| Autor: |
Levy, Antonio L., Sushkov, Andrei B., Liu, Fengguang, Shen, Bing, Ni, Ni, Drew, Howard D., Jenkins, Gregory S. |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. B 101, 125102 (2020) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.101.125102 |
| Popis: |
Chiral pumping from optical electric fields oscillating at THz frequencies is observed in the Weyl material TaAs with electric and magnetic fields aligned along both the a- and c-axes. Free carrier spectral weight enhancement is measured directly for the first time, confirming theoretical expectations of chiral pumping. A departure from linear field-dependence of the Drude weight is observed at the highest fields in the quantum limit, providing direct evidence of field-dependent Fermi velocity of the chiral Landau level. Implications for the chiral magnetic effect in Weyl semimetals from the optical f-sum rule are discussed. |
| Databáze: |
arXiv |
| Externí odkaz: |
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