Half-Metallic Single Crystal CrO 2 Films (JHU MRSEC)
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Half-Metallic Single Crystal CrO 2 Films (JHU MRSEC). Density of states. NM metal P = 0. FM metal 0 < P < 1. Half Metal P = 1. Spintronic effects & devices depend directly on spin polarization P. (e.g., Cu)(e.g., Co) the ultimate. high R. low R. high R. - PowerPoint PPT Presentation
Transcript of Half-Metallic Single Crystal CrO 2 Films (JHU MRSEC)
PowerPoint Presentation(JHU MRSEC)
(e.g., Cu) (e.g., Co) the ultimate
NM metal
P = 0
FM metal
Point Contact
Andreev Reflection
CrO2 (P = 98.4%) is half metallic !
*
*
*
Conducting Insulating
Physics of a single spin band
E
F
E
F
E
F
m=
2m
B
a
b
c
Cr
O
P
(e.g., Cu) (e.g., Co) the ultimate
NM metal
P = 0
FM metal
Point Contact
Andreev Reflection
CrO2 (P = 98.4%) is half metallic !
*
*
*
Conducting Insulating
Physics of a single spin band
E
F
E
F
E
F
m=
2m
B
a
b
c
Cr
O
P
