This paper describes a group theoretical classification of mean field solutions of e g Hubbard model on a two-dimensional triangular lattice. Only the point K in the first Brillouin zone is considered as an ordering vector. In total 13 broken symmetry states are obtained, and among them eight ...
a Momentum path in the Brillouin zone of the triangular lattice, b INS intensity for the Hamiltonian H2 without inter-plane interaction along the high symmetry lines in momentum space. The color plot shows ED results combined from different clusters up to 27 sites. Due to elsewise overbearing ...
a, Spinon dispersionωkof the zero-flux Hamiltonian. The grey plane marks the Fermi level atω = 0; its intersection with the band gives the Fermi surface. The light orange hexagon represents the projection of the first Brillouin zone. The maximum ofωkis 3tand the minimum is −6t,...
aMomentum path in the Brillouin zone of the triangular lattice,bINS intensity for the Hamiltonian{{{\mathcal{H}}}_{2}without inter-plane interaction along the high symmetry lines in momentum space. The color plot shows ED results combined from different clusters up to 27 sites. Due to elsew...
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www.nature.com/scientificreports OPEN Development of short and long‑range magnetic order in the double perovskite based frustrated triangular lattice antiferromagnet Ba MnTeO 26 J. Khatua1,7,8, T. Arh2,3, Shashi B. Mishra4, H. Luetkens5, A. Zorko2,3*, B....
on a lattice of 252 × 252 k-points with artificial line broadening of η = 0.05. and the dispersion is given by E k = A 2 k −B 2 k = (1 −ν k )(1 +2ν k ) . (14) The magnon dispersion E k is depicted in Fig. 2. It vanishes at the center of the zone, ...
Analysis of the spin and charge structure factors (static correlation functions) shows that, while the charge factor remains featureless, the spin factor develops a strong peak very close to the M ′ point (2π/3,0) of the small surface Brillouin zone (corresponding to the three-sublattice ...
Group theoretically possible spin density waves (SDWs) of the Hubbard model on a triangular lattice are found and classified for ordering vectors q of K and M in the Brillouin zone by finding the maximal subgroups of the symmetry group of the Hamiltonian. It is found that classifications of ...
By lowering the tunneling voltage into the energy range of interest and with no other contribution from elsewhere in the Brillouin zone, the STS signal becomes exclusively sensitive to the K/K′ valley states. Indeed, at 190 mV the charge maximum has shifted away from the atomic center to ...