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arXiv · 1801.05267

Doublon formation by ions impacting a strongly correlated finite lattice system

Karsten Balzer·Maximilian Rodriguez Rasmussen·Niclas Schlünzen·Jan-Philip Joost·Michael Bonitz
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Abstract

Strongly correlated systems of fermions have a number of exciting collective properties. Among them, the creation of a lattice that is occupied by doublons, i.e. two quantum particles with opposite spins, offers interesting electronic properties. In the past a variety of methods have been proposed to control doublon formation, both, spatially and temporally. Here, a novel mechanism is proposed and verified by exact diagonalization and nonequilibrium Green functions simulations---fermionic doublon creation by the impact of energetic ions. We report the formation of a nonequilibrium steady state with homogeneous doublon distribution. The effect should be observable in strongly correlated solids in contact with a high-pressure plasma and in fermionic atoms in optical lattices.

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Karsten Balzer, Maximilian Rodriguez Rasmussen, Niclas Schlünzen, Jan-Philip Joost, Michael Bonitz. 2018-01-16. Doublon formation by ions impacting a strongly correlated finite lattice system. https://doi.org/10.1103/physrevlett.121.267602

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