Spin Seebeck effect and thermal spin galvanic effect in Ni80Fe20/p-Si bilayers

@article{Bhardwaj2018SpinSE,
  title={Spin Seebeck effect and thermal spin galvanic effect in Ni80Fe20/p-Si bilayers},
  author={Ravi Bhardwaj and Paul C. Lou and Sandeep Kumar},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  year={2018}
}
The development of spintronics and spin-caloritronics devices need efficient generation, detection and manipulation of spin current. The thermal spin current from spin-Seebeck effect has been reported to be more energy efficient than the electrical spin injection methods. But, spin detection has been the one of the bottlenecks since metals with large spin-orbit coupling is an essential requirement. In this work, we report an efficient thermal generation and interfacial detection of spin current… Expand
Generation and detection of dissipationless spin current in a MgO/Si bilayer.
  • P. Lou, Sandeep Kumar
  • Physics, Materials Science
  • Journal of physics. Condensed matter : an Institute of Physics journal
  • 2018
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References

SHOWING 1-10 OF 57 REFERENCES
Spin mediated magneto-electro-thermal transport behavior in Ni80Fe20/MgO/p-Si thin films
In Si, the spin-phonon interaction is the primary spin relaxation mechanism. At low temperatures, the absence of spin-phonon relaxation will lead to enhanced spin accumulation. Spin accumulation mayExpand
Spin-Hall effect and emergent antiferromagnetic phase transition in n-Si
Abstract Spin current experiences minimal dephasing and scattering in Si due to small spin-orbit coupling and spin-lattice interactions is the primary source of spin relaxation. We hypothesize thatExpand
Observation of the spin-Seebeck effect in a ferromagnetic semiconductor.
TLDR
The spin-Seebeck effect is observed in a ferromagnetic semiconductor, GaMnAs, which allows flexible design of the magnetization directions, a larger spin polarization, and measurements across the magnetic phase transition, even in the absence of longitudinal charge transport. Expand
Longitudinal spin Seebeck effect: from fundamentals to applications.
TLDR
Basic experiments on the LSSE in insulators provide a novel and versatile pathway to thermoelectric generation in combination of the inverse spin-Hall effects. Expand
Giant spin Seebeck effect in a non-magnetic material
TLDR
It is proposed that the giant spin Seebeck effect is mediated by phonon–electron drag, which changes the electrons’ momentum and directly modifies the spin-splitting energy through spin–orbit interactions. Expand
Robust spin-orbit torque and spin-galvanic effect at the Fe/GaAs (001) interface at room temperature
TLDR
It is found that the magnitude of the interfacial SOT, caused by the reduced symmetry at the interface, is comparably strong as in ferromagnetic metal/non-magnetic metal systems, and suggests that single crystalline Fe/GaAs interfaces may enable efficient electrical magnetization manipulation. Expand
Spin mediated enhanced negative magnetoresistance in Ni80Fe20 and p-silicon bilayer
Abstract In this work, we present an experimental study of spin mediated enhanced negative magnetoresistance in Ni 80 Fe 20 (50 nm)/p-Si (350 nm) bilayer. The resistance measurement shows a reductionExpand
Spin-dependent Seebeck coefficients of Ni80Fe20 and Co in nanopillar spin valves
TLDR
The spin-dependent Seebeck coefficient is experimentally determined using nanopillar spin valve devices, a stack of two ferromagnetic layers separated by a nonmagnetic layer, in agreement with earlier theoretical work in Co/Cu multilayers and spin- dependent Seebeck andspin-dependent Peltier measurements. Expand
Complementary spin-Hall and inverse spin-galvanic effect torques in a ferromagnet/semiconductor bilayer.
TLDR
A vector analysis of the torques in a prepared epitaxial transition-metal ferromagnet/semiconductor-paramagnet single-crystal structure by means of the all-electrical ferromagnetic resonance technique is shown. Expand
Thermal spin pumping and magnon-phonon-mediated spin-Seebeck effect
TLDR
The phonon-mediated non-equilibrium that drives the thermal spin pumping is confirmed also by temperature-dependent measurements, giving rise to a giant enhancement of the SSE signals at low temperatures. Expand
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