Carbon content drives high temperature superconductivity in a carbonaceous sulfur hydride below 100 GPa

G Alexander Smith; Ines E Collings; Elliot Snider; Dean Smith; Sylvain Petitgirard; Jesse S Smith; Melanie White; Elyse Jones; Paul Ellison; Keith V Lawler; Ranga P Dias; Ashkan Salamat

doi:10.1039/d2cc03170a

Carbon content drives high temperature superconductivity in a carbonaceous sulfur hydride below 100 GPa

Chem Commun (Camb). 2022 Aug 11;58(65):9064-9067. doi: 10.1039/d2cc03170a.

Authors

G Alexander Smith^{1

2}, Ines E Collings³, Elliot Snider⁴, Dean Smith¹, Sylvain Petitgirard⁵, Jesse S Smith⁶, Melanie White^{1

7}, Elyse Jones⁴, Paul Ellison⁷, Keith V Lawler¹, Ranga P Dias^{4

8}, Ashkan Salamat^{1

7}

Affiliations

¹ Nevada Extreme Conditions Laboratory, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, USA. [email protected].
² Department of Chemistry & Biochemistry, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, USA.
³ Centre for X-ray Analytics, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstraße 129, 8600 Dübendorf, Switzerland.
⁴ Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA.
⁵ Department of Earth Sciences, ETH Zürich, Zürich 8025, Switzerland.
⁶ HPCAT, X-ray Science Division, Argonne National Laboratory, Illinois 60439, USA.
⁷ Department of Physics & Astronomy, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, USA.
⁸ Department of Physics & Astronomy, University of Rochester, Rochester, New York 14627, USA.

PMID: 35837875
DOI: 10.1039/d2cc03170a

Abstract

We report a previously unobserved superconducting state of the photosynthesized carbonaceous sulfur hydride (C-S-H) system with a maximum T_C of 191(1) K below 100 GPa. The properties of C-S-H are dependent on carbon content, and X-ray diffraction and simulations reveal the system remains molecular-like up to 100 GPa.

Publication types

Retracted Publication