Enhanced spin Hall response from aligned Kramers-Weyl points in high Chern number semimetalsWe propose a spin Hall effect (SHE) enhancement mechanism due to Kramers-Weyl point (KWP) alignment in chiral topological semimetals with high Chern numbers. Through model Hamiltonian calculations, we identify ...
(A 3D Dirac point consists of two Weyl points of opposite chiralities.) Then a helical modulation amounts to a nonzero winding number for the phase of the Dirac mass around the helical axis. It was indicated, in previous theoretical models, that such a topological perturbation can generate ...
10 Chern number tuned by controlling the thickness of the middle magnetic TI layer. a–d, Dependence of ρxx (red) and ρyx (blue) on μ0H for the m = 2 sample, with different middle magnetic TI layer thicknesses d. All measurements were taken at the charge-neutral point (Vg = Vg...
The partition function of complex Chern–Simons theory on a 3-manifold with torus boundary reduces to a finite-dimensional state-integral which is a holomorphic function of a complexified Planck’s constant \tau in the complex cut plane and an entire function of a complex parameter u. This giv...
It is instructive to point out an interesting new geometrical fact in the 1<q
At the point in parameter space of the five- dimensional Lovelock theory that corresponds to CS gravity, the local symmetry of the theory is enhanced from SO(4, 1) (Lorentz group) to SO(4, 2) (the AdS5). CS supergravities with local symmetries that contain AdS groups are genuine gauge...
Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions The origin of anomalous Hall effect (AHE) in magnetic materials is one of the most intriguing aspect in condensed matter physics and has been controversial... Q Wang,Y Xu,R Lou,... - 《...
Chern陈省身传记 Shiing-shen Chern Born: 26 Oct 1911 in Chia-hsing (or Jiaxing), Chekiang province (now Zhejiang), China Died: 3 Dec 2004 in Tianjin Municipality, China Article by:J J O'Connor and E F Robertson November 1997 Edited by XiaJingbo, mailto: xjb@mail.hzau.edu.cn ...
the Landau problem, the relevant algebra is the Weyl-Heisenberg (WH) algebra of the so-called magnetic translation operators (MTO) [14]. What we would like to emphasize here is that in general there are two commuting WH algebras in the system, and not just one as usually considered in th...
The grey dashed line in a indicates the Weyl frequency in Fig. 2, and the grey rectangle in b indicates the bandgap of the photonic crystal in Fig. 2. c, Dispersionless μr and κ adopted in all simulations as a function of biasing magnetic fields. Extended Data Fig. 2 Chern-number ...