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Tunneling anisotropic magnetoresistance of NiFe/IrMn/MgO/Pt stack: An antiferromagnet based spin-valve
anisotropic magnetoresistance NiFe/IrMn/MgO/Pt stack
2010/11/22
Spin-valve is a microelectronic device in which high and low resistance states are realized by utilizing both charge and spin of carriers. Spin-valve struc-tures used in modern hard drive read-heads a...
Spin wave calculation of the field-dependent magnetization pattern around an impurity in Heisenberg antiferromagnets
Spin wave calculation field-dependent magnetization pattern Heisenberg antiferromagnets
2010/11/18
We consider the magnetic- eld dependent spatial magnetization pattern around a general impurity embedded in a Heisenberg antiferromagnet using both an analytical and a numerical spin wave approach. Th...
Magnetic order, metamagnetic transitions, and low-temperature spin freezing in Ca2Co2O6: an NMR study
Magnetic order metamagnetic transitions low-temperature spin
2010/11/18
We report on a 59Co NMR investigation of the trigonal cobaltate Ca3Co2O6 carried out on a single crystal, providing precise determinations of the electric field gradient and chemical shift tensors, an...
Magnetic phase diagram of spatially anisotropic, frustrated spin-1/2 Heisenberg antiferromagnet on a stacked square lattice
Magnetic phase diagram of spatially anisotropic stacked square lattice
2010/11/17
Magnetic phase diagram of a spatially anisotropic, frustrated spin- 12 Heisenberg antiferromagnet on a stacked square lattice is investigated using second-order spin-wave expansion.
Level crossings and zero-field splitting in the \{Cr$_8$\}-cubane spin-cluster by inelastic neutron scattering and magnetization studies
Level crossings zero-field splitting inelastic neutron scattering magnetization studies
2010/11/17
Inelastic neutron scattering in variable magnetic field and high-field magnetization measurements,at the milikelvin temperature range, were performed to gain insight into the low-energy magnetic excit...
Spin and orbital mechanisms of the magneto-gyrotropic photogalvanic effects in GaAs/AlGaAs quantum well structures
Spin orbital mechanisms of the magneto-gyrotropic photogalvanic effects
2010/11/24
We report on the study of the linear and circular magneto-gyrotropic photogalvanic effect (MPGE)in GaAs/AlGaAs quantum well structures. Using the fact that in such structures the Land´e-factor g...
Time reparametrization symmetry in a short-range p-spin model
Time reparametrization symmetry short-range p-spin model
2010/11/19
We explore the existence of time reparametrization symmetry in the p-spin model. Using the Martin-Siggia-Rose generating functional, we analytically probe the long-time dynamics. We perform a Renormal...
Dirac Strings and Magnetic Monopoles in Spin Ice Dy2Ti2O7
Dirac Strings Magnetic Spin Ice Dy2Ti2O7
2010/11/18
While sources of magnetic fields — magnetic monopoles — have so far proven elusive as
elementary particles, several scenarios have been proposed recently in condensed matter physics
of emergent quas...
Low-energy spin dynamics in the [YPc2]0 S=1/2 antiferromagnetic chain
Low-energy spin dynamics YPc2]0 S=1/2 antiferromagnetic chain
2010/11/18
H nuclear magnetic resonance (NMR) measurements in [YPc2]0, an organic compound formed
by radicals stacking along chains, are presented. The temperature dependence of the macroscopic
susceptibility,...