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Both effects are different in nature with respect to phase rigidity because of interference of non-time-reversed or time-reversed paths, respectively. Since their occurrence is largely governed by averaging effects, which depend on sample dimensions and the transport regime, we present a systematic study of flux-periodic oscillations of phase-pure zinc-blende GaAs/InAs core/shell nanowires as a function of gate voltage for samples with different contact separation lengths. Our analysis shows that with increasing contact separation length, averaging effects result in gradual reduction of h/e-periodic Aharonov-Bohm-type oscillations, while the h/2e-periodic Altshuler-Aronov-Spivak oscillations and its h/4e-periodic higher harmonics are enhanced. The additional phase rigidity seen in the h/3e-periodic oscillations is attributed to phase rigidity propagating from the neighbouring lower harmonics. Our tight-binding transport simulations on nanowires of different lengths which contain only a few scattering centers confirm the experimental observations regarding the different harmonics and their phase rigidity. Together, our experimental and simulation findings indicate quasi-ballistic transport with persistent Aharonov-Bohm-, and phase-rigid Altshuler-Aronov-Spivak-type oscillations despite few scattering centers.","dsDescription:Date":"2026-06-02"},"Subject":"Physics","citation:Keyword":[{"keyword:Term":"Nanowires"},{"keyword:Term":"Aharonov-Bohm effect"},{"keyword:Term":"electron interference effects"},{"keyword:Term":"Altshuler-Aronov-Spivak oscillations"}],"Related Publication":{"Citation":"https://arxiv.org/abs/2606.10788","ID Type":"arXiv","ID Number":"2606.10788","URL":"https://arxiv.org/abs/2606.10788"},"Grant Information":[{"grantNumber:Grant Agency":"Deutsche Forschungsgemeinschaft","grantNumber:Grant Number":"EXC 2004/2—39053476"},{"grantNumber:Grant Agency":"EPSRC","grantNumber:Grant Number":"EP/W002418/1"},{"grantNumber:Grant Agency":"Reykjavik University Research Fund","grantNumber:Grant Number":"22301"},{"grantNumber:Grant Agency":"JST ASPIRE","grantNumber:Grant 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