Berry-Phase Effects on Transport of Low-Energy Squeezed Bosons.

Lee, Jongjun M; Lee, Hyun-Woo · Nano Lett · 2026

basic_science · Level V

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Abstract

Berry-phase effects on the anomalous transport of bosonic particles are more challenging for experimental detection than their Fermion counterparts since the Bose-Einstein statistics weaken such anomalous transport. We propose a method to boost these effects in bosonic systems using bosonic squeezing. This method allows a large Berry curvature to arise near the <i>bottom</i> of the lowest-lying bosonic energy bands so that the Bose-Einstein statistics strengthens (not weakens) the Berry phase effects. Magnonic systems for Berry-phase-induced transport detection are discussed. Our theoretical work is expected to motivate the experimental detection of Berry-phase effects in bosonic systems.