Observation of superconductivity in granular Bi nanowires fabricated by electrodeposition

Mingliang Tian; Jinguo Wang; Nitesh Kumar; Tianheng Han; Yoji Kobayashi; Ying Liu; Thomas E. Mallouk; Moses H.W. Chan

doi:10.1021/nl0618041

Observation of superconductivity in granular Bi nanowires fabricated by electrodeposition

Mingliang Tian, Jinguo Wang, Nitesh Kumar, Tianheng Han, Yoji Kobayashi, Ying Liu, Thomas E. Mallouk, Moses H.W. Chan

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77 Scopus citations

Abstract

Bulk rhombohedral Bi at ambient pressure is a well-known semimetal, and its transition to a superconductor has not been observed, at least down to 50 mK. We report that, unlike bulk rhombohedral Bi, granular Bi nanowires with well-defined rhombohedral grains of ∼10 nm diameter, fabricated by electrochemically depositing Bi into porous polycarbonate membranes at ambient pressure, are superconducting with two transition temperatures, Tc, of 7.2 and 8.3 K. These Tc values coincide with Tc values of the high-pressure phases Bi-III and Bi-V, respectively. Analysis of our structural and transport data indicates that the superconductivity in granular Bi nanowires probably arises from grain boundary areas where there are structural reconstructions between the grains showing a preferred orientation within a small angular distribution. © 2006 American Chemical Society.

Original language	English (US)
Pages (from-to)	2773-2780
Number of pages	8
Journal	Nano Letters
Volume	6
Issue number	12
DOIs	https://doi.org/10.1021/nl0618041
State	Published - Dec 1 2006
Externally published	Yes

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ASJC Scopus subject areas

Bioengineering
General Materials Science
General Chemistry
Mechanical Engineering
Condensed Matter Physics

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title = "Observation of superconductivity in granular Bi nanowires fabricated by electrodeposition",

abstract = "Bulk rhombohedral Bi at ambient pressure is a well-known semimetal, and its transition to a superconductor has not been observed, at least down to 50 mK. We report that, unlike bulk rhombohedral Bi, granular Bi nanowires with well-defined rhombohedral grains of ∼10 nm diameter, fabricated by electrochemically depositing Bi into porous polycarbonate membranes at ambient pressure, are superconducting with two transition temperatures, Tc, of 7.2 and 8.3 K. These Tc values coincide with Tc values of the high-pressure phases Bi-III and Bi-V, respectively. Analysis of our structural and transport data indicates that the superconductivity in granular Bi nanowires probably arises from grain boundary areas where there are structural reconstructions between the grains showing a preferred orientation within a small angular distribution. {\textcopyright} 2006 American Chemical Society.",

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T1 - Observation of superconductivity in granular Bi nanowires fabricated by electrodeposition

AU - Tian, Mingliang

AU - Wang, Jinguo

AU - Kumar, Nitesh

AU - Han, Tianheng

AU - Kobayashi, Yoji

AU - Liu, Ying

AU - Mallouk, Thomas E.

AU - Chan, Moses H.W.

N1 - Generated from Scopus record by KAUST IRTS on 2022-09-13

PY - 2006/12/1

Y1 - 2006/12/1

N2 - Bulk rhombohedral Bi at ambient pressure is a well-known semimetal, and its transition to a superconductor has not been observed, at least down to 50 mK. We report that, unlike bulk rhombohedral Bi, granular Bi nanowires with well-defined rhombohedral grains of ∼10 nm diameter, fabricated by electrochemically depositing Bi into porous polycarbonate membranes at ambient pressure, are superconducting with two transition temperatures, Tc, of 7.2 and 8.3 K. These Tc values coincide with Tc values of the high-pressure phases Bi-III and Bi-V, respectively. Analysis of our structural and transport data indicates that the superconductivity in granular Bi nanowires probably arises from grain boundary areas where there are structural reconstructions between the grains showing a preferred orientation within a small angular distribution. © 2006 American Chemical Society.

AB - Bulk rhombohedral Bi at ambient pressure is a well-known semimetal, and its transition to a superconductor has not been observed, at least down to 50 mK. We report that, unlike bulk rhombohedral Bi, granular Bi nanowires with well-defined rhombohedral grains of ∼10 nm diameter, fabricated by electrochemically depositing Bi into porous polycarbonate membranes at ambient pressure, are superconducting with two transition temperatures, Tc, of 7.2 and 8.3 K. These Tc values coincide with Tc values of the high-pressure phases Bi-III and Bi-V, respectively. Analysis of our structural and transport data indicates that the superconductivity in granular Bi nanowires probably arises from grain boundary areas where there are structural reconstructions between the grains showing a preferred orientation within a small angular distribution. © 2006 American Chemical Society.

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EP - 2780

JO - Nano Letters

JF - Nano Letters

IS - 12

ER -

Observation of superconductivity in granular Bi nanowires fabricated by electrodeposition

Abstract

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