@article{oai:soar-ir.repo.nii.ac.jp:00016526,
 author = {Fujimori,  Toshihiko and Morelos-Gomez,  Aaron and Zhu,  Zhen and Muramatsu,  Hiroyuki and Futamura,  Ryusuke and Urita,  Koki and Terrones,  Mauricio and Hayashi,  Takuya and Endo,  Morinobu and Hong,  Sang Young and Choi,  Young Chul and Tomanek,  David and Kaneko,  Katsumi},
 journal = {NATURE COMMUNICATIONS},
 month = {Jul},
 note = {Despite extensive research for more than 200 years, the experimental isolation of monatomic sulphur chains, which are believed to exhibit a conducting character, has eluded scientists. Here we report the synthesis of a previously unobserved composite material of elemental sulphur, consisting of monatomic chains stabilized in the constraining volume of a carbon nanotube. This one-dimensional phase is confirmed by high-resolution transmission electron microscopy and synchrotron X-ray diffraction. Interestingly, these one-dimensional sulphur chains exhibit long domain sizes of up to 160 nm and high thermal stability (similar to 800 K). Synchrotron X-ray diffraction shows a sharp structural transition of the one-dimensional sulphur occurring at similar to 450-650 K. Our observations, and corresponding electronic structure and quantum transport calculations, indicate the conducting character of the one-dimensional sulphur chains under ambient pressure. This is in stark contrast to bulk sulphur that needs ultrahigh pressures exceeding similar to 90 GPa to become metallic., Article, NATURE COMMUNICATIONS. 4:2162 (2013)},
 title = {Conducting linear chains of sulphur inside carbon nanotubes},
 volume = {4},
 year = {2013}
}