Surface superconductivity, positive field cooled magnetization, and peak-effect phenomenon observed in a spherical single crystal of niobium
作者： Pradip Das , C. V. Tomy , S. S. Banerjee , H. Takeya , S. Ramakrishnan
DOI: 10.1103/PHYSREVB.78.214504
关键词: Single crystal 、 Superconductivity 、 Materials science 、 Niobium 、 Superconducting coherence length 、 Phase (matter) 、 Condensed matter physics 、 Field (physics) 、 Magnetization 、 High-temperature superconductivity
摘要: We report the observation of surface superconductivity as well positive field cooled magnetization, along with peak-effect phenomenon in ac and dc magnetization measurements a high-purity spherical single crystal niobium. study how evolve over $(H)$ temperature $(T)$ phase space. suggest that observed evolution strength signal may be understood on basis dependence superconducting coherence length.
sci-hub.se 参考文章(48)
Chia-Ren Hu, Victor Korenman, Critical-Field Ratio H c 3 H c 2 for Pure Superconductors outside the Ginzburg-Landau Region. II. T ≃ T c Physical Review. ,vol. 185, pp. 672- 682 ,(1969) , 10.1103/PHYSREV.185.672
EL Papadopoulou, EL (Papadopoulou, P Nordblad, P Svedlindh, R Schoneberger, R Gross, Magnetic Aging in Bi 2 Sr 2 CaCu 2 O 8 Displaying the Paramagnetic Meissner Effect Physical Review Letters. ,vol. 82, pp. 173- 176 ,(1999) , 10.1103/PHYSREVLETT.82.173
S. Riedling, G. Bräuchle, R. Lucht, K. Röhberg, H. v. Löhneysen, H. Claus, A. Erb, G. Müller-Vogt, Observation of the Wohlleben effect inYBa2Cu3O7−δsingle crystals Physical Review B. ,vol. 49, pp. 13283- 13286 ,(1994) , 10.1103/PHYSREVB.49.13283
A. K. Geim, S. V. Dubonos, J. G. S. Lok, M. Henini, J. C. Maan, Paramagnetic Meissner effect in small superconductors Nature. ,vol. 396, pp. 144- 146 ,(1998) , 10.1038/24110
A. E. Koshelev, A. I. Larkin, PARAMAGNETIC MOMENT IN FIELD-COOLED SUPERCONDUCTING PLATES: PARAMAGNETIC MEISSNER EFFECT Physical Review B. ,vol. 52, pp. 13559- 13562 ,(1995) , 10.1103/PHYSREVB.52.13559
D. K. Christen, H. R. Kerchner, S. T. Sekula, P. Thorel, Equilibrium properties of the fluxoid lattice in single-crystal niobium. II. Small-angle neutron-diffraction measurements Physical Review B. ,vol. 21, pp. 102- 117 ,(1980) , 10.1103/PHYSREVB.21.102
J. R. Hopkins, D. K. Finnemore, Surface superconductivity in niobium and niobium-tantalum alloys Physical Review B. ,vol. 9, pp. 108- 114 ,(1974) , 10.1103/PHYSREVB.9.108
D. K. Finnemore, T. F. Stromberg, C. A. Swenson, Superconducting Properties of High-Purity Niobium Physical Review. ,vol. 149, pp. 231- 243 ,(1966) , 10.1103/PHYSREV.149.231
V. V. Moshchalkov, X. G. Qiu, V. Bruyndoncx, Paramagnetic Meissner effect from the self-consistent solution of the Ginzburg-Landau equations Physical Review B. ,vol. 55, pp. 11793- 11801 ,(1997) , 10.1103/PHYSREVB.55.11793
X. S. Ling, S. R. Park, B. A. McClain, S. M. Choi, D. C. Dender, J. W. Lynn, Comment on "Superheating and supercooling of vortex matter in a Nb single crystal: direct evidence for a phase transition at the peak effect from neutron diffraction". Physical Review Letters. ,vol. 89, pp. 712- 715 ,(2001) , 10.1103/PHYSREVLETT.86.712