Results 71 to 80 of about 211,167 (339)

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

First observation of beta-induced Alfvén eigenmode inside the edge magnetic island on the J-TEXT tokamak

Nuclear Fusion
Experiments conducted on the J-TEXT tokamak have provided the first evidence that the Beta-induced Alfvén Eigenmode (BAE) is localized inside the isolated helical flux tube of its edge m / n = 3/1 magnetic island. The observations show that the BAE forms
J. Yang, Y. Liang, N.C. Wang, P. Shi, S. Zhou, Z.P. Chen, Z.H. Jiang, F.Y. Mao, J.K. Hua, C.K. Li, Q.H. Yang, D. Li, P. Drews, A. Knieps, E. Wang, S. Xu, H.M. Xiang, J.Q. Cai, J. Huang, Y.C. Gao, J.W. Liu, Y. Luo, L. Liao, Y.T. Yang, W. Xie, Z.Y. Chen, Y.H. Ding, the J-TEXT Team   +27 more
doaj   +1 more source

Inhomogeneous structure of magnetic layer of the Kuril Island Arc

Геодинамика и тектонофизика, 2020
An innovative technology of anomalous magnetic field inversion was applied to construct 2D models of the magnetic layer using three profiles crossing the southern, central and northern parts of the Kuril Island Arc.
N. A. Palshin, A. N. Ivanenko, D. A. Alekseev   +2 more
doaj   +1 more source

2D continuous spectrum of shear Alfven waves in the presence of a magnetic island

, 2010
The radial structure of the continuous spectrum of shear Alfven modes is calculated in the presence of a magnetic island in tokamak plasmas. Modes with the same helicity of the magnetic island are considered in a slab model approximation.
Alessandro Biancalani, Annibaldi S V, Biancalani A, Biancalani A Chen L Pegoraro F Zonca F, Botrugno A, Buratti P, Chen L, Chen L, Chen L, Francesco Pegoraro, Fulvio Zonca, Liu Chen, Mikhailovskii A B, Mikhailovskii A B, Pinches S D, Tuccillo A A, Zonca F, Zonca F, Zonca F, Zonca F   +19 more
core   +1 more source

Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD

Advanced Materials, EarlyView.
Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo, Masoud Mansouri, Carlos Garcia‐Fernandez, Daniel Sánchez‐Portal, Aran Garcia‐Lekue, Gustavo Ceballos, Aitor Mugarza   +6 more
wiley   +1 more source

Calculations of magnetic states and minimum energy paths of transitions using a noncollinear extension of the Alexander-Anderson model and a magnetic force theorem

, 2014
Calculations of stable and metastable magnetic states as well as minimum energy paths for transitions between states are carried out using a noncollinear extension of the multiple-impurity Alexander-Anderson model and a magnetic force theorem which is ...
Bessarab, Pavel F., Jónsson, Hannes, Uzdin, Valery M.   +2 more
core   +1 more source

Atomistic Mechanisms Triggered by Joule Heating Effects in Metallic Cu‐Bi Nanowires for Spintronics

Advanced Materials, EarlyView.
Bi doped metallic Cu nanowires are promising for spintronics thanks to the stabilization of a giant spin Hall effect. However, heat resulting from current injection forces Bi to leave solution, forcing segregation into monoatomic decorations which evolve into coherent crystalline aggregates.
Alejandra Guedeja‐Marrón, Juan Ignacio Beltrán, Matilde Saura‐Múzquiz, Paolo Perna, M. Carmen Muñoz, Lucas Pérez, Maria Varela   +6 more
wiley   +1 more source

Magnetic island merger as a mechanism for inverse magnetic energy transfer

, 2019
Magnetic energy transfer from small to large scales due to successive magnetic island coalescence is investigated. A solvable analytical model is introduced and shown to correctly capture the evolution of the main quantities of interest, as borne out by ...
Bhat, Pallavi, Loureiro, Nuno F., Uzdensky, Dmitri A., Zhou, Muni   +3 more
core   +1 more source

Magnetic islands in the quiet magnetotail

Geophysical Research Letters, 1980
Equilibrium configurations of the quiet geomagnetic tail are computed numerically, relaxing the condition of smooth variation along the tail axis. The results strongly suggest that the quiet plasma sheet will generally include magnetic islands, which substantiates recent observations of Lui and Meng (1979) on theoretical grounds.
Wolfgang Zwingmann, Karl Schindler
openaire   +1 more source

Soft Ionic and Electronic Triboelectric Nanogenerators: Toward Attachable and Implantable Biomedical Applications

Advanced Materials, EarlyView.
This review provides an overview of triboelectric nanogenerator (TENG)–based biomedical applications by classifying studies into electronic and ionic systems across attachable and implantable platforms. It summarizes key material choices, device structures, and working mechanisms that characterize current TENG‐based research, and outlines six future ...
Kyongtae Choi, Jimin Park, Won Jun Song, Soohwan An, Seonggyu Choe, Byeong‐Rak Keum, Min Young Kim, Dae Hee Hwang, Young‐Geun Park, Sung‐Won Kim, Sangyul Baik, Gwang‐Bum Im, Younghoon Lee   +12 more
wiley   +1 more source