Antidot array

Stable flux configuration

Higher critical parameters jc, Hc

Science 274 ,1167 (1996)Lorentz microscopy of fluxons

10 x 10 m2

Local field above surface

Au (200 – 500Å)Ge (~200Å)

Vortex lattice in Pb antidot film (SHPM)

Pb (500Å), period 1.5 m

SC sample + substrate

SHPMT = 5.5K < Tc

FC first matching field H1

H1 = 0/(1.5

m)2

Square vortex lattice

0.2 µm

0

2

4

0

3

1

0

2

4

µm

3

1