Vortex nanoliquid

1
Title
Vortex nanoliquid in high-temperature
superconductors
2
BSCCO PD 5 phases
Vortex matter phase diagram in Bi2Sr2CaCu2O8
Point disorder
3
BSCCO PD 3 phases
Vortex matter phase diagram in Bi2Sr2CaCu2O8
Point disorder
Amorphous
Vortex liquid
B
quasi - ordered - lattice (Bragg glass)
T
4
Bose glass schematic
Bose glass phase with columnar defects
Vortices pinned by columnar defects
Nelson and Vinokur, PRL 68, 2398 (1992)
5
Bose glass
Bose glass phase with columnar defects
Radzihovsky, PRL 74, 4923 (1995)
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From BrG to BG
Bose glass phase with columnar defects
B
B
Vortex liquid
Vortex liquid
Amorphous
?
Bose glass
CDs
Bragg glass
T
T
Structure of vortex matter when just few CDs are
present?
7
DMO technique
Differential magneto-optical system

CCD camera
Microscope
Analyzer
Polarizer
lamp
Solenoid
He
Cryostat
8
Movie BSCCO3 large color
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Crystal with mask and CDs
Artificial disorder by heavy ion irradiation
SST mask
Columnar defects by 1 GeV Pb irradiation through
perforated mask
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Movie Satya Bf20G, B50G
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Upward shift of Bm pristine
Upward shift of the melting line with CDs
pristine melting
liquid
solid
12
Upward shift of Bm, B? 5G
Upward shift of the melting line with CDs
B?5 G
pristine
liquid
liquid
solid
solid
13
Upward shift of Bm, 10G
Upward shift of the melting line with CDs
5 G
10 G
pristine
liquid
solid
14
Upward shift of Bm, 20G
Upward shift of the melting line with CDs
5 G
10 G
pristine
liquid
20 G
solid
15
Upward shift of Bm, 50G all
Upward shift of the melting line with CDs
5 G
B?50 G
10 G
pristine
liquid
20 G
solid
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Vertical shift of Bm
Upward shift of the melting line with CDs
vertical shift in Bm
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Horizontal shift of Tm with CDs
Upward shift of the melting line with CDs
vertical shift in Bm
horizontal shift in Tm
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Crystal w mask and decoration
Magnetic decoration with CDs
SST mask
Columnar defects by 1 GeV Pb irradiation through
perforated mask
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Crystal with decoration
Magnetic decoration with CDs
porous
SST mask
Bragg glass
Columnar defects by 1 GeV Pb irradiation through
perforated mask
Magnetic decoration
B 40 G Bf 10 G
20
AFM mica and decoration
Magnetic decoration with CDs
porous
20 ?m
AFM of etched columnar defects in mica
Bragg glass
Bf 10 G
Magnetic decoration
B 40 G Bf 10 G
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Decoration B/Bf1
Magnetic decoration with CDs
B / Bf 1
Magnetic decoration BSCCO
20 ?m
Etched mica Bf 10 G
B 10 G Bf 10 G
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Decoration B/Bf4
Magnetic decoration with CDs
B / Bf 4
Magnetic decoration BSCCO
20 ?m
Etched mica Bf 10 G
B 40 G Bf 10 G
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Decoration B/Bf8
Magnetic decoration with CDs
B / Bf 8
Magnetic decoration BSCCO
20 ?m
Etched mica Bf 10 G
B 80 G Bf 10 G
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Size of crystallites
Magnetic decoration with CDs
number of vortices in the crystallites
20 ?m
Etched mica Bf 10 G
Bf 10 G
25
Density of lattice defects
Magnetic decoration with CDs
density of vortex lattice defects
porous
20 ?m
Etched mica Bf 10 G
Two distinct vortex populations soft
crystallites and rigid matrix
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Melting line porous
Melting of porous vortex matter
melting of crystallites
10 G
5 G
20 G
pristine
50 G
delocalization
skeleton melting
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Self-field with CDs small crystal
Imaging of transport current distribution in
irradiated BSCCO
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Self-field with CDs large crystal
Imaging of transport current distribution in
irradiated BSCCO
Bself
Jy
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Pristine melting
Vortex matter phase diagram in Bi2Sr2CaCu2O8 with
CDs
liquid


Bragg glass
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Porous melting
Vortex matter phase diagram in Bi2Sr2CaCu2O8 with
CDs
liquid ?
porous solid


B? 60 G
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Nanoliquid PD
Vortex matter phase diagram in Bi2Sr2CaCu2O8 with
CDs
nano- liquid
liquid
homogeneous
porous solid
Bdl ? exp(-T/T0 )


B? 60 G
Lopatin and Vinokur, PRL 92 (2004)
Kierfeld and Vinokur, PRL 94 (2005)
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R(T) nanoliquid
Transport data in Bi2Sr2CaCu2O8 with CDs
homogeneous liquid
nonoliquid
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Transport nanoliquid 1
Transport data in Bi2Sr2CaCu2O8 with CDs
Tdl
nonoliquid
homogeneous liquid
porous solid
B 125 G
B? 60 G
34
Transport nanoliquid 2
Transport data in Bi2Sr2CaCu2O8 with CDs
Tdl
nonoliquid
homogeneous liquid
porous solid
B 125 G
B? 60 G
35
Transport nanoliquid 2
Transport data in Bi2Sr2CaCu2O8 with CDs
Tdl
nonoliquid
homogeneous liquid
enhanced c-axis correlations
porous solid
B 125 G
B? 60 G
36
PD w CDs summary
Vortex matter phase diagram in Bi2Sr2CaCu2O8 with
CDs
Nanoliquid
Homogeneous liquid


Porous solid
B? 60 G