Vortex dynamics in heavy-ion-irradiated single crystals ofBi2Sr2CaCu2O8+δandBi1.8Pb0.2Sr2CaCu2O8+δ: Comparison from transport measurements

2004 ◽  
Vol 70 (22) ◽  
Author(s):  
L. Ammor ◽  
N. H. Hong ◽  
B. Pignon ◽  
A. Ruyter
Keyword(s):  
Single Crystals ◽  
Vortex Dynamics ◽  
Heavy Ion ◽  
Transport Measurements

Critical Scaling of LöW Frequency Ac Resistivity in Superconducting Y-Ba-Cu-O Single Crystals

1992 ◽  
Vol 275 ◽  
Author(s):  
D. S. Reed ◽  
N. -C. Yeh ◽  
W. Jiang ◽  
U. Kriplanp ◽  
F. Holtzberg
Keyword(s):  
Magnetic Fields ◽  
Single Crystal ◽  
Single Crystals ◽  
Vortex Dynamics ◽  
Strong Evidence ◽  
Critical Exponents ◽  
Low Frequency ◽  
Melting Transition ◽  
Universal Functions ◽  
Transport Measurements

ABSTRACTAC transport measurements show that the vortex dynamics in a twinned superconducting Y-Ba-Cu-O single crystal are consistant with a second order vortex-solid melting transition. Indentification of the universal functions and consistent measurements of the critical exponents v = 0.7 and z= 3.0 found in magnetic fields from IkOe to 90kOe as well as DC transport measurements offer strong evidence for this transition.

Study of heavy-ion induced modifications in BaF2 and LaF3 single crystals

2004 ◽  
Vol 218 ◽  
pp. 492-497 ◽  
Author(s):  
A.S. El-Said ◽  
M. Cranney ◽  
N. Ishikawa ◽  
A. Iwase ◽  
R. Neumann ◽  
...  
Keyword(s):  
Single Crystals ◽  
Heavy Ion

Vortex phase diagram in heavy ion irradiated untwinned YBa2Cu3Oy single crystals

2007 ◽  
Vol 460-462 ◽  
pp. 1204-1205 ◽  
Author(s):  
Norio Kobayashi ◽  
Terukazu Nishizaki ◽  
Kuniaki Kasuga ◽  
Satoru Okayasu
Keyword(s):  
Phase Diagram ◽  
Single Crystals ◽  
Heavy Ion ◽  
Vortex Phase Diagram ◽  
Vortex Phase

Vortex dynamics of heavy-ion-irradiatedYBa2Cu3O7−δ: Experimental evidence for a reduced vortex mobility at the matching field

1998 ◽  
Vol 58 (14) ◽  
pp. R8909-R8912 ◽  
Author(s):  
A. Mazilu ◽  
H. Safar ◽  
M. P. Maley ◽  
J. Y. Coulter ◽  
L. N. Bulaevskii ◽  
...  
Keyword(s):  
Experimental Evidence ◽  
Vortex Dynamics ◽  
Heavy Ion ◽  
Matching Field

Effect of Heavy Ion Irradiation on Flux Pinning Properties of Bi2212 and Bi(Pb)2212 Single Crystals Having Various γ 2

1999 ◽  
pp. 465-468 ◽  
Author(s):  
Jun-ichi Shimoyama ◽  
Yuri Nakayama ◽  
Teruki Motohashi ◽  
Kenji Otzschi ◽  
Noriko Chikumoto ◽  
...  
Keyword(s):  
Single Crystals ◽  
Flux Pinning ◽  
Ion Irradiation ◽  
Heavy Ion ◽  
Heavy Ion Irradiation ◽  
Pinning Properties

Transition from elastic to plastic vortex dynamics in YBa2Cu3O7−δ single crystals: the effect of columnar defects

2000 ◽  
Vol 341-348 ◽  
pp. 1041-1042
Author(s):  
S. Kokkaliaris ◽  
A.A. Zhukov ◽  
P.A.J. de Groot ◽  
R. Gagnon ◽  
L. Taillefer ◽  
...  
Keyword(s):  
Single Crystals ◽  
Vortex Dynamics ◽  
Columnar Defects

Peak effect at microwave frequencies in swift heavy ion irradiated YBa2Cu3O7-δthin films - investigation of vortex dynamics

2001 ◽  
Vol 689 ◽  
Author(s):  
Tamalika Banerjee ◽  
A. R. Bhangale ◽  
P. Raychaudhuri ◽  
D. Kanjilal ◽  
R. Pinto
Keyword(s):  
Vortex Dynamics ◽  
Surface Resistance ◽  
Flux Line ◽  
Heavy Ion ◽  
Peak Effect ◽  
Microwave Surface Resistance ◽  
Line Lattice ◽  
Microwave Frequencies ◽  
Columnar Defects ◽  
Pronounced Peak

ABSTRACTThe vortex dynamics at microwave frequencies in YBa2Cu3O7-δ(YBCO) films has been studied. We observe a peak in the microwave surface resistance Rs vs. T (temperature) plots at 4.88 GHz in some films in magnetic fields (upto 0.8 T) whereas a few films do not show a pronounced peak in their surface resistance. This is associated with the ‘peak-effect’ phenomenon and reflects the order-disorder transformation of the flux-line lattice near the transition temperature. Introduction of artificial pinning centers like columnar defects as a result of irradiation with 200 MeV Ag ion leads to the suppression of the peak in films exhibiting the ‘peak-effect’. Interestingly, a peak is seen to develop in those films that initially did not show a peak in the surface resistance before irradiation. These results and the dynamics of the vortices at microwave frequencies for the unirradiated and irradiated films will be discussed.

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