1/3/2004
H || c
H
z
c
COHERENCE LENGTH
x
~7.7nm
~2.3nm
L
LONDON
PENETRATION DEPTH
l
~100nm
~230nm
CRITICAL FIELD
H
c2
(T=0)
~5 T
~22T
RELATIVE STRENGTH OF FLUCTUATIONS
Gi= (k
B
T
c
/H
c
2
ex
3
)
2
/2
10
-4
10
-2
10
-8
Qu=(e
2
/h)(
r
n
/ex
)
10
-3
10
-1
10
-3
ORDER PARAMETER
J
c
/J
o
10
-6
J
10
-2
L
10
-1
L
T
HERMAL
Q
UANTUM
Se
Nb
63nm
20nm
C
NbSe
2
NbSe
2
LTC
HTC