(Microsoft PowerPoint - Acad\351mie_08.ppt [Lecture seule])

More documents

Recommendations

Info

$(Microsoft PowerPoint - Lanzarote - Les origines de l'arch\351ologie ...$

• Magnetic Tunnel Junctions,Tunneling Magnetoresistance (TMR)ferromagneticelectrodesJullière, 1975,low T, hardlyreproducible≈ 0.1 µmPLow resistance statetunnelingbarrier(insulator)~ 100 nmAPHigh resistance stateMoodera et al, 1995, Miyasaki et al,1995, CoFeCoFe/Al/Al2O3/CoCo, MR ≈3030-40%Applications: - read heads of Hard Disc Drive- M-RAM (Magnetic Random Access Memory)MRAM: density/speed ofDRAM/SRAM +nonvolatilty + lowenergy consumption
1)Epitaxial magnetic tunnel junctions (MgO, etc)First examples on Fe/MgO/Fe(001):CNRS/Thales (Bowen, AF et al, APL2001)Nancy (Faure-Vincent et al, APL 2003)Tsukuba (Yuasa et al, Nature Mat. 2005)IBM (Parkin et al, Nature Mat. 2005)….etcYuasa et al, Fe/MgO/FeNature Mat. 2005∆R/R = (R AP -R P )/ R P ≈ 200% at RT2006-2007CoFeB/MgO/CoFeB,∆R/R ≈ 500% at RT in severallaboratories in 2006-2007+Clearer picture of thephysics of TMR:what is inside the word« spin polarization »?
Page 3 and 4: Mixing impurities A and B with oppo
Page 5 and 6: •Multicouches magnétiquesFeCrFeC
Page 7 and 8: •Multicouches magnétiquesAimanta
Page 9 and 10: • Magnetoresistance Géante (GMR)
Page 11 and 12: • Magnetoresistance Géante (GMR)
Page 13 and 14: • Enregistrement magnétique: év
Page 15: Analyse biologique« biochips »que
Page 19 and 20: Transfert de spin(renversement d’
Page 21 and 22: Co/Cu: Current in Plane (CIP)-GMR(M
Page 23 and 24: Spin injection/extraction at a Semi
Page 25 and 26: Concept du transfert de spin (Slonc
Page 27 and 28: Experiments on pillarsAuFree ferroC
Page 29 and 30: Regime of steady precession (microw
Page 31 and 32: Application du transfert de spin: c
Page 33 and 34: Synchronization of STOsSynchronizat

(Microsoft PowerPoint - Acad\351mie_08.ppt [Lecture seule])

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?