Results 91 to 100 of about 110,027 (233)

Anisotropic Laser Performance in an Optically Isotropic Crystal by Phonon Engineering

Advanced Photonics Research, EarlyView.
The symmetry‐breaking in a photon–phonon collaboratively pumped laser is investigated for the first time. Using an optically isotropic Nd:YAG crystal, the phonon‐assisted electronic transitions accompanied by anisotropic fluorescence emission are observed.
Hong Hao, Fei Liang, Yu Fu, Dazhi Lu, Haohai Yu, Huaijin Zhang   +5 more
wiley   +1 more source

Anomalies and the chiral magnetic effect in the Sakai-Sugimoto model

, 2009
In the chiral magnetic effect an imbalance in the number of left- and right-handed quarks gives rise to an electromagnetic current parallel to the magnetic field produced in noncentral heavy-ion collisions.
A Rebhan, Andreas Schmitt, Anton Rebhan, CT Hill, CV Johnson, DE Kharzeev, DE Kharzeev, DT Son, DT Son, E Witten, EG Thompson, EV Gorbar, G Lifschytz, G Lifschytz, GM Newman, H Hata, H Hata, H-U Yee, HB Nielsen, J Ambjørn, J Erdmenger, JM Maldacena, JS Bell, K Fukushima, K Hashimoto, K-Y Kim, K-Y Kim, K-Y Kim, L McLerran, M Torabian, MA Metlitski, MG Alford, N Horigome, O Bergman, O Bergman, O Kaymakcalan, PV Buividovich, S Elitzur, SL Adler, SS Gubser, Stefan A. Stricker, T Sakai, T Sakai, WA Bardeen   +43 more
core   +1 more source

Electrical Manipulation of Field‐Free Magnetization Switching Driven by Spin‐Orbit Torque in Amorphous Gradient‐Mn3Sn

Advanced Science, EarlyView.
A highly efficient spin current with z‐polarization is achieved in amorphous Mn3Sn with a spontaneous composition gradient, which allows field‐free magnetization switching. Spin current efficiency and magnetization switching polarity are reversibly manipulated by ionic liquid gating, enabling logic functions by pure electrical methods. This work offers
Mingfang Zhang, Bin Cui, Taiyu An, Xue Ren, Weikang Liu, Xiangxiang Zhao, Hehe Ding, Zhiyu Zhang, Xu Zhang, Weijie Kuai, Guangjun Zhou, Bin Cheng, Liang Liu, Jifan Hu   +13 more
wiley   +1 more source

Hydrodynamic waves in an anomalous charged fluid

Physics Letters B, 2016
We study the collective excitations in a relativistic fluid with an anomalous U(1) current. In 3+1 dimensions at zero chemical potential, in addition to ordinary sound modes we find two propagating modes in presence of an external magnetic field.
Navid Abbasi, Ali Davody, Kasra Hejazi, Zahra Rezaei   +3 more
doaj  

Detect axial gauge fields with a calorimeter

SciPost Physics Core, 2020
Torsional strain in Weyl semimetals excites a unidirectional chiral density wave propagating in the direction of the torsional vector. This gapless excitation, named the chiral sound wave, is generated by a particular realization of the axial anomaly ...
Matteo Baggioli, Maxim N. Chernodub, Karl Landsteiner, Maria A. H. Vozmediano
doaj   +1 more source

Chiral-anomaly-driven magnetotransport in the correlated Weyl magnet Mn$_3$Sn [PDF]

arXiv, 2022
The quest for topological states in strongly correlated materials is challenging but essential from fundamental research and application perspectives. The magnetic Weyl semimetal (WSM) state in the chiral antiferromagnet Mn$_3$Sn emerges with strong electronic correlations, offering an intriguing arena for exploring the interplay between Weyl fermions ...
arxiv  

Tuning the Magnetism in Ultrathin CrxTey Films by Lattice Dimensionality

Advanced Electronic Materials, EarlyView.
By a joint study combining phase‐controlled molecular beam epitaxy, magnetization, magneto‐transport measurements, spin‐polarized scanning tunneling microscopy, and density functional theory calculations, the authors elucidate how the macroscopic magnetic properties of ultrathin CrTe2 and Cr3Te4 films are tuned by the dimensionality of exchange ...
Guangyao Miao, Minghui Gu, Haojie Sun, Pan Chen, Jiade Li, Siwei Xue, Nuoyu Su, Zhibin Su, Weiliang Zhong, Zhihan Zhang, Xuetao Zhu, Jiandi Zhang, Yugui Yao, Wei Jiang, Meng Meng, Weihua Wang, Jiandong Guo   +16 more
wiley   +1 more source

Gapped Chiral Fermions

Physical Review X, 2021
In principle, there is no obstacle to gapping fermions preserving any global symmetry that does not suffer a ’t Hooft anomaly. In practice, preserving a symmetry that is realized on fermions in a chiral manner necessitates some dynamics beyond simple ...
Shlomo S. Razamat, David Tong
doaj   +1 more source

Chiral Lattice Fermions, Minimal Doubling, and the Axial Anomaly

, 2010
Exact chiral symmetry at finite lattice spacing would preclude the axial anomaly. In order to describe a continuum quantum field theory of Dirac fermions, lattice actions with purported exact chiral symmetry must break the flavor-singlet axial symmetry ...
Tiburzi, Brian C.
core   +1 more source

New algebraic equation determining anomalies [PDF]

arXiv, 1995
We derive a new algebraic relation which can be used to find various spinor loop anomalies. We show that this relation includes the Wess-Zumino consistency condition. For an example, we consider the chiral anomaly. With this formalism, the consistent anomaly and the covariant anomaly are determined simultaneously.
arxiv