Results 61 to 70 of about 24,312 (276)

Intrinsic nonmagnetic ϕ_{0} Josephson junctions in twisted bilayer graphene

Physical Review Research, 2023
Recent experiments have demonstrated the possibility to design highly controllable junctions on magic angle twisted bilayer graphene, enabling the test of its superconducting transport properties.
M. Alvarado, P. Burset, A. Levy Yeyati
doaj   +1 more source

Terahertz Conductivity of Twisted Bilayer Graphene

Physical Review Letters, 2013
Using terahertz time-domain spectroscopy, the real part of optical conductivity [$ _{1}( )$] of twisted bilayer graphene was obtained at different temperatures (10 -- 300 K) in the frequency range 0.3 -- 3 THz. On top of a Drude-like response, we see a strong peak in $ _{1} ( )$ at $\sim$2.7 THz.
Zou, X., Shang, J., Leaw, J., Luo, Z., Luo, L., La-O-Vorakiat, C., Cheng, L., Cheong, S.A., Su, H., Zhu, J.-X., Liu, Y., Loh, K.P., Castro Neto, A.H., Yu, T., Chia, E.E.M.   +14 more
openaire   +6 more sources

Terahertz photocurrent probe of quantum geometry and interactions in magic-angle twisted bilayer graphene [PDF]

Nature Materials
Moiré materials represent strongly interacting electron systems bridging topological and correlated physics. Despite notable advances, decoding wavefunction properties underlying the quantum geometry remains challenging.
Roshan Krishna Kumar, Geng Li, Riccardo Bertini, Swati Chaudhary, Krystian Nowakowski, J. Park, Sebastián Castilla, Z. Zhan, Pierre A. Pantale'on, H. Agarwal, Sergi Batlle-Porro, E. Icking, M. Ceccanti, Antoine Reserbat-Plantey, G. Piccinini, J. Barrier, E. Khestanova, T. Taniguchi, Kenji Watanabe, C. Stampfer, Gil Refael, Francisco Guinea, P. Jarillo-Herrero, Justin C W Song, Petr Stepanov, C. Lewandowski, F. Koppens   +26 more
semanticscholar   +1 more source

Spin-orbit–driven ferromagnetism at half moiré filling in magic-angle twisted bilayer graphene [PDF]

Science, 2021
Strong electron correlation and spin-orbit coupling (SOC) can have a profound influence on the electronic properties of materials. We examined their combined influence on a two-dimensional electronic system at the atomic interface between magic-angle ...
Jiangxiazi Lin, Ya-Hui Zhang, E. Morissette, Zhi Wang, Song Liu, D. Rhodes, K. Watanabe, T. Taniguchi, J. Hone, Jia Li   +9 more
semanticscholar   +1 more source

Short Versus Long Range Exchange Interactions in Twisted Bilayer Graphene

Advanced Physics Research, 2023
This study discusses the effect of long‐range interactions within the self‐consistent Hartree‐Fock (HF) approximation in comparison to short‐range atomic Hubbard interactions on the band structure of twisted bilayer graphene (TBG) at charge neutrality ...
Alejandro Jimeno‐Pozo, Zachary A. H. Goodwin, Pierre A. Pantaleón, Valerio Vitale, Lennart Klebl, Dante M. Kennes, Arash A. Mostofi, Johannes Lischner, Francisco Guinea   +8 more
doaj   +1 more source

Acoustic twisted bilayer graphene

, 2020
Twisted van der Waals (vdW) heterostructures have recently emerged as an attractive platform to study tunable correlated electron systems. However, the quantum mechanical nature of vdW heterostructures makes their theoretical and experimental exploration laborious and expensive.
Gardezi, S. Minhal, Pirie, Harris, Dorrell, William, Hoffman, Jennifer E.   +3 more
openaire   +2 more sources

Optical absorption in twisted bilayer graphene [PDF]

Physical Review B, 2013
12 pages, 9 ...
Moon, Pilkyung, Koshino, Mikito
openaire   +2 more sources

Bistritzer–MacDonald dynamics in twisted bilayer graphene

Journal of Mathematical Physics, 2023
The Bistritzer–MacDonald (BM) model, introduced by Bistritzer and MacDonald [Proc. Natl. Acad. Sci. U. S. A. 108, 12233–12237 (2011); arXiv:1009.4203], attempts to capture electronic properties of twisted bilayer graphene (TBG), even at incommensurate twist angles, by using an effective periodic model over the bilayer moiré pattern.
Alexander B. Watson, Tianyu Kong, Allan H. MacDonald, Mitchell Luskin   +3 more
openaire   +3 more sources

Light Confinement in Twisted Single-Layer 2D+ Moiré Photonic Crystals and Bilayer Moiré Photonic Crystals

Photonics, 2023
Twisted photonic crystals are photonic analogs of twisted monolayer materials such as graphene and their optical property studies are still in their infancy.
Steve Kamau, Noah Hurley, Anupama B. Kaul, Jingbiao Cui, Yuankun Lin   +4 more
doaj   +1 more source

The Coexistence of van Hove Singularities and Superlattice Dirac Points in a Slightly Twisted Graphene Bilayer

, 2013
We consider the electronic structure of a slightly twisted graphene bilayer and show the coexistence of van Hove singularities (VHSs) and superlattice Dirac points in a continuum approximation.
Chu, Zhao-Dong, He, Lin, He, Wen-Yu
core   +1 more source