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Zoology and wildlife conservation

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Abstracts » Zoology and wildlife conservation

Imaging the effects of individual zinc impurity atoms on superconductivity in Bi2Sr2CaCu2O8+delta

Article Abstract:

It has been possible to use scanning tunnelling microscopy (STM) to investigate local effects due to impurity atoms of known identity and crystal location in a high-Tc superconductor. This research has focused on Zn impurity atoms in the high-temperature superconductor Bi2Sr2CaCu2O8+delta because these atoms create strongly altered bulk superconducting properties and highly unusual spectroscopic effects. A home-built, low-temperature STM with a number of unique features particularly suitable for investigating high-temperature superconductors was used. A number of unexpected phenomena were observed, including the extended 'quasiparticle beams' oriented with the gap maxima.

Author: Pan, S.H., Hudson, E.W., Lang, K.M., Eisaki, H., Uchida, S., Davis, J.C.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000

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Interplay of magnetism and high-Tc superconductivity at individual Ni impurity atoms in Bi2Sr2CaCu2O8+delta

Article Abstract:

Research into the influence of individual Ni atoms on the local electronic structure of Bi2Sr2CaCu2O8+delta is presented. It was established that, despite their magnetic moments, scattering at Ni atoms is dominated by potential interactions. The magnetic Ni atoms coexist with unweakened superconductivity.

Author: Pan, S.H., Hudson, E.W., Lang, K.M., Eisaki, H., Uchida, S., Davis, J.C., Madhavan, V.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001

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Microscopic electronic inhomogeneity in the high-Tc superconductor Bi2Sr2CaCu2O8+x

Article Abstract:

Research is presented concerning the use of spectroscopy and scanning tunnelling microscopy to investigate the existence of an electronic inhomogeneity in the superconducting compound Bi2Sr2CaCu2O8+x.

Author: Pan, S.H., Hudson, E.W., Lang, K.M., Eisaki, H., Uchida, S., Davis, J.C., Wang, Z., O'Neal, J.P., Badzey, R.L., Chamon, C., King, H., Engelbrecht, J.R., Gupta, A.K., Ng, K.-W.
Publisher: Macmillan Publishing Ltd.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
Letter to the Editor, Scanning tunneling microscopy, Superconductors

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Subjects list: Research, Usage, Spectrum analysis, Superconductivity, Spectroscopy
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