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Siesta I - Psi-k

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Magnetoresistance measurements<br />

50<br />

40<br />

5 K<br />

25 mV<br />

a<br />

V (mV)<br />

0 100 200 300 400 500<br />

b<br />

MC (%)<br />

30<br />

20<br />

10<br />

25 mV<br />

5 K<br />

0<br />

-150 -100 -50 0 50 100 150<br />

B (mT)<br />

0 20 40 60 80 100 120<br />

T (K)<br />

Varying external B field, change relative spin orientation,<br />

important change in resistance<br />

L. E. Hueso et al, Nature 2007

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