Magnetic field penetration in MgB₂ single crystals: pinning and Meissner holes

• Опубліковано в: Физика низких температур
• Дата: 2014
• ISSN: 0132-6414
• Автори: Chabanenko, V., Kuchuk, Е., Yurchenko, V.V., Mikheenko, P., Abal’osheva, I., Cortés-Maldonado, R., Pérez-Rodríguez, F., Karpinski, J., Zhigadlo, N.D., Katrych, S., Puźniak, R.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2014
• Теми: Свеpхпpоводимость, в том числе высокотемпеpатуpная
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/119540
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Magnetic field penetration in MgB₂ single crystals: pinning and Meissner holes / V. Chabanenko, E. Kuchuk, V.V. Yurchenko, P. Mikheenko, I. Abal’osheva, R. Cortés-Maldonado, F. Pérez-Rodríguez, J. Karpinski, N.D. Zhigadlo, S. Katrych, R. Puźniak // Физика низких температур. — 2014. — Т. 40, № 7. — С. 801-806. — Бібліогр.: 12 назв. — англ.

The evolution of flux distribution in MgB₂ single crystals during their remagnetization was imaged with
 magneto-optical technique. Meissner holes, formed as the areas where the annihilation of vortices and
 antivortices takes place, were found at the boundary between oppositely magnetized parts of the crystal. Gradient
 of magnetic induction in the vicinity of Meissner holes was found to be enhanced. Finger-like structures of
 convex shape, formed during the penetration of magnetic flux inside the crystal, were observed and explained as
 an effect of inhomogeneous pinning and demagnetizing field redistribution in the sample.