1 2 N ov 2 01 0 Spin waves in the ( π , 0 ) magnetically ordered iron chalcogenide Fe

Spin waves in the (π,0) magnetically ordered iron chalcogenide Fe1.05Te.

We use neutron scattering to show that spin waves in the iron chalcogenide Fe(1.05)Te display novel dispersion clearly different from both the first principles density functional calculations and recent observations in the related iron pnictide CaFe(2)As(2). By fitting to a Heisenberg Hamiltonian, we find that although the nearest-neighbor exchange couplings in the two systems are quite differe...

Evidence of spin-wave demagnetization in Fe–Cr giant magnetoresistance multilayers

The temperature dependence of the saturation magnetization of Xe ion-beam sputtered Fe–Cr multilayers has been measured between 5 and 300 K in the presence of a field greater than the saturation field sHsatd. With the application of Hsat, the zero-field antiferromagnetically coupled ferromagnetic Fe layers are forced to align ferromagnetically. We find that the thermal demagnetization of such m...

Incommensurate spin density waves in iron aluminides.

Neutron diffraction in Fe(Al) reveals incommensurate spin density waves (SDWs) in alloys known to be spin glasses. The wave vectors for crystals of Fe(34Al), Fe(40Al), and Fe(43Al) show n varying from 11 to 6 for q-->=2pi(h+/-1/n,k+/-1/n,l+/-1/n)/a(0), where (h,k,l) and a(0) characterize the parent bcc lattice of the CsCl structure. The magnetic reflections are present far above the spin-glass ...

0 v 1 2 5 Fe b 20 03 ππ scattering S wave from the data on the reaction π − p → π 0 π 0

0 v 2 2 N ov 1 99 4 NCKU - HEP / 94 - 01 27 October 1994 Spin Structure of the Proton

By assuming that there is no significant intrinsic polarization of the gluon, we have computed the polarized quark contributions to the proton’s spin under SU(3) flavor symmetry breaking for the polarized sea and have performed a global leading-order QCD fit to obtain the spin-dependent quark distributions, which could be used as input for analyzing lepton-hadron and hadron-hadron collisions.