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CategorySchools:AMO/QIS/CMT
FieldCondensed Matter
TitleNCTS 1-day Tutorial on Wannier functions
Start Date2018-08-09 09:00:00
End Date2018-08-09 17:00:00
PlaceRoom 833, Condensed Matter & New Physics Building, National Taiwan University
IntroductionWannier functions are functions localized in real space in order to describe the electronic structure of materials. Wannierization codes have become available in most ab initio DFT packages and the Wannier functions can be constructed explicitly. They have become an established tool in the post-processing of ab initio electronics structure calculations. The ab initio DFT band structures can be represented in tight-binding formalism by Wannier functions. Such material-specific tight-binding Hamiltonians are flexible and can be down-folded, allowing including interaction that beyond DFT such as theoretical models for strongly correlated system and superconductivity. It is worth noting that Wannier functions have been used to obtain the Berry-phase in the microscopic modern theory of polarization and recent applications in topological insulators include the direct evaluation of the Z2 invariants, thus demonstrating their usefulness in practical situations.
Contact Emailchaojungkuo@cts.nthu.edu.tw
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