کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1820190 1525768 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Intrinsic Josephson junction behaviour of the low Tc superconductor (LaSe)1.14(NbSe2)
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Intrinsic Josephson junction behaviour of the low Tc superconductor (LaSe)1.14(NbSe2)
چکیده انگلیسی

Interlayer magnetotransport measurements on the highly anisotropic (LaSe)1.14(NbSe2) superconductor with Tc ∼ 1.2 K have indicated that this layered compound represents a model system of intrinsic Josephson junctions [P. Szabó et al., Phys. Rev. Lett. 86 (2001) 5990]. Scanning tunneling microscopy at room temperature and tunneling spectroscopy measurements at very low temperatures are presented in this work. STM imaging has revealed the presence of two types of surfaces which can be attributed to the appearance of LaSe or NbSe2 layers on the surface. The use of STM tip made of superconducting lead enabled a precise measurement of the temperature dependence of the superconducting energy gap Δ(T) on the NbSe2 layer. Δ(T) obtained from the surface sensitive STS data support the scenario obtained from our previous interlayer – ergo bulk sensitive magnetotransport measurements.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volume 468, Issues 7–10, 1 April 2008, Pages 543–546
نویسندگان
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