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Temperature-driven band motion prior to the phase transition of an itinerant ferromagnet
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10.1063/1.2151161
/content/aip/journal/jap/99/8/10.1063/1.2151161
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/8/10.1063/1.2151161
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Color map showing bias and temperature dependence of the TMR in a MTJ (upper) and cuts showing the bias dependence of TMR at various temperatures (lower). The low-temperature spin polarization of is and the Curie temperature is .

Image of FIG. 2.
FIG. 2.

(Color online) Odd part of the TMR (left) at various temperatures and the position of the peak in the odd-TMR as a function of temperature (right), showing the movement of the minority-spin band close to but just above the Fermi energy in CuNi. The motion of the band is clearly different from the temperature dependence of the magnetization in CuNi. The odd-TMR spectra are vertically offset for clarity.

Image of FIG. 3.
FIG. 3.

(Color online) Tunneling spin polarization as a function of magnetic moment at various temperatures for in a MTJ. Lines through the data are calculations using the extended Stearns model with either one or two sets of contributing bands. The inset shows a schematic of the spin-polarized band structure within a two-band extended Stearns model. The are weighting factors relating to the transmission coefficient for a given state.

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/content/aip/journal/jap/99/8/10.1063/1.2151161
2006-04-17
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Temperature-driven band motion prior to the phase transition of an itinerant ferromagnet
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/8/10.1063/1.2151161
10.1063/1.2151161
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