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Variation of vortex-glass dynamics and critical region with oxygen content in Bi2Sr2CaCu2O8+δ single crystal
Darminto D.a,b, Tjia M.O.a, Nugroho A.A.a, Menovsky A.A., Shimoyama J.d, Kishio K.d
a Department of Physics, Bandung Institute of Technology, Indonesia
b Department of Physics, Sepuluh Nopember Institute of Technology, Indonesia
c Van der Waals-Zeeman Institute, University of Amsterdam, Netherlands
d Department of Superconductivity, University of Tokyo, Japan
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]A systematic analysis of disorder and anisotropy effects has been performed on the transport data of three oxygen doped Bi2Sr2CaCu2O8+δ (BSCCO-2212) single crystals obtained in external magnetic field aligned with the crystal c-axis, ranging from 100 Oe to 40 kOe. The result confirms the existence of finite critical region in all cases and ostensible crossover behavior associated with 3-D vortex-glass transition. The maximum widths of the regions ([T* – Tg]/Tg = 0.66, 0.53 and 0.38) as well as the critical exponents (s = 5.3 ± 1.3, 3.8 ± 0.7 and 2.8 ± 0.6) are shown to decrease consistently with lower anisotropy (γ2 = 19,500, 8300 and 3000) corresponding to samples with increasing doping. While being responsible for the suppression of first-order melting, the effect of stronger disorder also contributes to larger temperature and field ranges of the critical region. © 2001 Elsevier Science B.V.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]First-order melting,Vortex-glass transitions[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]BSCCO-2212,Critical region and exponent,Disorder and anisotropy,Vortex-glass[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]Travel support from QUE project of the Physics Department, ITB, is gratefully acknowledged by MOT.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/S0921-4534(01)00349-5[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]