Results 61 to 70 of about 200,617 (293)

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

On topological charge carried by nexuses and center vortices

, 2001
In this paper we further explore the question of topological charge in the center vortex-nexus picture of gauge theories. Generally, this charge is locally fractionalized in units of 1/N for gauge group SU(N), but globally quantized in integral units. We
A. Hart, B.L.G. Bakker, C.H. Taubes, C.H. Taubes, D. Groisser, D. Gross, E. Witten, E. Witten, E.A. Kuznetsov, F. Bruckmann, G. Veneziano, G. ’t Hooft, J. Ambjorn, J. Arafune, J.M. Cornwall, J.M. Cornwall, J.M. Cornwall, J.M. Cornwall, J.M. Cornwall, J.M. Cornwall, John M. Cornwall, K. Lee, K. Lee, L.D. Faddeev, L.D. Faddeev, L.D. Faddeev, M. Engelhardt, M. Engelhardt, M.N. Chernodub, M.N. Chernodub, N. Christ, O. Jahn, P. van Baal, R. Bertle, R. Jackiw, R.C. Brower, R.C. Brower, R.G. Edwards, S. Sasaki, T.C. Kraan, T.C. Kraan, V. Bornyakov, V.A. Fateev   +42 more
core   +1 more source

Exchange-biasing topological charges by antiferromagnetism [PDF]

Nature Communications, 2018
AbstractGeometric Hall effect is induced by the emergent gauge field experienced by the carriers adiabatically passing through certain real-space topological spin textures, which is a probe to non-trivial spin textures, such as magnetic skyrmions. We report experimental indications of spin-texture topological charges induced in heterostructures of a ...
Qing Lin He, Gen Yin, Alexander J. Grutter, Lei Pan, Xiaoyu Che, Guoqiang Yu, Dustin A. Gilbert, Steven M. Disseler, Yizhou Liu, Padraic Shafer, Bin Zhang, Yingying Wu, Brian J. Kirby, Elke Arenholz, Roger K. Lake, Xiaodong Han, Kang L. Wang   +16 more
openaire   +5 more sources

Emergent Spin‐Glass Behavior in an Iron(II)‐Based Metal–Organic Framework Glass

Advanced Functional Materials, EarlyView.
A one‐pot, solvent‐free synthesis yields an Fe2+‐based metal‐organic framework (MOF) glass featuring a continuous random network structure. The material exhibits spin‐glass freezing at 14 K, driven by topological‐disorder and short‐range magnetic frustration, showcasing the potential of MOF glasses as a plattform for cooperative magnetic phenomena in ...
Chinmoy Das, Soma Salamon, Joachim Landers, Jan‐Benedikt Weiß, Wen‐Long Xue, Pascal Kolodzeiski, Roman Pallach, Heiko Wende, Sebastian Henke   +8 more
wiley   +1 more source

Trions in 1+1 dimensions [PDF]

, 2010
We consider an Abelian BF-Higgs theory with Nf=2 Higgs fields in 1+1 dimensions. We derive a new BPS-like bound and find topological solitons with tri-charges (topological charge, Q-charge and electric charge).
Eto, Minoru
core  

Quantum simulation of topological Majorana bound states and their universal quantum operations using charge-qubit arrays [PDF]

, 2015
Majorana bound states have been a focus of condensed matter research for their potential applications in topological quantum computation. Here we utilize two charge-qubit arrays to explicitly simulate a DIII class one-dimensional superconductor model ...
Mao, Ting, Wang, Z. D.
core   +2 more sources

Topological Charge of Noncommutative ADHM Instanton [PDF]

Modern Physics Letters A, 2003
We analytically calculate the topological charge of general noncommutative U (N) instantons using the Corrigan's identity and find that the result is exactly the instanton number k, which appears in the noncommutative ADHM construction as the dimension of the vector space V. This result coincides with the corresponding fact in the commutative case.
Tian, Yu, Zhu, Chuan-Jie, Song, Xing-Chang   +2 more
openaire   +2 more sources

Predicting Atomic Charges in MOFs by Topological Charge Equilibration

Advanced Functional Materials, EarlyView.
An atomic charge prediction method is presented that is able to accurately reproduce ab‐initio‐derived reference charges for a large number of metal–organic frameworks. Based on a topological charge equilibration scheme, static charges that fulfill overall neutrality are quickly generated.
Babak Farhadi Jahromi, Sumukh Shankar Sharadaprasad, Rochus Schmid   +2 more
wiley   +1 more source

Improved lattice operators: the case of the topological charge density [PDF]

, 1995
We analyze the properties of a class of improved lattice topological charge density operators, constructed by a smearing-like procedure. By optimizing the choice of the parameters introduced in their definition, we find operators having (i) a better ...
A. Di Giacomo, A. Di Giacomo, A. Di Giacomo, B. Allés, B. Allés, B. Allés, B. Allés, C. Christou, D. Espriu, E. M. Ilgenfritz, E. Vicari, E. Witten, G. M. Shore, G. Veneziano, G. Veneziano, H. Panagopoulos, J. Ellis, J. Hoek, J. Hoek, K. Ishikawa, M. Albanese, M. Campostrini, M. Campostrini, M. Teper, M. Teper, M. Teper, M. Teper, P. Di Vecchia, R. D. Carlitz, R. Gupta, R. J. Crewther   +30 more
core   +2 more sources

Topological charge of asymmetric optical vortices

Optics Express, 2020
We obtain theoretical relationships to define topological charge (TC) of vortex laser beams devoid of radial symmetry, namely asymmetric Laguerre-Gaussian (LG), asymmetric Bessel-Gaussian (BG), and asymmetric Kummer beams, as well as Hermite-Gaussian (HG) vortex beams.
Victor V. Kotlyar, Alexey A. Kovalev
openaire   +2 more sources