As the possibility to decouple temporal and spatial variations of the electromagnetic field, leading to a wavelength stretching, has been recognized to be of paramount importance for practical applications, we generalize the idea of stretchability from the framework of electromagnetic waves to massive particles. A necessary and sufficient condition which allows one to identify energetically stable configuration of a 1D quantum particle characterized by arbitrary large spatial regions where the associated wave-function exhibit a flat, non-zero profile is presented, together with examples on well-known and widely used potential profiles and an application to 2D models.
|Titolo:||Stretching potential engineering|
|Data di pubblicazione:||2020|
|Parole Chiave:||metamaterials; potential engineering; quantum engineering; quantum metamaterials; quantum physics; semiconductors|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1088/1751-8121/ab59ee|
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