7 papers
Prediction of two-dimensional -electron half-metallic ferrimagnets
J. Phillips, J. C. G. Henriques, J. Fernández-Rossier +1
We propose a strategy to obtain conducting organic materials with fully spin-polarized Fermi surface, lying at a singular flat band, with antiferromagnetically coupled magnetic mom…
Ultra-long-range spin coupling in graphene revealed by atomically resolved spin excitations
Beatriz Viña-Bausá, Antonio. T. Costa, Joao Henriques +6
Magnetic interactions between localized spins-1/2 play a central role in quantum magnetism, spin-based quantum computing, and quantum simulation. The range and strength of these in…
Two topological phases in exchange alternating spin-1 nanographene chains
João C. G. Henriques, Yelko del Castillo, Ricardo Segundo +2
Magnetic nanographenes are emerging as versatile building blocks for artificial spin lattices, enabling the exploration of flagship one-dimensional quantum-magnetism models with un…
Preparation of the single-spinon wave function on a quantum computer
D. Faílde, A. Gómez, J. Fernández-Rossier
We address the problem of how to prepare single-spinon wave functions, relevant for one-dimensional spin models, in a quantum computer. We adopt the recently proposed ansat…
Characterizing AKLT Hamiltonian with Scanning Tunneling Spectroscopy
M. Ferri-Cortés, J. C. G. Henriques, J. Fernández-Rossier
The AKLT Hamiltonian is a particular instance of a general class of model Hamiltonians defined in lattices with coordination where each site hosts a spins , interacting…
On determining the energy dispersion of spin excitations with scanning tunneling spectroscopy
J. C. G. Henriques, Chenxiao Zhao, G. Catarina +3
Conventional methods to measure the dispersion relations of collective spin excitations involve probing bulk samples with particles such as neutrons, photons or electrons, which ca…
Exotic edge states of C3 high-fold fermions in honeycomb lattices
L. Madail, R. G. Dias, J. Fernández-Rossier
A generalization of the graphene honeycomb model to the case where each site in the honeycomb lattice contains a fold degenerate set of eigenstates of the symmetry has be…