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Phys. Rev. B 66, 020403(R) (2002) [3 pages]

Ballistic magnetoresistance over 3000% in Ni nanocontacts at room temperature

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Harsh Deep Chopra* and Susan Z. Hua
Thin Films & Nanosynthesis Laboratory, Materials Program, Mechanical & Aerospace Engineering Department, State University of New York at Buffalo, Buffalo, New York 14260

Received 30 April 2002; published 26 June 2002

This paper reports ballistic magnetoresistance (BMR) measurements in Ni nanocontacts made by electrodeposition. BMR in excess of 3000% is observed at room temperature and the observed large values of BMR are obtained in switching fields of only a few hundred oersteds. The results are attributed to spin-dependent electron transport across nanometer sharp domain walls within the nanocontacts.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.66.020403
DOI:
10.1103/PhysRevB.66.020403
PACS:
72.15.Gd, 75.70.-i

*Corresponding author. Email address: hchopra@eng.buffalo.edu

 
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