Results 81 to 90 of about 65,044 (378)
, 2009 Single crystal neutron diffraction is used to investigate the magnetic and structural phase diagram of the electron doped superconductor Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$.
Analytis, J. G. +8 more
core +1 more source
Superconductivity, antiferromagnetism and phase separation in the two-dimensional Hubbard model: A dual-fermion approach [PDF]
, 2014 The dual-fermion approach offers a way to perform diagrammatic expansion around the dynamical mean-field theory. Using this formalism, the influence of antiferromagnetic fluctuations on the self-energy is taken into account through ladder-type diagrams ...
J. Otsuki, H. Hafermann, A. Lichtenstein
semanticscholar +1 more source
Half-Metallic Antiferromagnets [PDF]
Physical Review Letters, 1995 This Letter discusses the possibility of realizing half-metallic antiferromagnets, i.e., systems with 100% spin polarization of the conduction electrons without showing a net magnetization. The predictions are based on electronic structure calculations using the local density approximation.
Leuken, H. van, Degroot, R.A.
openaire +4 more sources
Advanced Functional Materials, EarlyView.This work investigates the Nernst effect in the Kagome magnet ErMn6Sn6 which exhibits both topological and anomalous Nernst effects with the anomalous Nernst coefficient reaching 1.71 µV K⁻¹ at 300 K. This value surpasses that of most canted antiferromagnetic materials, making ErMn6Sn6 a promising candidate for advancing thermoelectric devices based on
Olajumoke Oluwatobiloba Emmanuel +2 more
wiley +1 more source
Super-exchange theory for polyvalent anion magnets
New Journal of Physics, 2019 The Goodenough–Kanamori–Anderson (GKA) rules have been widely applied for explaining the magnetic properties induced by super-exchange interaction. As conclusions of the super-exchange theory, they reveal the antiferromagnetic (ferromagnetic) ordering ...
Fang Zhang +6 more
doaj +1 more source
, 2006 We analyze the competition between antiferromagnetism and superconductivity in the two-dimensional Hubbard model by combining a functional renormalization group flow with a mean-field theory for spontaneous symmetry breaking.
Metzner, W., Reiss, J., Rohe, D.
core +1 more source
Antiferromagnetic magnonic crystals [PDF]
Physical Review B, 2015 We describe the features of magnonic crystals based upon antiferromagnetic elements. Our main results are that with a periodic modulation of either magnetic fields or system characteristics, such as the anisotropy, it is possible to tailor the spin wave spectra of antiferromagnetic systems into a band-like organization that displays a segregation of ...
Troncoso Coña, Roberto +3 more
openaire +5 more sources
Control of Ferromagnetism of Vanadium Oxide Thin Films by Oxidation States
Advanced Functional Materials, EarlyView.The nonstoichiometric VOx exhibits a distinct ferromagnetic hysteresis loop and demonstrates a high magnetic susceptibility (χ=dMdH$ = \frac{{dM}}{{dH}}\;$∼10). Micromagnetic simulations show the results of the “partial volume fraction ferromagnetic phase model” for VOx/Co/Pt structure.
Kwonjin Park +9 more
wiley +1 more source
Spin-transfer torque induced spin waves in antiferromagnetic insulators
New Journal of Physics, 2015 We explore the possibility of exciting spin waves in insulating antiferromagnetic films by injecting spin current at the surface. We analyze both magnetically compensated and uncompensated interfaces.
Matthew W Daniels +4 more
doaj +1 more source
Antiferromagnetic ordering of itinerant systems in modified mean-field theory
, 2004 This is an analysis of the itinerant model for antiferromagnetism, in which is included both on-site and inter-site electron correlations. We also consider the band degeneration, which brings into the Hamiltonian the on-site exchange interactions.
Amadon +18 more
core +1 more source