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Bulk Photovoltaic Effect Driven by Collective Excitations in a Correlated Insulator
Tatsuya Kaneko, Zhiyuan Sun, Yuta Murakami +2
We investigate the bulk photovoltaic effect, which rectifies light into electric current, in a collective quantum state with correlation driven electronic ferroelectricity. We show…
Comparative Many-Body Study of PrNiO and NdNiO
Jonathan Karp, Alexander Hampel, Manuel Zingl +4
We study the many-body electronic structure of the stoichiometric and electron-doped trilayer nickelate PrNiO in comparison to that of the stoichiometric and hole-doped…
Influence of spin and orbital fluctuations on Mott-Hubbard exciton dynamics in LaVO Thin Films
D. J. Lovinger, M. Brahlek, P. Kissin +4
Recent optical conductivity measurements reveal the presence of Hubbard excitons in certain Mott insulators. In light of these results, it is important to revisit the dynamics of t…
Topological charge pumping in excitonic insulators
Zhiyuan Sun, Andrew J. Millis
We show that in excitonic insulators with -wave electron-hole pairing, an applied electric field (either pulsed or static) can induce a -wave component to the order parameter…
Nonlinear spectroscopy of collective modes in excitonic insulator
Denis Golez, Zhiyuan Sun, Yuta Murakami +2
The nonlinear optical response of an excitonic insulator coupled to lattice degrees of freedom is shown to depend in strong and characteristic ways on whether the insulating behavi…
Graphene/-RuCl: An Emergent 2D Plasmonic Interface
Daniel J. Rizzo, Bjarke S. Jessen, Zhiyuan Sun +16
Work function-mediated charge transfer in graphene/-RuCl heterostructures has been proposed as a strategy for generating highly-doped 2D interfaces. In this geometry, graphe…