English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We analyze the quasienergy-spectrum and the valence to conduction-bandtransition probabilities of a tilted anisotropic Dirac material subject tolinearly and circularly polarized electromagnetic fields. Thequasienergy-spectrum is numerically calculated from the monodromy matrix of theSchr\"odinger equation via the Floquet theorem for arbitrarily intenseelectromagnetic fields. To asses the valence to conduction-band transitiontimes we deduced a Rabi-like formula in the rotating wave approximation. In thestrong-field regime the spectrum as a function of the momentum componentsdivides into two very distinctive regions. In the first, located around theDirac point, the quasi-spectrum is significantly distorted by the field as theelectronic parameters are renormalized by electronic-dressing. In the second,all the characteristics of the free carrier spectrum are retained. Linearlypolarized light anisotropically deforms the spectrum according to the fieldpolarization direction. Dirac-like points form around the original Dirac point.The quasi spectrum of circularly polarized light, instead, exhibits a gapformation in the Dirac point and has elliptical symmetry. We show that, incontrast to the single-photon resonant transitions that characterize theweak-field regime, the strong-field regime is dominated by multiphotonresonances.

Floquet spectrum and electronic transitions of tilted anisotropic Dirac materials under electromagnetic radiation: monodromy matrix approach