TY - JOUR
T1 - 1D goes 2D: A Berezinskii-Kosterlitz-Thouless transition in superconducting arrays of 4-Angstrom carbon nanotubes
AU - Wang, Zhe
AU - Shi, Wu
AU - Xie, Hang
AU - Zhang, Ting
AU - Wang, Ning
AU - Tang, Zikang
AU - Zhang, Xixiang
AU - Lortz, Rolf W.
AU - Sheng, Ping
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2010/10/1
Y1 - 2010/10/1
N2 - We report superconducting resistive transition characteristics for array(s) of coupled 4-Angstrom single wall carbon nanotubes embedded in aluminophosphate-five zeolite. The transition was observed to initiate at 15 K with a slow resistance decrease switching to a sharp, order of magnitude drop between 7.5 and 6.0 K with strong (anisotropic) magnetic field dependence. Both the sharp resistance drop and its attendant nonlinear IV characteristics are consistent with the manifestations of a Berezinskii-Kosterlitz-Thouless transition that establishes quasi long range order in the plane transverse to the c-axis of the nanotubes, leading to an inhomogeneous system comprising 3D superconducting regions connected by weak links. Global coherence is established at below 5 K with the appearance of a well-defined supercurrent gap/low resistance region at 2 K. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
AB - We report superconducting resistive transition characteristics for array(s) of coupled 4-Angstrom single wall carbon nanotubes embedded in aluminophosphate-five zeolite. The transition was observed to initiate at 15 K with a slow resistance decrease switching to a sharp, order of magnitude drop between 7.5 and 6.0 K with strong (anisotropic) magnetic field dependence. Both the sharp resistance drop and its attendant nonlinear IV characteristics are consistent with the manifestations of a Berezinskii-Kosterlitz-Thouless transition that establishes quasi long range order in the plane transverse to the c-axis of the nanotubes, leading to an inhomogeneous system comprising 3D superconducting regions connected by weak links. Global coherence is established at below 5 K with the appearance of a well-defined supercurrent gap/low resistance region at 2 K. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
UR - http://hdl.handle.net/10754/561572
UR - http://arxiv.org/abs/arXiv:0908.2150v1
UR - http://www.scopus.com/inward/record.url?scp=78649707769&partnerID=8YFLogxK
U2 - 10.1002/pssb.201000151
DO - 10.1002/pssb.201000151
M3 - Article
SN - 0370-1972
VL - 247
SP - 2968
EP - 2973
JO - physica status solidi (b)
JF - physica status solidi (b)
IS - 11-12
ER -