Real space observation of peroxide-like dimers on a sodium tungsten bronze surface by scanning tunnelling microscopy
Abstract
Oxygen dimers on the (2 × 1) reconstructed surface of Na0.65,WO3(001) have been observed by scanning tunnelling microscopy, with an O–O separation (2.2 Å) that is significantly less than twice the ionic radius of the oxide ion (2.8 Å).