Zobrazeno 1 - 10
of 79
pro vyhledávání: '"G. G. Qian"'
Autor:
V. V. Osipov, I. G. Saveliev, Miguel A. Muñoz, E. V. Ponizovskaya, Y.-W. Zhao, N. Garcia, G. G. Qian
Publikováno v:
Journal of Magnetism and Magnetic Materials. 240:92-99
We report ballistic magnetoresistance (BMR) values in magnetic nanocontacts for Ni, Co, and Fe. The samples range from atomic nanocontacts (smaller than 1 nm cross-section) to stable electrodeposited nanocontacts (up to 30 nm cross-section). The expe
Publikováno v:
Physica C: Superconductivity. 351:402-408
The detailed character of transport properties in underdoped Bi-2212 systems are analysed in the pseudogap state. In a certain underdoped regime, in-plane resistivity ρab(T) shows a typical S-shaped temperature dependence and a perfect ρ ab (T)=ρ
Publikováno v:
Physica C: Superconductivity. 334:237-242
The in-plane resistivity ρ ab ( T ) of single crystals Bi 2 Sr 2 Ca 1− x Pr x Cu 2 O y ( x ranging from 0 to 0.5) and Bi 2 Sr 2 Ca 1− x Y x Cu 2 O y ( x ranging from 0 to 0.41) has been measured. The doping has dramatic effects on the two system
Publikováno v:
Physica C: Superconductivity. 313:58-64
Experiment on X-ray photoelectron spectroscopy of samples of Bi 2 Sr 2− x La x CaCu 2 O y has been performed to investigate the distribution of La atoms on the cation sites and the change of valence of Bi and Cu atoms. The analysis indicates that L
Publikováno v:
Physica C: Superconductivity. 312:299-303
Polycrystalline samples of Bi 2 Sr 2− x La x CaCu 2 O y and pure Bi2212 with different oxygen content have been prepared and studied by Raman spectroscopy. No frequency change of O Bi A g mode is observed. The O Sr A g mode exhibits remarkable down
Publikováno v:
Journal of Physics: Condensed Matter. 11:3743-3750
The temperature dependences of the in-plane resistivity ab(T ) and out-of-plane resistivity c(T ) in Bi-2212 crystals covering the region from the underdoped to the overdoped regime have been measured. In the underdoped regime, ab(T ) deviates from a
Publikováno v:
Physical Review B. 58:5868-5872
The polycrystalline samples of ${\mathrm{Bi}}_{2}{\mathrm{Sr}}_{2}{\mathrm{CaCu}}_{2}{\mathrm{O}}_{y}$ (Bi2212) with different oxygen content, ${\mathrm{Bi}}_{2}{\mathrm{Sr}}_{2}{\mathrm{Ca}}_{1\ensuremath{-}x}{\mathrm{Pr}}_{x}{\mathrm{Cu}}_{2}{\math
Publikováno v:
Physical Review B. 57:10770-10774
Publikováno v:
Physical Review B. 57:5082-5085
Ballistic magnetoresistance in a magnetic nanometer sized contact: An effective gate for spintronics
Publikováno v:
ResearcherID
Digital.CSIC. Repositorio Institucional del CSIC
instname
Digital.CSIC. Repositorio Institucional del CSIC
instname
3 pages, 2 figures.
We present experimental results of unprecedented large magnetoresistance obtained in stable electrodeposited Ni–Ni nanocontacts 10–30 nm in diameter. The contacts exhibit magnetoresistance of up to 700% at room temperatur
We present experimental results of unprecedented large magnetoresistance obtained in stable electrodeposited Ni–Ni nanocontacts 10–30 nm in diameter. The contacts exhibit magnetoresistance of up to 700% at room temperatur
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