НАМАГНИЧЕННОСТЬ СЛОИСТОГО АНИЗОТРОПНОГО СВЕРХПРОВОДНИКА В НАКЛОННОМ МАГНИТНОМ ПОЛЕ

Получены первые результаты по расчету намагниченности слоистого анизотропного сверхпроводника (ВТСП) с центрами пиннинга в наклонном магнитном поле. Расчеты выполнены методом Монте-Карло для вихревой системы. Показано, что ширина петли перемагничивания убывает с увеличением угла между внешним полем и осью анизотропии. Также показано, что кривая намагниченности сверхпроводника идет выше при большем наклоне магнитного поля (увеличивается второе критическое поле).

1. Mukherjee I., Mandal P., Ghosh A.K. Effect of insulating dense pinning centers on pinning potential and transport critical current density of YBCO superconductors // Phys. C (Amsterdam, Neth.). 2024. V. 616. P. 1354410.

2. Zoveydavi S., Hosseini M., Owjifard Z., Moftakharzadeh A. Investigation of the effect of conformal pinning array on critical current density in infinitely long superconductors // Phys. C (Amsterdam, Neth.). 2024. V. 620. P. 1354498.

3. Shadkamfar A., Hosseini M., Moftakharzadeh A. Effect of column-ordered pinning centers on the critical current density of superconducting tape // Phys. C (Amsterdam, Neth.). 2023. V. 606. P. 1354225.

4. Algarni R., Almessiere M., Slimani Y., Hannachi E., Azzouz F.B. Enhanced critical current density and flux pinning traits with Dy2O3 nanoparticles added to YBa2- Cu3O7–δ superconductor // J. Alloys Compd. 2021. V. 852. P. 157019.

5. Chakrabortty S., Mohapatra N. Influence of nonmagnetic impurities on the upper critical field, critical current density, and vortex pinning mechanism of the noncentrosymmetric superconductor NbReSi // Phys. Rev. B. 2025. V. 111 (9). P. 094511.

6. Guryev V., Shavkin S., Kruglov V. Method for critical current angular dependencies analysis of superconducting tapes // J. Phys.: Conf. Ser. 2021. V. 2103 (1). P. 012096.

7. Sueyoshi T. Modification of critical current density anisotropy in high-Tc superconductors by using heavyion irradiations // Quantum Beam Sci. 2021. V. 5 (2). P. 16.

8. Zhou B., Zhang Z., Liu Q., Zhang X., Strickland N., Suo H., Wang L., Liu J., Wang Q. Anisotropic in-plane field angle dependence of critical current in commercial REBCO tapes and its impact on toroidal field magnet for compact tokamak fusion device // Supercond. Sci. Technol. 2024. V. 38 (1). P. 015016.

9. Sueyoshi T., Enokihata R., Yamaguchi H., Fujiyoshi T., Okuno Y., Ishikawa N. Summation of flux pinning by columnar defects tilted at different angles in YBCO thin films // IEEE Trans. Appl. Supercond. 2021. V. 31 (5). P. 8000305.

10. Horide T., Ichino Y., Matsumoto K. Angular vortex phase diagram in YBa2Cu3O7 films with c-axis correlated pinning centers // Supercond. Sci. Technol. 2021. V. 34 (8). P. 085015.

11. Petukhova O., Klepikova A., Popov M., Shelushinina N., Ivanov A., Charikova T. Vortex motion in tilted magnetic fields in highly layered electron-doped superconductor Nd2–xCexCuO4 // Phys. C (Amsterdam, Neth.). 2021. V. 591. P. 1353968.

12. Lawrence W., Doniach S. Proc. 12th Int. Conf. Low Temperature Physics. Kyoto, Japan, 1970. Kanda E. (Ed.). 1971. Tokyo: Keigaku. P. 361.

13. Kashurnikov V.A., Maksimova A.N., Moroz A.N., Rudnev I.A. A high-temperature superconductor under applied strain: vortex dynamics and critical current density // Supercond. Sci. Technol. 2018. V. 31 (11). P. 115003.

14. Kashurnikov V., Maksimova A., Rudnev I., Odintsov D. Critical current density in anisotropic superconductors containing columnar defects // J. Phys.: Conf. Ser., 2019. V. 1238 (1). P. 012016.

15. Kashurnikov V.A., Maksimova A.N., Rudnev I., Odintsov D.S. Magnetization and transport characteristics of layered hightemperature superconductors with different anisotropy parameters // Phys. Solid State. 2016. V. 58. P. 1505.

16. Blatter G., Feigel’man M.V., Geshkenbein V.B., Larkin A.I., Vinokur V.M. Vortices in high-temperature superconductors // Rev. Mod. Phys. 1994. V. 66 (4).P. 1125.

17. Paturi P., Malmivirta M., Hynninen T., Huhtinen H. Angle dependent molecular dynamics simulation of flux pinning in YBCO superconductors with artificial pinning sites // J. Phys.: Condens. Matter. 2018. V. 30 (31). P. 315902.

18. Kato M. Three-dimensional molecular dynamics method for vortex pinning by splayed columnar defects // J. Phys.: Conf. Ser. 2022. V. 2323 (1). P. 012014.

19. Clem J.R. Two-dimensional vortices in a stack of thin superconducting films: a model for high-temperature superconducting multilayers // Phys. Rev. B. 1991. V. 43 (10). P. 7837.

20. Clem J.R., Coffey M.W., Hao Z. Lower critical field of a Josephson-coupled layer model of high-Tc superconductors // Phys. Rev. B. 1991. V. 44 (6). P. 2732.