Unformatted text preview: value of electronic mobility that would be required in a bulk sample of such molecules in order to equal the electrical conductivity of copper metal (5.96 10 5 S/cm)? 3. Hückel Theory: Within the Hückel approximation, write down the secular determinant for benzene p z orbitals to yield the molecular πorbitals of 1,3 cyclobutadiene (C 4 H 4 ). Is 1,3 cyclobutadiene aromatic? 4. Landauer Theory. One reason that we may not see the effects of quantum resistors is because there are many possible modes. In Landauer formalism the conductivity for a quantum wire with one conduction mode and one scattering center is given by G = (2 e 2 / h )(T/R). What would the conductivity be for M modes, in parallel?...
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 Fall '08
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 Atom, Electron, Chemical bond, Solid State Nanoelectronics, Waser, benzene pz orbitals

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