Superconductivity in Bi2Sr2(Sr,Ca)CuOi multilayers obtained by molecular beam epitaxy
(1999) In IEEE Transactions on Applied Superconductivity 9(2 PART 2). p.2006-2009- Abstract
Bi-based high temperature superconduting multilayers have been obtained by Molecular Beam Epitaxy (MBE) using a deposition method which consists of both co-deposition and growth interruption techniques. We have studied two kinds of structures in which a layer of BizSrzCuOg+s (2201) is alternately stacked by an insulating layer of CaCuOi or SrCuOi in order to obtain 2201/CaCuO2 or IWl/SrCuO?. multilayers. Reflection High Energy Electron Diffraction (RHEED), used to control the quality of the interfaces and the two-dimensional growth mode, gives evidence of an increase in the surface roughness increasing the number of periods. The layered structure has been confirmed comparing experimental and simulated Xray spectra. The R vs. T curves of... (More)
Bi-based high temperature superconduting multilayers have been obtained by Molecular Beam Epitaxy (MBE) using a deposition method which consists of both co-deposition and growth interruption techniques. We have studied two kinds of structures in which a layer of BizSrzCuOg+s (2201) is alternately stacked by an insulating layer of CaCuOi or SrCuOi in order to obtain 2201/CaCuO2 or IWl/SrCuO?. multilayers. Reflection High Energy Electron Diffraction (RHEED), used to control the quality of the interfaces and the two-dimensional growth mode, gives evidence of an increase in the surface roughness increasing the number of periods. The layered structure has been confirmed comparing experimental and simulated Xray spectra. The R vs. T curves of the 22Ql/SrCuC>2 multilayers present an onset and behave differently from those of the single phase samples with the same stoichiometry but they are not superconducting down to T = 4.2K. On the contrary, the 22Ql/CaCuC>2 samples are superconducting with critical temperatures strongly depending on the CaCuOz thickness.
(Less)
- author
- Salvato, M. ; Attanasio, G. ; Carbone, G. LU ; Di Luccio, T. ; Prischepa, S. L. ; Russo, R. and Maritato, L.
- publishing date
- 1999
- type
- Contribution to journal
- publication status
- published
- in
- IEEE Transactions on Applied Superconductivity
- volume
- 9
- issue
- 2 PART 2
- pages
- 4 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:0032646297
- ISSN
- 1051-8223
- DOI
- 10.1109/77.784857
- language
- English
- LU publication?
- no
- id
- 10c7a371-4e16-4cb3-b439-013f6d057dde
- date added to LUP
- 2021-12-15 12:08:34
- date last changed
- 2022-02-02 02:08:45
@article{10c7a371-4e16-4cb3-b439-013f6d057dde, abstract = {{<p>Bi-based high temperature superconduting multilayers have been obtained by Molecular Beam Epitaxy (MBE) using a deposition method which consists of both co-deposition and growth interruption techniques. We have studied two kinds of structures in which a layer of BizSrzCuOg+s (2201) is alternately stacked by an insulating layer of CaCuOi or SrCuOi in order to obtain 2201/CaCuO2 or IWl/SrCuO?. multilayers. Reflection High Energy Electron Diffraction (RHEED), used to control the quality of the interfaces and the two-dimensional growth mode, gives evidence of an increase in the surface roughness increasing the number of periods. The layered structure has been confirmed comparing experimental and simulated Xray spectra. The R vs. T curves of the 22Ql/SrCuC>2 multilayers present an onset and behave differently from those of the single phase samples with the same stoichiometry but they are not superconducting down to T = 4.2K. On the contrary, the 22Ql/CaCuC>2 samples are superconducting with critical temperatures strongly depending on the CaCuOz thickness.</p>}}, author = {{Salvato, M. and Attanasio, G. and Carbone, G. and Di Luccio, T. and Prischepa, S. L. and Russo, R. and Maritato, L.}}, issn = {{1051-8223}}, language = {{eng}}, number = {{2 PART 2}}, pages = {{2006--2009}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Applied Superconductivity}}, title = {{Superconductivity in Bi<sub>2</sub>Sr<sub>2</sub>(Sr,Ca)CuOi multilayers obtained by molecular beam epitaxy}}, url = {{http://dx.doi.org/10.1109/77.784857}}, doi = {{10.1109/77.784857}}, volume = {{9}}, year = {{1999}}, }