Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x
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2012
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In the present study, we have employed two dimensional ASYNNNI model to investigate how the Ortho-II structure formation influences doping, p, of the superconducting CuO2 planes in YBa2Cu3O6+x high-T-c superconductor. It was shown, that if the direct repulsive interaction between next nearest oxygen atoms (V-3), present in the Hamiltonian of the ASYNNNI model, is neglected, the Ortho-II ordering is destroyed and doping p becomes a linearly increasing function of oxygen concentration x in the range 0.50 LT = x LT = 0.65, for any choice of critical chain length l(cr) (defined so that CuO chains of length l LT l(cr) cannot transfer holes to the CuO2 planes). Consequently, the T-c(x) dependence, obtained by the employment of the universal T-c vs. p relation, does not exhibit experimentally observed 60 K plateau. The results presented here confirm that establishment of Ortho-II structural phase is a key factor for the 60 K plateau formation in the T-c(x) dependence. (C) 2012 Elsevier B. V. ...All rights reserved.
Кључне речи:
CuO chains / High-T-c superconductor / SuperconductivityИзвор:
Physica. C: Superconductivity and Its Applications, 2012, 476, 63-67Финансирање / пројекти:
DOI: 10.1016/j.physc.2012.02.008
ISSN: 0921-4534
WoS: 000302769900011
Scopus: 2-s2.0-84858735183
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Институција/група
VinčaTY - JOUR AU - Milić, Mirjana M. AU - Lazarov, Nenad Đ. AU - Karbunar, Lazar PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4798 AB - In the present study, we have employed two dimensional ASYNNNI model to investigate how the Ortho-II structure formation influences doping, p, of the superconducting CuO2 planes in YBa2Cu3O6+x high-T-c superconductor. It was shown, that if the direct repulsive interaction between next nearest oxygen atoms (V-3), present in the Hamiltonian of the ASYNNNI model, is neglected, the Ortho-II ordering is destroyed and doping p becomes a linearly increasing function of oxygen concentration x in the range 0.50 LT = x LT = 0.65, for any choice of critical chain length l(cr) (defined so that CuO chains of length l LT l(cr) cannot transfer holes to the CuO2 planes). Consequently, the T-c(x) dependence, obtained by the employment of the universal T-c vs. p relation, does not exhibit experimentally observed 60 K plateau. The results presented here confirm that establishment of Ortho-II structural phase is a key factor for the 60 K plateau formation in the T-c(x) dependence. (C) 2012 Elsevier B. V. All rights reserved. T2 - Physica. C: Superconductivity and Its Applications T1 - Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x VL - 476 SP - 63 EP - 67 DO - 10.1016/j.physc.2012.02.008 ER -
@article{ author = "Milić, Mirjana M. and Lazarov, Nenad Đ. and Karbunar, Lazar", year = "2012", abstract = "In the present study, we have employed two dimensional ASYNNNI model to investigate how the Ortho-II structure formation influences doping, p, of the superconducting CuO2 planes in YBa2Cu3O6+x high-T-c superconductor. It was shown, that if the direct repulsive interaction between next nearest oxygen atoms (V-3), present in the Hamiltonian of the ASYNNNI model, is neglected, the Ortho-II ordering is destroyed and doping p becomes a linearly increasing function of oxygen concentration x in the range 0.50 LT = x LT = 0.65, for any choice of critical chain length l(cr) (defined so that CuO chains of length l LT l(cr) cannot transfer holes to the CuO2 planes). Consequently, the T-c(x) dependence, obtained by the employment of the universal T-c vs. p relation, does not exhibit experimentally observed 60 K plateau. The results presented here confirm that establishment of Ortho-II structural phase is a key factor for the 60 K plateau formation in the T-c(x) dependence. (C) 2012 Elsevier B. V. All rights reserved.", journal = "Physica. C: Superconductivity and Its Applications", title = "Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x", volume = "476", pages = "63-67", doi = "10.1016/j.physc.2012.02.008" }
Milić, M. M., Lazarov, N. Đ.,& Karbunar, L.. (2012). Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x. in Physica. C: Superconductivity and Its Applications, 476, 63-67. https://doi.org/10.1016/j.physc.2012.02.008
Milić MM, Lazarov NĐ, Karbunar L. Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x. in Physica. C: Superconductivity and Its Applications. 2012;476:63-67. doi:10.1016/j.physc.2012.02.008 .
Milić, Mirjana M., Lazarov, Nenad Đ., Karbunar, Lazar, "Influence of Ortho-II structural phase on the 60 K plateau formation in YBa2Cu3O6+x" in Physica. C: Superconductivity and Its Applications, 476 (2012):63-67, https://doi.org/10.1016/j.physc.2012.02.008 . .