Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 18, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3425764
Keywords
ferromagnetic materials; Josephson effect; magnetisation; spin-orbit interactions; superconducting transitions; two-dimensional electron gas
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Funding
- Research Grants Council of Hong Kong SAR, China [CityU 100308/08P]
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We study the electrical control of 0-pi transition in Josephson junctions with a ferromagnet/two-dimensional electron gas (2DEG)/ferromagnet coupling layer. There is Rashba spin-orbit coupling in the 2DEG and the three layer structure is a Datta-Das spin transistor. When electrons or holes travel through the 2DEG layer, their spins are rotated by the spin-orbit coupling, which is equivalent to varying the angle between the magnetizations of the two ferromagnetic layers and thus leading to a 0-pi transition. We show that the 0-pi transition can be fully controlled by tuning the strength of spin-orbit coupling. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3425764]
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