Results 121 to 130 of about 890,334 (313)

Transient Antiskyrmion‐Mediated Topological Transitions in Isotropic Magnets

Advanced Science, EarlyView.
A transient antiskyrmion‐mediated pathway that drives repeated stripe‐to‐skyrmion transitions is revealed, producing a net increase in topological charge in isotropic Dzyaloshinskii–Moriya interaction films. Experiments and simulations identify the antiskyrmion as a metastable excitation, enabling stochastic bitstream generation for probabilistic ...
Bingqian Dai, Tianyi Wang, Albert Lee, Shijie Xu, Zhongjian Bian, Xinyue Zhu, Puyang Huang, Aadi Chaturvedi, Yaochen Li, Yang Cheng, Qingyuan Shu, Haoran He, Hanshen Huang, Lixuan Tai, Kin Wong, Jinbo Yang, Anjan Soumyanarayanan, Zhaochu Luo, Kang L. Wang   +18 more
wiley   +1 more source

’t Hooft anomaly matching condition and chiral symmetry breaking without bilinear condensate

Journal of High Energy Physics, 2019
We explore 4-dimensional SU(N) gauge theory with a Weyl fermion in an irreducible self-conjugate representation. This theory, in general, has a discrete chiral symmetry.
Satoshi Yamaguchi
doaj   +1 more source

Konishi anomaly approach to gravitational F-terms

, 2003
We study gravitational corrections to the effective superpotential in theories with a single adjoint chiral multiplet, using the generalized Konishi anomaly and the gravitationally deformed chiral ring.
A. Klemm, E. Witten, Edi Gava, F. Cachazo, G. Akemann, H. Ooguri, H. Ooguri, J. Ambjørn, J. Wess, Justin R David, K. Konishi, K.S Narain, L. Alvarez-Gaumé, L.F. Alday, N. Magnoli, P. Kraus, R. Dijkgraaf, R. Dijkgraaf, R. Dijkgraaf, S.J. Gates   +19 more
core   +2 more sources

Ferromagnetic Interlayer Exchange Coupling in Magnetic Topological Insulator Sandwich Heterostructures

Advanced Science, EarlyView.
A thin topological insulator (Bi2Te3) inserted between two single magnetic septuple layers of MnBi2Te4 is shown to convert the intrinsic antiferromagnetic interlayer coupling into robust ferromagnetism. As the Bi2Te3 spacer thickness increases from 1 to 4 quintuple layers, the weakening coercivity, Curie temperature, and interlayer coupling reveal ...
Enayet Hossain, Grace L. Causer, Qile Li, Sergey Rubanov, Kaijian Xing, James Blyth, Mohammad T. H. Bhuiyan, Mengting Zhao, Matthew Gebert, Michael S. Fuhrer, Mark T. Edmonds   +10 more
wiley   +1 more source

Anomaly constraint on massless QCD and the role of Skyrmions in chiral symmetry breaking

Journal of High Energy Physics, 2018
We discuss consequences of the ’t Hooft anomaly matching condition for Quantum Chromodynamics (QCD) with massless fundamental quarks. We derive the new discrete ’t Hooft anomaly of massless QCD for generic numbers of color N c and flavor N f , and an ...
Yuya Tanizaki
doaj   +1 more source

Mechanism of Anomalous Anisotropic Colossal Magnetoresistance in Quasi-2D Mn₃Si₂Te₆ Bulk Single Crystal. [PDF]

Adv Sci (Weinh)
The external field exceeds Hd, the speed polarization abruptly reorients to align with the Mn magnetic moments, leading to an MR ≈ −100%. Abstract Mn3Si2Te6, quasi‐2D ferrimagnetic semiconductor, exhibits anomalous saturated colossal magnetoresistance (CMR) only when a magnetic field is applied along its magnetic hard magnetization axis, suggesting ...
Li S, He X, Li S, Li T, Zhang W, Yi L, Lu G, Xia Z, Xu Y, Xiao JQ, Pan L.   +10 more
europepmc   +2 more sources

Chiral anomaly, Berry phase, and chiral kinetic theory from worldlines in quantum field theory [PDF]

, 2017
In previous work, we outlined a worldline framework that can be used for systematic computations of the chiral magnetic effect (CME) in ultrarelativistic heavy-ion collisions.
N. Mueller, R. Venugopalan
semanticscholar   +1 more source

Large Anomalous Hall Effect, Non‐Vanishing Berry Curvature in (110) FeRh Antiferromagnet Films via Interface Strain

Advanced Science, EarlyView.
This study demonstrates a strain‐tunable anomalous Hall response in the (110)‐oriented FeRh thin film. First‐principles calculations reveal that strain‐induced symmetry lowering redistributes Berry curvature near the Fermi level via band shifts and avoided crossings.
Yun‐Ho Kim, Gil‐Sung Kim, Jae Won Choi, Jung‐Min Cho, Won‐Yong Lee, Hongkee Yoon, Yeonho Choi, Shelby Fields, Steven Bennett, Mona Zebarjadi, Young‐Gui Yoon, Sang‐Kwon Lee   +11 more
wiley   +1 more source

Axion‐Like Interactions and CFT in Topological Matter, Anomaly Sum Rules and the Faraday Effect

Advanced Physics Research
Fundamental aspects of chiral anomaly‐driven interactions in conformal field theory (CFT) in four spacetime dimensions are discussed. These interactions find application in very general contexts, from early universe plasma to topological condensed matter.
Claudio Corianò, Mario Cretì, Stefano Lionetti, Dario Melle, Riccardo Tommasi   +4 more
doaj   +1 more source

Chiral anomalies and supersymmetry

Nuclear Physics B, 1986
Abstract The structure of the chiral anomalies in supersymmetric gauge theories is studied. We discuss in detail the relationship between the two pictures: the manifestly SUSY-covariant approach and the Wess-Zumino gauge. A prescription for the computation of the anomalies in higher dimensions is presented and the resulting expression in six ...
GUADAGNINI, ENORE, MINTCHEV M.
openaire   +2 more sources