Hydrogen patterning of Ga1-xMnxAs for planar spintronics

Physics – Condensed Matter – Materials Science

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

ICDS-24, July 2007. 8 pages with 4 figures

Scientific paper

We demonstrate two patterning techniques based on hydrogen passivation of Ga1-xMnxAs to produce isolated ferromagnetically active regions embedded uniformly in a paramagnetic, insulating host. The first method consists of selective hydrogenation of Ga1-xMnxAs by lithographic masking. Magnetotransport measurements of Hall-bars made in this manner display the characteristic properties of the hole-mediated ferromagnetic phase, which result from good pattern isolation. Arrays of Ga1-xMnxAs dots as small as 250 nm across have been realized by this process. The second process consists of blanket hydrogenation of Ga1-xMnxAs followed by local reactivation using confined low-power pulsed-laser annealing. Conductance imaging reveals local electrical reactivation of micrometer-sized regions that accompanies the restoration of ferromagnetism. The spatial resolution achievable with this method can potentially reach <100 nm by employing near-field laser processing. The high spatial resolution attainable by hydrogenation patterning enables the development of systems with novel functionalities such as lateral spin-injection as well as the exploration of magnetization dynamics in individual and coupled structures made from this novel class of semiconductors.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Hydrogen patterning of Ga1-xMnxAs for planar spintronics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Hydrogen patterning of Ga1-xMnxAs for planar spintronics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrogen patterning of Ga1-xMnxAs for planar spintronics will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-245316

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.