Reversible nano-scale phase separation of Rb4C60 under pressure

• The alkali fulleride Rb4C60 has been investigated by studies of the resistance and by Raman spectroscopy under pressures up to 2 GPa and 13 GPa, respectively. Our data show a reversible phase separation into metallic Rb3C60 and Rb6C60 at pressures above 1 GPa. The reversibility indicates that the phase separation primarily occurs on the nanometer length scale. The data explain several puzzling results reported in the recent literature.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

Fullerenes

fullerides

C60

alkali metal intercalation

Rb4C60

resistance

Raman spectroscopy

phase separation

high pressure

low temperature

structural stability

disproportionation

reversibility

nanostructure

Condensed matter physics

Kondenserade materiens fysik

fysik

Physics

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