Dumbbells of Five-Connected Silicon Atoms and Superconductivity in the Binary Silicides MSi3 (M = Ca, Y, Lu)

Autor:	Alexey I. Baranov, Michael Nicklas, Carola J. Müller, Ulrich S. Schwarz, Walter Schnelle, Yuri Grin, Helge Rosner, Katrin Meier, Alim Ormeci, Aron Wosylus, Susann Leipe
Rok vydání:	2012
Předmět:	Condensed Matter::Quantum Gases Superconductivity Silicon Condensed matter physics Chemistry chemistry.chemical_element Binary number General Chemistry Biochemistry Catalysis Crystallography Colloid and Surface Chemistry Transition metal Oxidation state Metastability
Zdroj:	Journal of the American Chemical Society. 134:13558-13561
ISSN:	1520-5126 0002-7863
Popis:	The new metastable binary silicides MSi(3) (M = Ca, Y, Lu) have been synthesized by high-pressure, high-temperature reactions at pressures between 12(2) and 15(2) GPa and temperatures from 900(100) to 1400(150) K. The atomic patterns comprise intricate silicon layers of condensed molecule-like Si(2) dimers. The alkaline-earth element adopts the oxidation state +2, while the rare-earth and transition metals realize +3. All of the compounds exhibit BCS-type superconductivity with weak electron-phonon coupling below critical temperatures of up to 7 K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78473c0a641acc66fb4e04fa5706e9ec https://doi.org/10.1021/ja3055194 Zobrazit plný text záznamu