Volume 57, Issue 39 pp. 12809-12813
Communication

Discovery of Cu3Pb

Alexandra D. Tamerius

Alexandra D. Tamerius

Department of Chemistry, Northwestern University, Evanston, IL, 60208 USA

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Dr. Samantha M. Clarke

Dr. Samantha M. Clarke

Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, 94550 USA

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Dr. Mingqiang Gu

Dr. Mingqiang Gu

Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208 USA

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Dr. James P. S. Walsh

Dr. James P. S. Walsh

Department of Chemistry, Northwestern University, Evanston, IL, 60208 USA

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Dr. Marco Esters

Dr. Marco Esters

Center for Materials Genomics, Duke University, Durham, NC, 27708 USA

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Dr. Yue Meng

Dr. Yue Meng

HPCAT, Geophysical Laboratory, Carnegie Institute of Washington, Argonne, IL, 60439 USA

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Prof. Christopher H. Hendon

Prof. Christopher H. Hendon

Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR, 97403 USA

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Prof. James M. Rondinelli

Prof. James M. Rondinelli

Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208 USA

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Prof. Steven D. Jacobsen

Prof. Steven D. Jacobsen

Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL, 60208 USA

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Prof. Danna E. Freedman

Corresponding Author

Prof. Danna E. Freedman

Department of Chemistry, Northwestern University, Evanston, IL, 60208 USA

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First published: 04 September 2018
Citations: 9

Graphical Abstract

Under pressure: The discovery of the first intermetallic compound in the Cu-Pb system, Cu3Pb, by high-pressure synthesis in a laser-heated diamond anvil cell, is presented.

Abstract

Materials discovery enables both realization and understanding of new, exotic, physical phenomena. An emerging approach to the discovery of novel phases is high-pressure synthesis within diamond anvil cells, thereby enabling in situ monitoring of phase formation. Now, the discovery via high-pressure synthesis of the first intermetallic compound in the Cu-Pb system, Cu3Pb is reported. Cu3Pb is notably the first structurally characterized mid- to late-first-row transition-metal plumbide. The structure of Cu3Pb can be envisioned as a direct mixture of the two elemental lattices. From this new framework, we gain insight into the structure as a function of pressure and hypothesize that the high-pressure polymorph of lead is a possible prerequisite for the formation of Cu3Pb. Crucially, electronic structure computations reveal band crossings near the Fermi level, suggesting that chemically doped Cu3Pb could be a topologically nontrivial material.

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