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Article overview
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Tunable caging of excitation in decorated Lieb-ladder geometry with long range connectivity | | Atanu Nandy
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2 Jan 2023 | | Abstract: | Controlled Aharonov-Bohm caging of wave train is reported in a quasi-one
dimensional version of Lieb geometry with next nearest neighbor hopping
integral within the tight-binding framework. This longer wavelength fluctuation
is considered by incorporating periodic, quasi-periodic or fractal kind of
geometry inside the skeleton of the original network. This invites exotic
eigenspectrum displaying a distribution of flat band states. Also a subtle
modulation of external magnetic flux leads to a comprehensive control over
those non-resonant modes. Real space renormalization group method provides us
an exact analytical prescription for the study of such tunable imprisonment of
excitation. The non-trivial tunability of external agent is important as well
as challenging in the context of experimental perspective. | | Source: | arXiv, 2301.00546 | | Services: | Forum | Review | PDF | Favorites | |
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