Structurally controllable spin spatial splitter in a hybrid ferromagnet and semiconductor nanostructure

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4875380· OSTI ID:22275584

Lu, Mao-Wang; Cao, Xue-Li; Huang, Xin-Hong; Jiang, Ya-Qing; Li, Shuai ^[1]

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1. College of Science, Guilin University of Technology, Guilin 541004 (China)

We theoretically investigate modulation of a tunable δ-potential to the lateral displacement of electrons across a magnetically modulated semiconductor nanostructure. Experimentally, this nanostructure can be produced by depositing a nanosized ferromagnetic stripe with in-plane magnetization on top of a semiconductor heterostructure, while the δ-potential can be realized by means of the atomic layer doping technique. Theoretical analysis reveals that this δ-doping can break the intrinsic symmetry in nanostructure and a considerable spin polarization in the lateral displacement will appear. Numerical calculations demonstrate that both magnitude and sign of spin polarization can be manipulated by changing the height and/or position of the δ-doping, giving rise to a structurally tunable spin spatial splitter.

• OSTI ID: 22275584
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ELECTRONS
FERROMAGNETIC MATERIALS
LAYERS
MAGNETIZATION
MODULATION
NANOSTRUCTURES
POTENTIALS
SEMICONDUCTOR MATERIALS
SPIN
SPIN ORIENTATION
SYMMETRY