2024
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4 days ago · (a) Band structure and (b) Fermi surface of 16-orbital model. The color bar indicates the orbital weight of Ni − d 3 z 2 − r 2 and d x 2 − y 2 orbitals. The grey lines in (a) are band structures from DFT (LDA, U = 0 eV). The diamond shape in (b) indicates the folded Brillouin zone. (c) Schematic of 16 orbitals for 16-orbital model. Reuse ...
22 hours ago · The majority of electronic transitions related to the band gap arise due to these specific orbitals. Furthermore, the application of an external electric field can adjust the band gap to zero, prompting a transition from semiconductor to metal at an electric field intensity of E = 0.9 V/Å.
2 days ago · This phenomenon may seem counter-intuitive at first glance since not only is the Rashba spin-orbit coupling in the electronic band structure, which results in the finite spin Hall conductivity 35 ...
5 days ago · We study theoretically the magic-angle twisted bilayer graphene with proximity-induced Ising and Rashba spin-orbit couplings on the top layer. Topological flat bands (with three distinct phases) are generically realized by the spin-orbit couplings. Using a mean field analysis, we find that (partial) valley polarization prevails for a wide range of doping, suppressing the usual ...
1 day ago · This letter reports a wide band linearly polarized(LP) and orbital angular momentum (OAM) mode reconfigurable magneto-electric (ME) dipole antenna array. A switchable microstrip balanced feed structure (MBFS), which can provide a stable phase difference of 180-degree in the whole operating frequency band, is employed in the design of ME dipole element. By using two orthogonal MBFS, two high ...
4 days ago · the second Bloch band of optical lattices [11–16]. Espe-cially, Bose-Einstein condensations with resulting exotic orbital orders have been observed by combining multi-orbital setting and the complex lattice structure, such as in the honeycomb and triangular lattices [14–16]. How-ever, loading ultracold fermionic atoms in the higher en-
3 days ago · July 3 (UPI) -- SpaceX early Wednesday launched a new round of Starlink satellites into orbit in its first launch for the month of July after it saw a slight delay. The liftoff at pad 40 took ...
