High-pressure Na-3(N-2)(4), Ca-3(N-2)(4), Sr-3(N-2)(4), and Ba(N-2)(3) featuring nitrogen dimers with noninteger charges and anion-driven metallicity

Bykov, Maxim (författare): Howard Univ, DC 20059 USA; Carnegie Inst Sci, DC 20015 USA

Doubrovinckaia, Natalia (författare): Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten,Univ Bayreuth, Germany

(creator_code:org_t)

AMER PHYSICAL SOC, 2022
2022
Engelska.
Ingår i: Physical Review Materials. - : AMER PHYSICAL SOC. - 2475-9953. ; 6:2

Relaterad länk:: https://urn.kb.se/re...; visa fler...; https://doi.org/10.1...; visa färre...

Abstract Ämnesord

Stäng

Charged molecular species, such as [N-2](x-), [O-2](x-), [C-2](x-), and [S-2](x-), follow the paradigm of carrying integer values of electrons. Here, the Na-3(N-2)(4), Ca-3(N-2)(4), Sr-3(N-2)(4), and Ba(N-2)(3) compounds were produced and characterized <70 GPa and evidenced to be composed of paradigm-breaking [N-2](x-) dimers with noninteger charges of -0.75, -1.5, -1.5, and -0.67, respectively. The anion-driven metallicity of the compounds is proposed as the physical mechanism enabling the noninteger electron count of the [N-2](x-) dimers. The properties of these dimers and the compounds bearing them are demonstrated to depend on their noninteger charge, paving the way to materials with electron-tunable features.

Av författaren/redakt...: Laniel, Dominiqu ...; Winkler, Bjoern; Fedotenko, Timof ...; Aslandukova, Ale ...; Aslandukov, Andr ...; Vogel, Sebastian; visa fler...; Meier, Thomas; Bykov, Maxim; Chariton, Stella; Glazyrin, Konsta ...; Milman, Victor; Prakapenka, Vita ...; Schnick, Wolfgan ...; Dubrovinsky, Leo ...; Doubrovinckaia, ...; visa färre...

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