Wave-packet dynamics of Bogoliubov quasiparticles: Quantum metric effects
We study the dynamics of the Bogoliubov wave packet in superconductors and calculate the
supercurrent carried by the wave packet. We discover an anomalous contribution to the
supercurrent, related to the quantum metric of the Bloch wave function. This anomalous
contribution is most important for flat or quasiflat bands, as exemplified by the attractive
Hubbard models on the Creutz ladder and sawtooth lattice. Our theoretical framework is
general and can be used to study a wide variety of phenomena, such as spin transport and …
supercurrent carried by the wave packet. We discover an anomalous contribution to the
supercurrent, related to the quantum metric of the Bloch wave function. This anomalous
contribution is most important for flat or quasiflat bands, as exemplified by the attractive
Hubbard models on the Creutz ladder and sawtooth lattice. Our theoretical framework is
general and can be used to study a wide variety of phenomena, such as spin transport and …
Wave-packet dynamics of Bogoliubov quasiparticles
We study the dynamics of the Bogoliubov wave packet in superconductors and calculate the
supercurrent carried by the wave packet. We discover an anomalous contribution to the
supercurrent, related to the quantum metric of the Bloch wave function. This anomalous
contribution is most important for flat or quasiflat bands, as exemplified by the attractive
Hubbard models on the Creutz ladder and sawtooth lattice. Our theoretical framework is
general and can be used to study a wide variety of phenomena, such as spin transport and …
supercurrent carried by the wave packet. We discover an anomalous contribution to the
supercurrent, related to the quantum metric of the Bloch wave function. This anomalous
contribution is most important for flat or quasiflat bands, as exemplified by the attractive
Hubbard models on the Creutz ladder and sawtooth lattice. Our theoretical framework is
general and can be used to study a wide variety of phenomena, such as spin transport and …
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