Superatomic solid solutions

Jingjing Yang¹, Jake C Russell², Songsheng Tao³, Martina Lessio⁴, Feifan Wang², Alaina C Hartnett⁵, Samuel R Peurifoy², Evan A Doud², Evan S O'Brien², Natalia Gadjieva², David R Reichman², Xiaoyang Zhu², Andrew C Crowther⁵, Simon J L Billinge^{3

6}, Xavier Roy⁷, Michael L Steigerwald⁸, Colin Nuckolls⁹

Affiliations

¹ Department of Chemistry, Columbia University, New York, NY, USA. jy2960@columbia.edu.
² Department of Chemistry, Columbia University, New York, NY, USA.
³ Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, USA.
⁴ School of Chemistry, University of New South Wales, Sydney, NSW, Australia.
⁵ Department of Chemistry, Barnard College, New York, NY, USA.
⁶ Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY, USA.
⁷ Department of Chemistry, Columbia University, New York, NY, USA. xr2114@columbia.edu.
⁸ Department of Chemistry, Columbia University, New York, NY, USA. mls2064@columbia.edu.
⁹ Department of Chemistry, Columbia University, New York, NY, USA. cn37@columbia.edu.

PMID: 33903737
DOI: 10.1038/s41557-021-00680-8

Superatomic solid solutions

Jingjing Yang et al. Nat Chem. 2021 Jun.

. 2021 Jun;13(6):607-613.

doi: 10.1038/s41557-021-00680-8. Epub 2021 Apr 26.

Authors

Affiliations

¹ Department of Chemistry, Columbia University, New York, NY, USA. jy2960@columbia.edu.
² Department of Chemistry, Columbia University, New York, NY, USA.
³ Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, USA.
⁴ School of Chemistry, University of New South Wales, Sydney, NSW, Australia.
⁵ Department of Chemistry, Barnard College, New York, NY, USA.
⁶ Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY, USA.
⁷ Department of Chemistry, Columbia University, New York, NY, USA. xr2114@columbia.edu.
⁸ Department of Chemistry, Columbia University, New York, NY, USA. mls2064@columbia.edu.
⁹ Department of Chemistry, Columbia University, New York, NY, USA. cn37@columbia.edu.

PMID: 33903737
DOI: 10.1038/s41557-021-00680-8

Abstract

In atomic solids, substitutional doping of atoms into the lattice of a material to form solid solutions is one of the most powerful approaches to modulating its properties and has led to the discovery of various metal alloys and semiconductors. Herein we have prepared solid solutions in hierarchical solids that are built from atomically precise clusters. Two geometrically similar metal chalcogenide clusters, Co₆Se₈(PEt₃)₆ and Cr₆Te₈(PEt₃)₆, were combined as random substitutional mixture, in three different ratios, in a crystal lattice together with fullerenes. This does not alter the underlying crystalline structure of the [cluster][C₆₀]₂ material, but it influences its electronic and magnetic properties. All three solid solutions showed increased electrical conductivities compared with either the Co- or Cr-based parent material, substantially so for two of the Co:Cr ratios (up to 100-fold), and lowered activation barriers for electron transport. We attribute this to the existence of additional energy states arising from the materials' structural heterogeneity, which effectively narrow transport gaps.

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References

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Superatomic solid solutions

Affiliations

Superatomic solid solutions

Authors

Affiliations

Abstract

References

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