Reduced anti-ferromagnetism promoted by Zn 3d10 substitution at CuO2 planar sites of Cu0.5Tl0.5Ba2Ca3Cu4O12−δ superconductors
作者： M. Mumtaz , Nawazish A. Khan
DOI: 10.1016/J.PHYSB.2009.07.133
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摘要: Abstract The role of charge carriers in ZnO2/CuO2 planes Cu0.5Tl0.5Ba2Ca3Cu4−yZnyO12−δ material bringing about superconductivity has been explained. Due to suppression anti-ferromagnetic order with Zn 3d10 (S=0) substitution at Cu 3d9 ( S = 1 2 ) sites the inner CuO2 Cu0.5Tl0.5Ba2Ca3Cu4O12−δ superconductor, distribution becomes homogeneous and optimum, which is evident from enhanced parameters. decreased c-axis length increase doping improves interlayer coupling hence three dimensional (3D) conductivity unit cell enhanced. Also softening phonon modes increased indicates that electron–phonon interaction an essential mechanism high-Tc these compounds.
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sci-hub.se 参考文章(42)
Gang Xiao, A. Bakhshai, Marta Z. Cieplak, Z. Tesanovic, C. L. Chien, Correlation between superconductivity and normal-state properties in theLa1.85Sr0.15(Cu1−xZnx)O4system Physical Review B. ,vol. 39, pp. 315- 321 ,(1989) , 10.1103/PHYSREVB.39.315
Y. Tokunaga, H. Kotegawa, K. Ishida, G. -q. Zheng, Y. Kitaoka, K. Tokiwa, A. Iyo, H. Ihara, Carrier distribution and superconductivity in multilayer high-Tc cuprates proved by 63Cu NMR Journal of Low Temperature Physics. ,vol. 117, pp. 473- 477 ,(1999) , 10.1023/A:1022506725017
Ko-ichi Magishi, Yoshio Kitaoka, Guo-qing Zheng, Kunisuke Asayama, Kazuyasu Tokiwa, Akira Iyo, Hideo Ihara, Spin Correlation in High-Tc Cuprate HgBa2Ca2Cu3O8+δ with Tc=133 K—An Origin of Tc-Enhancement Evidenced by 63Cu-NMR Study Journal of the Physical Society of Japan. ,vol. 64, pp. 4561- 4565 ,(1995) , 10.1143/JPSJ.64.4561
M. Mumtaz, Nawazish A. Khan, Improved interplane and intergranular coupling by Mg doping at Ca site in Cu0.5Tl0.5Ba2Ca2(Cu0.5Zn2.5)O10−δ superconductor Journal of Applied Physics. ,vol. 103, pp. 083913- ,(2008) , 10.1063/1.2908080
Leslie E. Orgel, An Introduction to Transition-Metal Chemistry: Ligand-Field Theory ,(1960)
Nawazish A. Khan, M. Mumtaz, A. A. Khurram, Frequency dependent dielectric properties of Cu0.5Tl0.5Ba2Ca2Cu3−yZnyO10−δ (y=0, 1.0, 1.5,2.0, 2.5) superconductors Journal of Applied Physics. ,vol. 104, pp. 033916- ,(2008) , 10.1063/1.2967823
M.-H. Julien, P. Carretta, M. Horvatić, C. Berthier, Y. Berthier, P. Ségransan, A. Carrington, D. Colson, Spin Gap in HgBa 2 Ca 2 Cu 3 O 8+δ Single Crystals from 63 Cu NMR Physical Review Letters. ,vol. 76, pp. 4238- 4241 ,(1996) , 10.1103/PHYSREVLETT.76.4238
Y. Tokunaga, K. Ishida, Y. Kitaoka, K. Asayama, K. Tokiwa, A. Iyo, H. Ihara, Effect of carrier distribution on superconducting characteristics of the multilayered high- T c cuprate ( Cu 0.6 C 0.4 ) Ba 2 Ca 3 Cu 4 O 1 2 + y : 63 Cu − NMR study Physical Review B. ,vol. 61, pp. 9707- 9710 ,(2000) , 10.1103/PHYSREVB.61.9707
T. K. Park, B. J. Mean, K. H. Lee, G. S. Go, S. W. Seo, K. S. Han, Moohee Lee, H. S. Lee, H. B. Kim, W. C. Lee, Relaxation mechanisms for 63,65 Cu nuclear quadrupole resonance in Zn-doped YBa 2 Cu 3 O 7 Physical Review B. ,vol. 59, pp. 11217- 11220 ,(1999) , 10.1103/PHYSREVB.59.11217
M Mumtaz, Nawazish A Khan, Intergranular coupling of the Cu0.5Tl0.5Ba2Ca2Cu0.5Zn2.5O10−δ superconductor Superconductor Science and Technology. ,vol. 20, pp. 1228- 1232 ,(2007) , 10.1088/0953-2048/20/12/024