Ultrafast electric field controlled spin correlations in the Hubbard model

Dasari NR, Eckstein M (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Physical Review B American Physical Society

Book Volume: 100

Journal Issue: 12

DOI: 10.1103/PhysRevB.100.121114

Abstract

Highly intense electric field pulses can move the electronic momentum occupation in correlated metals over large portions of the Brillouin zone, leading to phenomena such as dynamic Bloch oscillations. Using the nonequilibrium fluctuation-exchange approximation for the two-dimensional Hubbard model, we study how such nonthermal electron distributions drive collective spin and charge fluctuations. Suitable pulses can induce a highly anisotropic modification of the occupied momenta, and the corresponding spin dynamics results in a transient change from antiferromagnetic to anisotropic ferromagnetic correlations. To good approximation this behavior is understood in terms of an instantaneous response of the spin correlations to the single-particle properties.

Authors with CRIS profile

Nagamalleswara Rao Dasari Lehrstuhl für Theoretische Festkörperphysik Martin Eckstein Lehrstuhl für Theoretische Festkörperphysik

How to cite

APA:

Dasari, N.R., & Eckstein, M. (2019). Ultrafast electric field controlled spin correlations in the Hubbard model. Physical Review B, 100(12). https://doi.org/10.1103/PhysRevB.100.121114

MLA:

Dasari, Nagamalleswara Rao, and Martin Eckstein. "Ultrafast electric field controlled spin correlations in the Hubbard model." Physical Review B 100.12 (2019).

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