Datta and Das, APL 56 665 1990

1
SpinFET
Datta and Das, APL 56 665 (1990)
L
HEMT
2
Schmidt et al, PRB 62 R4790 (2000)
Semiconductor Spin Polarization
Ferromagnet Spin Polarization
Ferromagnet Spin Polarization
3
Hanbicki et al. APL 80 1240 (2002)
Tunnel injection
Faraday (PL)
p
n
4.5K
4
Time-Resolved Faraday Rotation
Kikkawa et al, Science, 277 1284 (1997) ZnSe
Kikkawa et al, PRL 80 4313 GaAs
5
Resonant Spin Amplification
Kikkawa et al, PRL 80 4313

• Spacing measures g
• Peak width measures T2

6
Coherent Transfer of Spin across a Heterointerface
Malajovich, Kikkawa et al, PRL 84 1015 (2000)
rise
Probe _at_ ZnSe band-edge
Spins are from GaAs
7
II-VI Spin LED
dSM300nm
Fielderling, et al, Nature 402 787 (1999)
dSM3nm
8
III-V Spin LED
Ohno, et al, Nature 402 790 (1999)
9
III-V Magnetic Semiconductor Ga1-xMnxAs
semiconducting
Matsukura, PRB 57 R2037 (1998)
X0.053
metal
metallic
10
Semiconductor Magnetic Tunnel Junctions
Tanaka and Higo PRL 87 26602 (2001)
11
Electrostatic Control of Ferromagnetism in
In1-xMnxAs