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14: Linear Sodium Chain — Transport properties

  • Outline: Compare the quantum conductance of a periodic linear chain of Sodium atoms with that of a defected chain
periodic defected
\(6\times1\times1\) supercell of a periodic linear sodium chain (left panel) and unit cell of a defected linear sodium chain (right panel) plotted with the XCrySDen program. The former consists of 2 Na atoms per unit cell (6 unit cells have been drawn for comparison with the defected system). The latter consists of 13 Na atoms per unit cell.

1-2. Run pwscf and wannier90 for the periodic and defected systems.

3. Compare the quantum conductance of the periodic (bulk) calculation with the defected (LCR) calculation.

The quantum conductance and the DOS are shown in Figure 2.

Image title
DOS (left) and quantum conductance (right) of periodic (solid black) and defected (solid red) Sodium linear chain.