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Magnetoelectric coupling at the interface of BiFeO3/La0.7Sr0.3MnO3 multilayers
M. J. Calderon, S. Liang, R. Yu +6
Electric-field controlled exchange bias in a heterostructure composed of the ferromagnetic manganite La0.7Sr0.3MO3 and the ferroelectric antiferromagnetic BiFeO3 has recently been…
Neutron and ARPES Constraints on the Couplings of the Multiorbital Hubbard Model for the Pnictides
Qinlong Luo, George Martins, Dao-Xin Yao +4
The results of neutron scattering and angle-resolved photoemission experiments for the Fe-pnictide parent compounds, and their metallic nature, are shown to impose severe constrain…
Orbital-weight redistribution triggered by spin order in the pnictides
Maria Daghofer, Qinlong Luo, Rong Yu +3
The one-particle spectral function and its orbital composition are investigated in a three-orbital model for the undoped parent compounds of the iron-based superconductors. In the…
Spin-Polarized Semiconductor Induced by Magnetic Impurities in Graphene
Maria Daghofer, Nan Zheng, Adriana Moreo
Magnetic impurities adsorbed on graphene are coupled magnetically via the itinerant electrons. This interaction opens a gap in the band structure of graphene. The result strongly d…
Comment on "Nonmagnetic Impurity Resonances as a Signature of Sign-Reversal Pairing in Fe-As-Based Superconductors"
Maria Daghofer, Adriana Moreo
In a recent Letter [PRL 103, 186402 (2009)], the energy band structure of Fe-As-based superconductors is fitted with a tight-binding model with two Fe ions per unit cell and two de…
Constraints Imposed by Symmetry on Pairing Operators for the Pnictides
Xiaoyu Wang, Maria Daghofer, Andrew Nicholson +3
Considering model Hamiltonians that respect the symmetry properties of the pnictides, it is argued that pairing interactions that couple electrons at different orbitals with an orb…