title: Dumbbells of five-connected silicon atoms and superconductivity in the binary silicides MSi3 (M = Ca, Y, Lu).
abstract: 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.
authors: Max-Planck-Institut für Chemische Physik fester Stoffe, 01187 Dresden, Germany. schwarz@cpfs.mpg.de
authors: Ulrich
authors: U
authors: Schwarz
authors: Aron
authors: A
authors: Wosylus
authors: Helge
authors: H
authors: Rosner
authors: Walter
authors: W
authors: Schnelle
authors: Alim
authors: A
authors: Ormeci
authors: Katrin
authors: K
authors: Meier
authors: Alexey
authors: A
authors: Baranov
authors: Michael
authors: M
authors: Nicklas
authors: Susann
authors: S
authors: Leipe
authors: Carola J
authors: CJ
authors: Müller
authors: Yuri
authors: Y
authors: Grin