Observation of high Tc one dimensional superconductivity in 4 angstrom carbon nanotube arrays

Handle URI:
http://hdl.handle.net/10754/622959
Title:
Observation of high Tc one dimensional superconductivity in 4 angstrom carbon nanotube arrays
Authors:
Zhang, Bing; Liu, Yang; Chen, Qihong; Lai, Zhiping ( 0000-0001-9555-6009 ) ; Sheng, Ping
Abstract:
The only known approach to fabricate large, uniform arrays of 4-Å single wall carbon nanotubes (SWNTs) is by using zeolite crystals as the template, in which the nanotubes are formed by chemical vapor deposition inside the linear channels of the AlPO-5 (AFI for short) zeolite. However, up to now the pore filling factor has been very low, as evidenced by the weight percentage of carbon in thermal gravimetric analysis (TGA) measurements. In this work, we show that by using a new, micro-platelet AFI crystals as the template, combined with the use of a new CVD process, we can increase the TGA result to 22.5wt%, which translates to a pore filling factor of 91%. We have observed one dimensional (1D) superconductivity in such samples. The temperature dependence of resistance shows a smooth decreasing trend below 60 K, and the differential resistance displays a gap that disappears above the 1D superconducting initiation temperature. The observed behaviour is shown to agree very well with the theoretical predictions of 1D superconductivity.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Zhang B, Liu Y, Chen Q, Lai Z, Sheng P (2017) Observation of high Tc one dimensional superconductivity in 4 angstrom carbon nanotube arrays. AIP Advances 7: 025305. Available: http://dx.doi.org/10.1063/1.4976847.
Publisher:
AIP Publishing
Journal:
AIP Advances
Issue Date:
14-Feb-2017
DOI:
10.1063/1.4976847
Type:
Article
ISSN:
2158-3226
Sponsors:
This work has been supported by the Research Grants Council of Hong Kong, Grants HKUST9/CRF/08 and RGC 16304314.
Additional Links:
http://aip.scitation.org/doi/10.1063/1.4976847
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorZhang, Bingen
dc.contributor.authorLiu, Yangen
dc.contributor.authorChen, Qihongen
dc.contributor.authorLai, Zhipingen
dc.contributor.authorSheng, Pingen
dc.date.accessioned2017-03-05T06:13:15Z-
dc.date.available2017-03-05T06:13:15Z-
dc.date.issued2017-02-14en
dc.identifier.citationZhang B, Liu Y, Chen Q, Lai Z, Sheng P (2017) Observation of high Tc one dimensional superconductivity in 4 angstrom carbon nanotube arrays. AIP Advances 7: 025305. Available: http://dx.doi.org/10.1063/1.4976847.en
dc.identifier.issn2158-3226en
dc.identifier.doi10.1063/1.4976847en
dc.identifier.urihttp://hdl.handle.net/10754/622959-
dc.description.abstractThe only known approach to fabricate large, uniform arrays of 4-Å single wall carbon nanotubes (SWNTs) is by using zeolite crystals as the template, in which the nanotubes are formed by chemical vapor deposition inside the linear channels of the AlPO-5 (AFI for short) zeolite. However, up to now the pore filling factor has been very low, as evidenced by the weight percentage of carbon in thermal gravimetric analysis (TGA) measurements. In this work, we show that by using a new, micro-platelet AFI crystals as the template, combined with the use of a new CVD process, we can increase the TGA result to 22.5wt%, which translates to a pore filling factor of 91%. We have observed one dimensional (1D) superconductivity in such samples. The temperature dependence of resistance shows a smooth decreasing trend below 60 K, and the differential resistance displays a gap that disappears above the 1D superconducting initiation temperature. The observed behaviour is shown to agree very well with the theoretical predictions of 1D superconductivity.en
dc.description.sponsorshipThis work has been supported by the Research Grants Council of Hong Kong, Grants HKUST9/CRF/08 and RGC 16304314.en
dc.publisherAIP Publishingen
dc.relation.urlhttp://aip.scitation.org/doi/10.1063/1.4976847en
dc.rightsAll article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleObservation of high Tc one dimensional superconductivity in 4 angstrom carbon nanotube arraysen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalAIP Advancesen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kongen
kaust.authorLiu, Yangen
kaust.authorLai, Zhipingen
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