Metraipolis › archive › dc_ebbcc76a94fd

Unconventional linear transverse exciton transport in valley-layer coupling two-dimensional materials — arXiv:2609.18035

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.18035
License (as archived): CC0-1.0
Archived: 2026-10-15T17:18:41.324Z
SHA-256 of the archived text: 1ad553ef3b03b5604245bf4e95d8c248534e2b8923717d31a7459b4bd431e972
Stable URL of this page: https://metraipolis.com/documento/dc_ebbcc76a94fd

How to cite

Unconventional linear transverse exciton transport in valley-layer coupling two-dimensional materials — arXiv:2609.18035 — arXiv (en), https://arxiv.org/abs/2609.18035 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_ebbcc76a94fd (Metraipolis archive dc_ebbcc76a94fd, sha256 1ad553ef3b03b5604245bf4e95d8c248534e2b8923717d31a7459b4bd431e972)

BibTeX

@misc{dcebbcc76a94fd,
  title = {Unconventional linear transverse exciton transport in valley-layer coupling two-dimensional materials — arXiv:2609.18035},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.18035},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_ebbcc76a94fd; sha256 1ad553ef3b03b5604245bf4e95d8c248534e2b8923717d31a7459b4bd431e972},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.18035. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Valley-layer coupling (VLC) two-dimensional (2D) materials define a distinct class of quantum systems in which valleys are related by crystal, rather than time-reversal ($\mathcal{T}$) symmetry, enabling gate-controlled valley-contrasted layer polarization. Here we extend this concept to excitons. Using TiSiCo as a prototype VLC material, we show that a perpendicular electric field $E_{\perp}$ controls exciton- dispersion anisotropy and thereby generates unconventional linear transverse exciton transport in both monolayer and twisted bilayer structures. In the monolayer, this response is characterized by anisotropy-induced transverse conductivities, arising from the antisymmetric combination of diagonal elements in the conductivity tensor and strongly tunable by $E_{\perp}$. In the twisted bilayer, symmetry additionally permits transverse responses from the symmetric part of the conductivity tensor. Since intralayer excitons in different layers are connected by the Förster coupling, these symmetric and antisymmetric responses coexist and compete with the recently proposed $\mathcal{T}$-even layer Hall and Nernst exciton counterflow. This interplay is highly tunable by twisted angle, temperature, and the direction of the in-plane driving force, providing a route to disentangle distinct transverse exciton transport signals experimentally. Our results establish $E_{\perp}$ as a powerful knob for controlling exciton transport via VLC and identify VLC 2D materials as a promising platform for engineered excitonic phenomena.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-09-17 in quant-ph).
Categorie arXiv: Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ; Quantum Physics (quant-ph).
Pagina del lavoro: https://arxiv.org/abs/2609.18035 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-15T16:20:45.912Z dalla pagina https://arxiv.org/catchup/quant-ph/2026-09-17?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).