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By means of first-principles calculations, we have systematically investigated how the magnetodynamic properties Gilbert damping… Expand Whether at zero spin density $m=0$ and finite temperatures $T>0$ the spin stiffness of the spin-$1/2$ $XXX$ chain is finite or… Expand Rather generically, multicomponent superconductors and superfluids have intercomponent current-current interaction. We show that… Expand AA-stacked bilayer graphene supports Fermi circles in its bonding and antibonding bands which coincide exactly, leading to… Expand By reducing the dimensionality of a solid, its elec-tronic states and physical properties can be drasti-cally modiﬁed, but these… Expand Energy gaps are crucial aspects of the electronic structure of finite and extended systems. Whereas much is known about how to… Expand AbstractWe present numerical exact results for the ground state and the low-lying
excitations for the spin-1/2 J1-J2
Heisenberg… Expand Abstract We present a theory describing the superconducting (SC) interaction of Dirac electrons in a quasi-two-dimensional system… Expand Abstract.The long-range forces between holes in an antiferromagnet are due to
magnon exchange. The one-magnon exchange potential… Expand We discuss analogies between the charge- and spin response functions of itinerant magnets. We show that the spin-analog of the… Expand