نتایج جستجو برای: high temperature superconductor

تعداد نتایج: 2388762  

Journal: :Nature communications 2013
Yingying Peng Jianqiao Meng Daixiang Mou Junfeng He Lin Zhao Yue Wu Guodong Liu Xiaoli Dong Shaolong He Jun Zhang Xiaoyang Wang Qinjun Peng Zhimin Wang Shenjin Zhang Feng Yang Chuangtian Chen Zuyan Xu T K Lee X J Zhou

The parent compound of the copper-oxide high-temperature superconductors is a Mott insulator. Superconductivity is realized by doping an appropriate amount of charge carriers. How a Mott insulator transforms into a superconductor is crucial in understanding the unusual physical properties of high-temperature superconductors and the superconductivity mechanism. Here we report high-resolution ang...

2000
D. H. RISCHKE

We review what is different and what is similar in a color superconductor as compared to an ordinary BCS superconductor. The parametric dependence of the zero-temperature gap, φ0, on the coupling constant differs in QCD from that in BCS theory. On the other hand, the transition temperature to the superconducting phase, Tc, is related to the zero-temperature gap in the same way in QCD as in BCS ...

2009
Min Cheol Ahn Tsuyoshi Yagai Seungyong Hahn Ryuya Ando Juan Bascuñán Yukikazu Iwasa

This paper presents experimental and simulation results of a screening current induced magnetic field (SCF) in a high temperature superconductor (HTS) insert that constitutes a low-/high-temperature superconductor (LTS/HTS) NMR magnet. In this experiment, the HTS insert, a stack of 50 double-pancake coils, each wound with Bi2223 tape, was operated at 77 K. A screening current was induced in the...

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