کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1817386 1525690 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Puzzling evidence for surface superconductivity in the layered dichalcogenide Cu10%10%TiSe2
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Puzzling evidence for surface superconductivity in the layered dichalcogenide Cu10%10%TiSe2
چکیده انگلیسی


• Combined specific heat and magnetotransport demonstrate surface superconductivity.
• Surprisingly, surface effects occur for all magnetic field orientations.
• Temperature dependence suggests a surface layer with depressed critical temperature.

We report on specific heat and magnetotransport measurements performed on superconducting Cu10%10%TiSe2 single crystals. We show that superconductivity persists in transport measurements up to magnetic fields HR well above the upper critical field Hc2 deduced from the calorimetric measurements. Surprisingly this “surface” superconductivity is present for all magnetic field orientations, either parallel or perpendicular to the layers. For H‖ab, the temperature dependence of the HR/Hc2 ratio can be well reproduced by solving the Ginzburg–Landau equations in presence of a surface layer with reduced superconducting properties. Unexpectedly this temperature dependence does not depend on the field orientation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volume 523, 15 April 2016, Pages 19–22
نویسندگان
, , , , , , ,