Spin-polarized transport in ferromagnet-marginal Fermi liquid systems

@article{Mu2005SpinpolarizedTI,
  title={Spin-polarized transport in ferromagnet-marginal Fermi liquid systems},
  author={Hai-feng Mu and Gang Su and Qing-Rong Zheng and Biao Jin},
  journal={Physical Review B},
  year={2005},
  volume={71},
  pages={064412}
}
Spin-polarized transport through a marginal Fermi liquid (MFL) which is connected to two noncollinear ferromagnets via tunnel junctions is discussed in terms of the nonequilibrium Green function approach. It is found that the current-voltage characteristics deviate obviously from the ohmic behavior, and the tunnel current increases slightly with temperature, in contrast to those of the system with a Fermi liquid. The tunnel magnetoresistance (TMR) is observed to decay exponentially with… 
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References

SHOWING 1-10 OF 28 REFERENCES
Nonlinear Spin Polarized Transport through a Ferromagnetic-Nonmagnetic-Ferromagnetic Junction
We present a theoretical analysis of the nonlinear bias and temperature dependence of current-voltage characteristics of a spin-valve device which is formed by connecting a nonmagnetic system to two
Mesoscopic tunneling magnetoresistance
We study spin-dependent transport through ferromagnet/normal-metal/ferromagnet double tunnel junctions in the mesoscopic Coulomb-blockade regime. We calculate the conductance in the absence or
Spin-polarized tunneling of La0.67Sr0.33MnO3/YBa2Cu3O7−δ junctions
Abstract The transport properties in contacts between ferromagnets and high- T c superconductors were investigated in La 0.67 Sr 0.33 MnO 3 /YBa 2 Cu 3 O 7− δ cross-strip junctions. The conductance
Spin-polarized transport through a quantum dot: Anderson model with on-site Coulomb repulsion
We report on a theoretical analysis of transport characteristics of a spin-valve system formed by a quantum dot connecting to two ferromagnetic electrodes whose magnetic moments are oriented at an
Spin-dependent transport through an interacting quantum dot.
TLDR
The Kondo resonance and the correlation-induced spin splitting of the dot levels may be systematically controlled by internal magnetization in the electrodes and the linear conductance is characterized by two spin-resolved peaks.
SPIN-TUNNELING IN FERROMAGNETIC JUNCTIONS
▪ Abstract Based on the spin conservation in electron tunneling across an insulator (I) and the spin polarization of conduction electrons in ferromagnets (FM) established by Meservey and Tedrow,
Probing Ferromagnets with Andreev Reflection
High transmissivity, ferromagnet-superconductor thin film nanocontacts are studied experimentally. Compared to nonmagnetic metal-superconductor contacts, Andreev reflection is strongly suppressed due
Spin-polarized quasiparticle injection devices using Au/YBa2Cu3O7/LaAlO3/Nd0.7Sr0.3MnO3 heterostructures
Oxide heterostructures were used for studies of quasiparticle injection effects in high-Tc superconducting thin films. The effect of injection of spin polarized quasiparticles from a ferromagnetic
Kondo-type transport through an interacting quantum dot coupled to ferromagnetic leads
We investigate the equilibrium and out-of-equilibrium Kondo effects in a single-level interacting quantum dot connected to two ferromagnetic leads. Within the noncrossing approximation, we calculate
TUNNELING MEASUREMENTS OF THE ENERGY GAP IN HIGH-Tc SUPERCONDUCTORS
The current status of tunneling measurements of the superconducting density of states near the Fermi level of high-Tc superconductors is reviewed. A number of the characteristics of the tunneling
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