magnetisation/ 2D-honeycomb latticespin modesexchange integralsmagnetization propagation vectors2D-hexagonal latticesferromagnetic spin configuration/ A7525 Spin arrangements in magnetically ordered materials A7530E Exchange and superexchange interactions in magnetically ordered materials A7560E Magnetization curves, ...
5(b), has Bravais lattice vectors (3x,0) and (0,\sqrt{3}y). Similar zigzag pattern states for filling n=1/3 in a honeycomb lattice, forming a charge density, were also found by minimizing the energy of only the interaction part of the Hamiltonian48. Intuitively, the robustness of ...
For the general honeycomb lattice with the bond angle θ, the primitive lattice vectors are and . The primitive reciprocal lattice vectors are and . For case, such as graphene, the symmetric Brillouin zone is hexagon, i.e., the area enclosed by the black lines in Fig. 6(a). An alternat...
Fig. 2. (a) The honeycomb lattice structure of graphene with two atoms, A and B, per unit cell. a1 and a2 are the lattice vectors and a = 1.42 Å is the in-plane nearest-neighbor distance. (b) Brillouin zone of graphene with representation of Dirac cones near the K and K’ poin...
,D6 in the fundamental domain {a1g1+a2g2|a1,a2∈[0,1)} associated to the lattice vectors g1=(30),g2=(3/23/2). Fig. 4 The first Brillouin zone associated to the hexagonal structure used in Sect. 3.4 is colored in grey. On it are displayed the high symmetry points ( Γ, K...
Erratum: Stripe order on the spin-1 stacked honeycomb lattice in Ba2Ni(PO4)2 [Phys. Rev. B 95 , 024401 (2017)] Tsirlin, and A. Thamizhavel, Stripe order on the spin-1 stacked honeycomb lattice in Ba2Ni(PO4)2, Phys. Rev. B 95, 024401 (2017)... A Yogi,A Bera,A Maurya...
Motivated by the recent numerical evidence [Z. Meng, T. Lang, S. Wessel, F. Assaad, and A. Muramatsu, Nature (London) 464, 847 (2010)] of a short-range resonating valence bond state in the honeycomb lattice Hubbard model, we consider Schwinger boson mean field theories of possible spin...
We identify thewavevectors of the lowest triplet excitations, which can be verified usingexact diagonalization or DMRG studies. When $J_2$ is reduced, we can haveeither a deconfined Quantum Phase Transition (QPT) or a first-order transitioninto a N\\'eel state. When $J_2$ is increased,...
A. Di Ciolo, J. Carrasquilla, F. Becca, M. Rigol, and V. Galitski, "Spiral antifer- romagnets beyond the spin-wave approximation: Frustrated xy and heisenberg models on the honeycomb lattice," Phys. Rev. B, vol. 89, p. 094413, Mar 2014....
where \({e}^{i{\vartheta }_{{\bf{q}}}={\lambda }_{{\bf{q}}}/| {\lambda }_{{\bf{q}}}|\), and r1,2,3 are the three bond vectors connecting nearest-neighbor sites on the honeycomb lattice. For the longitudinal component, the spins must be expanded up to quadratic order...