Wilhelm, Jan and Groessing, Patrick and Seith, Adrian and Crewse, Jack and Nitsch, Maximilian and Weigl, Leonard and Schmid, Christoph and Evers, Ferdinand (2021) Semiconductor Bloch-equations formalism: Derivation and application to high-harmonic generation from Dirac fermions. PHYSICAL REVIEW B, 103 (12): 125419. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
We rederive the semiconductor Bloch equations emphasizing the close link to the Berry connection. Our rigorous derivation reveals the existence of two further contributions to the current, in addition to the frequently considered intraband and polarization-related interband terms. The extra contributions become sizable in situations with strong dephasing or when the dipole-matrix elements are strongly wave-number dependent. We apply the formalism to high-harmonic generation for a Dirac metal. The extra terms add to the frequency-dependent emission intensity (high-harmonic spectrum) significantly at certain frequencies changing the total signal up to a factor of 10.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DYNAMICS; INTRABAND; ELECTRONS; INTERBAND |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Ferdinand Evers Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 10 Aug 2022 07:41 |
| Last Modified: | 10 Aug 2022 07:41 |
| URI: | https://pred.uni-regensburg.de/id/eprint/46257 |
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