Weitz T, Heide C, Hommelhoff P (2024)
Publication Type: Journal article
Publication year: 2024
Book Volume: 132
Article Number: 206901
Issue: 20
DOI: 10.1103/PhysRevLett.132.206901
When Bloch electrons in a solid are exposed to a strong optical field, they are coherently driven in their respective bands where they acquire a quantum phase as the imprint of the band shape. If an electron approaches an avoided crossing formed by two bands, it may be split by undergoing a Landau-Zener transition. We here employ subsequent Landau-Zener transitions to realize strong-field Bloch electron interferometry, allowing us to reveal band structure information. In particular, we measure the Fermi velocity (band slope) of graphene in the vicinity of the K points as (1.07 ± 0.04) nm*fs^(−1). We expect strong-field Bloch electron interferometry for band structure retrieval to apply to a wide range of material systems and experimental conditions, making it suitable for studying transient changes in band structure with femtosecond temporal resolution at ambient conditions.
APA:
Weitz, T., Heide, C., & Hommelhoff, P. (2024). Strong-Field Bloch Electron Interferometry for Band-Structure Retrieval. Physical Review Letters, 132. https://doi.org/10.1103/PhysRevLett.132.206901
MLA:
Weitz, Tobias, Christian Heide, and Peter Hommelhoff. "Strong-Field Bloch Electron Interferometry for Band-Structure Retrieval." Physical Review Letters 132 (2024).
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