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Can Doping Graphite Trigger Room Temperature Superconductivity? Evidence for Granular High‐Temperature Superconductivity in Water‐Treated Graphite Powder
Author(s) -
Scheike T.,
Böhlmann W.,
Esquinazi P.,
BarzolaQuiquia J.,
Ballestar A.,
Setzer A.
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201202219
Subject(s) - superconductivity , graphite , materials science , doping , condensed matter physics , room temperature superconductor , high temperature superconductivity , nanotechnology , composite material , physics , optoelectronics
Granular superconductivity in powders of small graphite grains (several tens of micrometers) is demonstrated after treatment with pure water. The temperature, magnetic field and time dependence of the magnetic moment of the treated graphite powder provides evidence for the existence of superconducting vortices with some similarities to high‐temperature granular superconducting oxides but even at temperatures above 300 K. Room temperature superconductivity in doped graphite or at its interfaces appears to be possible.