Structural investigations of superconducting multilayers consisting of semiconducting materials

• Published in: Физика низких температур
• Date: 2001
• Main Authors: Erenburg, A.I., Fogel, N.Ya., Bomze, Yu.V., Sipatov, A.Yu., Fedorenko, A.I., Langer, V., Norell, M.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2001
• Subjects: Свеpхпpоводимость, в том числе высокотемпеpатуpная
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/129847
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Structural investigations of superconducting multilayers consisting of semiconducting materials / A.I. Erenburg, N.Ya. Fogel, Yu.V. Bomze, A.Yu. Sipatov, A.I. Fedorenko, V. Langer , M. Norell // Физика низких температур. — 2001. — Т. 27, № 2. — С. 127-130. — Бібліогр.: 5 назв. — англ.

There are rather exotic semiconducting superlattices (SL) consisting of monochalcogenides of Pb, Sn and rare-earth metals which exhibit superconductivity at temperature as high as 6 K. Here we report the results of precision x-ray diffractometry and TEM investigations as well as Auger spectroscopy data obtained on some of the epitaxially grown superconducting semiconducting SLs. It is established that essential features of the SL structure determining the appearance of superconductivity are the perfect single-crystallinity of the samples and the presence of continuous dense grids of misfit dislocations on the interfaces between two semiconductors. The segregation of free Pb which was observed in some cases does not correlate, according to experimental data, with the appearance of superconductivity.