Attosecond Reconstruction of Strain Tensors via Electronic Fingerprints

Abstract

We demonstrate an attosecond transient absorption spectroscopy (ATAS) scheme for reconstructing strain tensors in two-dimensional materials. Using strained graphene as a prototype system, we show that the fishbone structures in ATAS serve as distinctive spectral fingerprints of strain, where strain-induced shifts and splittings of van Hove singularities encode the magnitude and orientation of the strain tensor, respectively. By combining density-matrix simulations with analytical modeling, we establish a direct mapping between transient absorption spectra and strain tensors, enabling accurate retrieval of lattice deformation from ultrafast electronic responses. Our work introduces an attosecond spectroscopic paradigm for ultrafast strain metrology, where electronic fingerprints replace conventional structural probes for sensing lattice deformation in quantum materials.

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BibTeX RIS

BibTeX

@misc{li2026attosecond,
  title = {{Attosecond Reconstruction of Strain Tensors via Electronic Fingerprints}},
  author = {Jing Li and Jiayu Yan and Guoyong Yuan and Chao Chen and Shang Wang and Fulong Dong},
  howpublished = {arXiv},
  year = {2026},
  month = aug,
  doi = {10.48550/arxiv.2608.30133},
  eprint = {2608.30133},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2608.30133},
}

RIS

TY  - UNPB
TI  - Attosecond Reconstruction of Strain Tensors via Electronic Fingerprints
AU  - Jing Li
AU  - Jiayu Yan
AU  - Guoyong Yuan
AU  - Chao Chen
AU  - Shang Wang
AU  - Fulong Dong
PY  - 2026
DA  - 2026/08/31
PB  - arXiv
DO  - 10.48550/arxiv.2608.30133
UR  - https://arxiv.org/abs/2608.30133
AB  - We demonstrate an attosecond transient absorption spectroscopy (ATAS) scheme for reconstructing strain tensors in two-dimensional materials. Using strained graphene as a prototype system, we show that the fishbone structures in ATAS serve as distinctive spectral fingerprints of strain, where strain-induced shifts and splittings of van Hove singularities encode the magnitude and orientation of the strain tensor, respectively. By combining density-matrix simulations with analytical modeling, we establish a direct mapping between transient absorption spectra and strain tensors, enabling accurate retrieval of lattice deformation from ultrafast electronic responses. Our work introduces an attosecond spectroscopic paradigm for ultrafast strain metrology, where electronic fingerprints replace conventional structural probes for sensing lattice deformation in quantum materials.
ER  -

Abstract

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