Light-induced orbital magnetism in metals via inverse Faraday effect,Physical Review B

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Light-induced orbital magnetism in metals via inverse Faraday effect
Physical Review B ( IF 3.2 ) Pub Date : 2024-09-03 , DOI: 10.1103/physrevb.110.094302
Priya Sharma _{1,

2} , Alexander V. Balatsky _{1,

3,

4,

5}

Affiliation

We present a microscopic calculation of the inverse Faraday effect in metals. We derive a static local magnetic moment induced on the application of high-frequency light, using the Eilenberger formulation of quasiclassical theory. We include the effect of disorder and formulate a theory applicable across the entire temperature range, in the absence of external applied fields. For light-induced electric fields of amplitude

\sim 100 kV/cm

, the induced fields are large

\sim 0.1 T

for metallic Nb. The predictions of our theory agree with recent experimental and theoretical results [O. H.-C. Cheng et al., Nat. Photon. 14, 365 (2020) and J. Hurst et al., Phys. Rev. B 98, 134439 (2018)]. An extension of this approach to superconductors would open a new route of inducing orbital magnetic field and potentially vortices in superconductors.

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