Pressure-induced metallization and 3d-like behavior in TcS2

Dean Sayre; Emily Siska; G. Alexander Smith; Nicholas Chang; Changyong Park; Frederic Poineau; Craig P. Schwartz; Keith V. Lawler; Ashkan Salamat

doi:10.1039/D2CC01676A

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Pressure-induced metallization and 3d-like behavior in TcS₂†

Dean Sayre,

^ab Emily Siska,

^ab G. Alexander Smith,

^ac Nicholas Chang,^c Changyong Park,

^d Frederic Poineau,

^c Craig P. Schwartz,^a Keith V. Lawler

*^a and Ashkan Salamat

*^ab

Author affiliations

* Corresponding authors

^a Nevada Extreme Conditions Laboratory, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, USA
E-mail: keith.lawler@unlv.edu

^b Department of Physics & Astronomy, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, USA
E-mail: ashkan.salamat@unlv.edu

^c Department of Chemistry & Biochemistry, University of Nevada, Las Vegas, Las Vegas, Nevada 89154, USA

^d HPCAT, X-ray Science Division, Argonne National Laboratory, Illinois 60439, USA

Abstract

TcS₂ undergoes a charge transfer insulator to metal transition above 28 GPa. Laser annealing reveals a kinetically hindered high pressure arsenopyrite phase that is recoverable to ambient. The new phase is similar to the Mn-dichalcogenides rather than the expected Re-dichalcogenides and involves the formation of S–S and Tc–Tc bonds.

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Article information

DOI: https://doi.org/10.1039/D2CC01676A
Article type: Communication
Submitted: 24 Mar 2022
Accepted: 30 Apr 2022
First published: 03 May 2022

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Chem. Commun., 2022,58, 6634-6637

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Pressure-induced metallization and 3d-like behavior in TcS₂

D. Sayre, E. Siska, G. A. Smith, N. Chang, C. Park, F. Poineau, C. P. Schwartz, K. V. Lawler and A. Salamat, Chem. Commun., 2022, 58, 6634 DOI: 10.1039/D2CC01676A

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