Spin signal in metallic lateral spin valves made by a multiple angle evaporation technique

Piotr La̧czkowski, Laurent Vila, Sara Ferry, Alain Marty, Jean Marie George, Henri Jaffrès, Albert Fert, Takashi Kimura, Tao Yang, Yoshi Chika Otani, Jean Philippe Attané

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

We report on the fabrication of metallic lateral spin valves using different evaporation directions for respective ferromagnetic and nonmagnetic materials. In this way, we can fabricate and connect different nanowires through the same resist mask in a single evaporation sequence, avoiding interface contamination. With this technique and by reducing the wire widths down to 50 nm, we obtained spin signals as large as 24mω at 77 K in devices with transparent interfaces. We studied the influence of the nonmagnetic metal. Spin signals are found to be much larger for Al and Cu than for Au-based devices.

Original languageEnglish
Article number063007
JournalApplied Physics Express
Volume4
Issue number6
DOIs
Publication statusPublished - Jun 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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