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Fishtail effect and the superconducting phase diagram of La1.6-xNd0.4SrxCuO4 single crystal
Sutjahja I.M.b, Diantoro M.b,c, Darminto D.d, Nugroho A.A.b, Tjia M.O.b, Menovsky A.A., Franse J.J.M.
a Van der Waals-Zeeman Instituut, Universiteit Van Amsterdam, Netherlands
b Department of Physics, Institut Teknologi Bandung, Indonesia
c Department of Physics, University of Malang, Indonesia
d Department of Physics, Institut Teknologi Sepuluh Nopember, Indonesia
[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]Measurements of isothermal magnetic hysteresis loop in c-aligned external field have been performed on superconducting La1.6-xNd0.4SrxCuO4 (x = 0.10, 0.20) single crystals, resulting in the H-T phase diagrams for the respective samples. The isothermal magnetization data of Sr-0.10 reveal the existence of fishtail effect in the certain temperature range of measurement (2.5 ≤ T ≤ 5.5 K), terminated at temperature well below the superconducting critical transition temperature (Tcon ≈ 8 K). Analysis of the irreversibility line shows a sign reversal of its slope at around the crossover field, H2D, indicating 2D melting at higher field. On the other hand, a single Hirr(T) function of 3D character was found to fit the irreversibility data for the Sr-0.20 sample, indicating the lack of vortex line decoupling effect in the same range. These remarkably different behaviors are suggested to have their origin in the different degrees of anisotropy (γ ≈ 96 for Sr-0.10 vs. γ ≈ 25 for Sr-0.20) as a consequence of different levels of Sr doping. © 2002 Elsevier Science B.V. All rights reserved.[/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]Fishtail effect[/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]Fishtail effect,La1.6-xNd0.4SrxCuO4 single crystal,Magnetization,Phase diagram[/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]One of us (IMS) would like to acknowledge fruitful discussions with S. Ramakrishnan and Jan Aarts. This work was carried out under the cooperation between Van der Waals–Zeeman Institute (FOM-ALMOS) and the Department of Physics, ITB, supported by KNAW under project no. 95-BTM-33.[/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(02)01492-2[/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]