کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9841748 | 1525795 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pseudogap in a superconducting n-type cuprate: An intrinsic interlayer transport study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Interlayer transport in magnetic fields for a superconducting n-type cuprate Sm2âxCexCuO4âδ is investigated. Bulk single crystals and small 30 nm-high mesa structures, sufficiently thin to be free of recently reported partial epitaxial decomposition problems, are prepared to measure the c-axis resistivity Ïc. In the normal state for both the mesas and the bulk crystals, it is found that the intrinsic longitudinal magnetoresistance (MR) is comprised of fundamental positive MR term in proportion to the square of field strength and negative MR term, which is a characteristic behavior of the pseudogap state reported in p-type cuprates. We find that the negative MR term manifests itself below T* = 38(±2) K. At low temperatures it remains finite below 28(±2) T. These characteristic temperature and field obey the Zeeman energy relationship found in the pseudogap state of Bi2Sr2CaCu2O8+δ, strongly suggesting the existence of a pseudogap similar to that of p-type cuprates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volumes 426â431, Part 1, 1 October 2005, Pages 369-373
Journal: Physica C: Superconductivity - Volumes 426â431, Part 1, 1 October 2005, Pages 369-373
نویسندگان
Tsuyoshi Kawakami, Takasada Shibauchi, Yuhki Terao, Minoru Suzuki, Lia Krusin-Elbaum,