal Boron Nitride Doped with Cerium Ions According to Tempering Temperatures [PDF]

, 2021
Jae Yong Jung, Juna Kim, Young Do Kim, Young-Kuk Kim, Hee-Ryoung Cha, Jae Yong Jung, Chang‐Sik Son, Donghyun Hwang   +7 more
openalex   +1 more source