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Spin-filtering efficiency of ferrimagnetic spinels CoFe2O4 and NiFe2O4
(2013)
We assess the potential of the ferrimagnetic spinel ferrites CoFe
2
O
4
and NiFe
2
O
4
to act as spin filtering barriers
in magnetic tunnel junctions. Our study is based on the electronic structure calculated by ...
Electric field response of strongly correlated one-dimensional metals: a Bethe-Ansatz density functional theory study
(2010)
We present a theoretical study on the response properties to an external electric field of strongly correlated
one-dimensional metals. Our investigation is based on the recently developed Bethe ansatz local-density
app ...
Magnetism and Antiferroelectricity in MgB6
(2012)
We report on a density functional theory study demonstrating the coexistence of weak ferromagnetism and antiferroelectricity in boron-deficient MgB 6. A boron vacancy produces an almost one dimensional extended molecular ...
Site-specific order and magnetism in tetragonal Mn3Ga thin films
(2013)
Mn
3
Ga bulk material and thin films deposited on several different substrates have been investigated using
x-ray and neutron diffraction, x-ray absorption spectroscopy, x-ray magnetic circular dichroism, and ...
Perturbative approach to the Kondo effect in magnetic atoms on nonmagnetic substrates
(2011)
Recent experimental advances in scanning tunneling microscopy make the measurement of the conductance
spectra of isolated and magnetically coupled atoms on nonmagnetic substrates possible. Notably, these spectra ...
First-principles study of high-conductance DNA sequencing with carbon nanotube electrodes
(2012)
Rapid and cost-effective DNA sequencing at the single nucleotide level might be achieved by measuring
a transverse electronic current as single-stranded DNA is pulled through a nanometer-sized pore. In order to
enhance ...
Efficient spin injection and giant magnetoresistance in Fe/MoS2/Fe junctions
(2014)
We demonstrate giant magnetoresistance in Fe/MoS2/Fe junctions by means of ab initio transport calculations. We show that junctions incorporating either a monolayer or a bilayer of MoS2 are metallic and that Fe acts as an ...
Nucleobase adsorbed at graphene devices: Enhance bio-sensorics
(2012)
Graphene as a good material for sensing single small molecules is hardly believed to identify bio-molecules via electrical currents. This is because bio-molecules tend to bind to graphene through non-covalent bonds, such ...
Magnetic interaction of Co ions near the {10\bar{1}0} ZnO surface
(2010)
Co-doped ZnO is the prototypical dilute magnetic oxide showing many of the characteristics of ferromagnetism. The microscopic origin of the long range order however remains elusive, since the conventional mechanisms for ...
Quantum transport of Au-S-S-Au nanoscale junctions
(2012)
Transport in S2 molecules sandwiched between Au electrodes is investigated with a combination of density functional theory and the non-equilibrium Green?s function method. We consider four different configurations and find ...