Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).
NIST Authors in Bold
|Author(s):||Matthew R. Pufall; William H. Rippard; Thomas J. Silva;|
|Title:||Materials dependence of the spin-momentum transfer efficiency and critical current in ferromagnetic metal/Cu multilayers|
|Published:||July 14, 2003|
|Abstract:||We have quantitatively compared spin momentum transfer effects in FM/Cu multilayers, with FM = Co, Co90Fe10, Ni80Fe20, Ni40Fe10Cu50, and Fe. All of the measured multilayers exhibited an abrupt step in the resistance at a critical current Ic, the value of which was a linear function of applied magnetic field Happ. The spin-transfer efficiencies determined from these data were in reasonable agreement with their predicted values over the range of materials studied. Ic(Happ), when evaluated at zero net field, was found to increase with the exchange energy density of the ferromagnet, demonstrating the tunability of the critical current by materials selection.|
|Citation:||Applied Physics Letters|
|Pages:||pp. 323 - 325|
|PDF version:||Click here to retrieve PDF version of paper (164KB)|