High-harmonic generation in semi-Dirac and Weyl semimetals with broken time-reversal symmetry: exploration of the merging of Weyl nodes

Medic, Luka (avtor), Mravlje, Jernej (avtor), Ramšak, Anton (avtor), Rejec, Tomaž (avtor)

We explore anomalous high-harmonic generation in a model that realizes a transition from a broken time-reversal symmetry Weyl semimetal to a semi-Dirac regime, i.e., a gapless semimetal with dispersion that is parabolic in one direction and conical in the other two. We point out the intensity of the induced anomalous high harmonics is high in the semi-Dirac regime. For Weyl semimetals, we reveal anomalous high harmonics are due to excitations at momenta where the dispersion is not strictly linear and that in the linearized low-energy theory the anomalous response is harmonic only. Our findings aid in the experimental characterizations of Weyl, Dirac, and semi-Dirac semimetals.

• Jezik: Angleški jezik
• Ključne besede: condensed matter physics
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Datum objave: 13.05.2024
• Leto izida: 2024
• Št. strani: Str. 205130-1-205130-6
• Številčenje: Vol. 109, iss. 20
• PID: 20.500.12556/RUL-156340
• UDK: 538.9
• ISSN pri članku: 2469-9950
• DOI: 10.1103/PhysRevB.109.205130
• COBISS.SI-ID: 195400707
• Datum objave v RUL: 21.05.2024

Gradivo je del revije

• Naslov: Physical review
• Založnik: American Physical Society
• ISSN: 2469-9950
• COBISS.SI-ID: 2997348

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: fizika kondenzirane snovi