Robust two-dimensional charge density waves (CDW) are discovered in organic-inorganic molecular islands of just a single constituent thickness on a Ag(111) surface.
Significance and Impact
CDW is intensely studied in inorganic materials such as high Tc superconductors; the discovery of CDW in just a single-layer thick molecular island opens a new avenue of research in strongly correlated systems formed by organic molecules.
- α-(BEDT-TTF)2-I3 films were studied via scanning tunneling microscopy (STM) at the Center for Nanoscale Materials 9CNM) and Ohio University.
- STM images at 80 K and 5 K reveal coexistence of certain CDW patterns commensurate with the underlying molecular lattice.
- The CDW can be shifted a molecular lattice site by energy transfer of a single inelastic tunneling electron.
- DFT calculations were performed at the CNM.
Work was performed in part at the CNM.
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