TY - JOUR
T1 - Disorder and thermally driven vortex-lattice melting in (formula presented) crystals
AU - Radzyner, Y.
AU - Shaulov, A.
AU - Yeshurun, Y.
AU - Felner, I.
AU - Kishio, K.
AU - Shimoyama, J.
PY - 2002
Y1 - 2002
N2 - Magnetization measurements in (formula presented) crystals indicate vortex order-disorder transition manifested by a sharp kink in the second magnetization peak. The transition field exhibits unique temperature dependence, namely a strong decrease with temperature in the entire measured range. This behavior rules out the conventional interpretation of a disorder-driven transition into an entangled vortex solid phase. It is shown that the transition in (formula presented) is driven by both thermally- and disorder-induced fluctuations, resulting in a pinned liquid state. We conclude that vortex solid-liquid, solid-solid and solid to pinned-liquid transitions are different manifestations of the same thermodynamic order-disorder transition, distinguished by the relative contributions of thermal and disorder-induced fluctuations.
AB - Magnetization measurements in (formula presented) crystals indicate vortex order-disorder transition manifested by a sharp kink in the second magnetization peak. The transition field exhibits unique temperature dependence, namely a strong decrease with temperature in the entire measured range. This behavior rules out the conventional interpretation of a disorder-driven transition into an entangled vortex solid phase. It is shown that the transition in (formula presented) is driven by both thermally- and disorder-induced fluctuations, resulting in a pinned liquid state. We conclude that vortex solid-liquid, solid-solid and solid to pinned-liquid transitions are different manifestations of the same thermodynamic order-disorder transition, distinguished by the relative contributions of thermal and disorder-induced fluctuations.
UR - http://www.scopus.com/inward/record.url?scp=85038298096&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.65.100503
DO - 10.1103/PhysRevB.65.100503
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AN - SCOPUS:85038298096
SN - 1098-0121
VL - 65
SP - 1
EP - 4
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 10
ER -