TY - JOUR
T1 - Dynamic order-to-metastable-disorder vortex matter transition in Bi2Sr2CaCu2O8+δ
AU - Kalisky, B.
AU - Myasoedov, Y.
AU - Shaulov, A.
AU - Tamegai, T.
AU - Zeldov, E.
AU - Yeshurun, Y.
N1 - Also in: Virtual Journal of Applications of Superconductivity
PY - 2007/3/6
Y1 - 2007/3/6
N2 - Magneto-optical measurements of transient vortex states in Bi2Sr2CaCu2O8+δ show enhanced effects of metastability in prism-shaped as compared to platelet crystals including a significant shift of the second magnetization peak and qualitatively different dynamics. In contrast to platelets, where dislocations are generated only at the sample edges, we propose that in prism samples the dislocations are generated dynamically in the entire sample due to distributed surface barriers. As a result, a dynamic phase transition from a Bragg glass to a metastable disordered phase may occur well below the thermodynamic transition field.
AB - Magneto-optical measurements of transient vortex states in Bi2Sr2CaCu2O8+δ show enhanced effects of metastability in prism-shaped as compared to platelet crystals including a significant shift of the second magnetization peak and qualitatively different dynamics. In contrast to platelets, where dislocations are generated only at the sample edges, we propose that in prism samples the dislocations are generated dynamically in the entire sample due to distributed surface barriers. As a result, a dynamic phase transition from a Bragg glass to a metastable disordered phase may occur well below the thermodynamic transition field.
UR - http://www.scopus.com/inward/record.url?scp=33847721855&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.98.107001
DO - 10.1103/PhysRevLett.98.107001
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SN - 0031-9007
VL - 98
JO - Physical Review Letters
JF - Physical Review Letters
IS - 10
M1 - 107001
ER -