Pressure dependence of Meissner effect in films of ropes of boron-doped carbon nanotubes

M. Matsudaira; J. Haruyama; T. Shimizu; J. Nakamura; T. Eguchi; T. Nishio; Y. Hasegawa; H. Sano; Y. Iye; J. Reppert; A. M. Rao

doi:10.1016/j.spmi.2008.11.012

Pressure dependence of Meissner effect in films of ropes of boron-doped carbon nanotubes

M. Matsudaira, J. Haruyama, T. Shimizu, J. Nakamura, T. Eguchi, T. Nishio, Y. Hasegawa, H. Sano, Y. Iye, J. Reppert, A. M. Rao

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Superconductivity in carbon nanotubes (CNTs) is attracting considerable attention. Recently, we have reported successful boron doping into single-walled CNTs (SWNTs) and also revealed its correlation with superconductivity. In the present study, we report results of high-pressure magnetization measurements in films consisting of ropes of boron-doped SWNTs. It reveals that T_c and magnitude for Meissner effect are mostly independent of applied pressure, while the magnitude of graphite diamagnetism drastically increases as pressure increases. We also report the observation of resistance drop and correlation of boron doping with multi-walled CNTs, in which we reported superconductivity previously.

Original language	English
Pages (from-to)	333-339
Number of pages	7
Journal	Superlattices and Microstructures
Volume	46
Issue number	1-2
DOIs	https://doi.org/10.1016/j.spmi.2008.11.012
Publication status	Published - 2009 Jul 1
Externally published	Yes

Keywords

Carbon nanotube
Carrier doping
Meissner effect
Pressure dependence
Rope
Superconductivity

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/j.spmi.2008.11.012

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Matsudaira, M., Haruyama, J., Shimizu, T., Nakamura, J., Eguchi, T., Nishio, T., Hasegawa, Y., Sano, H., Iye, Y., Reppert, J., & Rao, A. M. (2009). Pressure dependence of Meissner effect in films of ropes of boron-doped carbon nanotubes. Superlattices and Microstructures, 46(1-2), 333-339. https://doi.org/10.1016/j.spmi.2008.11.012

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abstract = "Superconductivity in carbon nanotubes (CNTs) is attracting considerable attention. Recently, we have reported successful boron doping into single-walled CNTs (SWNTs) and also revealed its correlation with superconductivity. In the present study, we report results of high-pressure magnetization measurements in films consisting of ropes of boron-doped SWNTs. It reveals that Tc and magnitude for Meissner effect are mostly independent of applied pressure, while the magnitude of graphite diamagnetism drastically increases as pressure increases. We also report the observation of resistance drop and correlation of boron doping with multi-walled CNTs, in which we reported superconductivity previously.",

keywords = "Carbon nanotube, Carrier doping, Meissner effect, Pressure dependence, Rope, Superconductivity",

author = "M. Matsudaira and J. Haruyama and T. Shimizu and J. Nakamura and T. Eguchi and T. Nishio and Y. Hasegawa and H. Sano and Y. Iye and J. Reppert and Rao, {A. M.}",

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AU - Matsudaira, M.

AU - Haruyama, J.

AU - Shimizu, T.

AU - Nakamura, J.

AU - Eguchi, T.

AU - Nishio, T.

AU - Hasegawa, Y.

AU - Sano, H.

AU - Iye, Y.

AU - Reppert, J.

AU - Rao, A. M.

PY - 2009/7/1

Y1 - 2009/7/1

N2 - Superconductivity in carbon nanotubes (CNTs) is attracting considerable attention. Recently, we have reported successful boron doping into single-walled CNTs (SWNTs) and also revealed its correlation with superconductivity. In the present study, we report results of high-pressure magnetization measurements in films consisting of ropes of boron-doped SWNTs. It reveals that Tc and magnitude for Meissner effect are mostly independent of applied pressure, while the magnitude of graphite diamagnetism drastically increases as pressure increases. We also report the observation of resistance drop and correlation of boron doping with multi-walled CNTs, in which we reported superconductivity previously.

AB - Superconductivity in carbon nanotubes (CNTs) is attracting considerable attention. Recently, we have reported successful boron doping into single-walled CNTs (SWNTs) and also revealed its correlation with superconductivity. In the present study, we report results of high-pressure magnetization measurements in films consisting of ropes of boron-doped SWNTs. It reveals that Tc and magnitude for Meissner effect are mostly independent of applied pressure, while the magnitude of graphite diamagnetism drastically increases as pressure increases. We also report the observation of resistance drop and correlation of boron doping with multi-walled CNTs, in which we reported superconductivity previously.

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KW - Carrier doping

KW - Meissner effect

KW - Pressure dependence

KW - Rope

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