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RESEARCH PRODUCT
Orientational Ordering ofN2OMolecules Adsorbed on Graphite (0001): A Novel Commensurate Pinwheel Structure
Kromker BH. WiechertLeinbock BHofmann Msubject
PinwheelMaterials scienceElectron diffractionChemical physicsPhase (matter)General Physics and AstronomyMoleculeHexagonal latticeLinear molecular geometryGraphitePhysics::Chemical PhysicsAtomic physicsPotential energydescription
The structure and orientational ordering of N2O molecules physisorbed on graphite (0001) is investigated applying x-ray, neutron, and low-energy electron diffraction techniques. Combining the results of the three techniques, we find that N2O forms a highly ordered, hexagonal, commensurate (sqrt[21]xsqrt[21])R10.89 degrees phase. The unit cell contains seven molecules which are arranged in a seven-sublattice pinwheel structure, unexpected for linear molecules on a hexagonal lattice. Potential energy calculations corroborate these results.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-02-28 | Physical Review Letters |