Results 1 to 10 of about 10,146 (239)

Waveguide-integrated twisted bilayer graphene photodetectors [PDF]

Nature Communications
Graphene photodetectors have exhibited high bandwidth and capability of being integrated with silicon photonics (SiPh), holding promise for future optical communication devices.
Qinci Wu, Jun Qian, Yuechen Wang, Luwen Xing, Ziyi Wei, Xin Gao, Yurui Li, Zhongfan Liu, Hongtao Liu, Haowen Shu, Jianbo Yin, Xingjun Wang, Hailin Peng   +12 more
doaj   +4 more sources

Phonons in Twisted Bilayer Graphene [PDF]

Physical Review B, 2013
We theoretically investigated phonon dispersion in AA-stacked, AB-stacked and twisted bilayer graphene with various rotation angles. The calculations were performed using the Born-von-Karman model for the intra-layer atomic interactions and the Lennard ...
Balandin, Alexander A., Cocemasov, Alexandr I., Nika, Denis L.   +2 more
core   +4 more sources

Disorder in twisted bilayer graphene

Physical Review Research, 2020
We develop a theory for a type of disorder in condensed matter systems arising from local twist-angle fluctuations in two strongly coupled van der Waals monolayers twisted with respect to each other to create a flat-band moiré superlattice.
Justin H. Wilson, Yixing Fu, S. Das Sarma, J. H. Pixley   +3 more
doaj   +3 more sources

Theory of correlated insulating behaviour and spin-triplet superconductivity in twisted double bilayer graphene

Nature Communications, 2019
Twisted bilayer graphene exhibits correlated electronic phases and superconductivity, but its precise nature is under debate. Here, Lee and Khalaf et al.
Jong Yeon Lee, Eslam Khalaf, Shang Liu, Xiaomeng Liu, Zeyu Hao, Philip Kim, Ashvin Vishwanath   +6 more
doaj   +2 more sources

Anti-Symmetric Electromagnetic Interactions’ Response in Electron Circular Dichroism and Chiral Origin of Periodic, Complementary Twisted Angle in Twisted Bilayer Graphene [PDF]

Molecules, 2022
Many novel physical properties of twisted bilayer graphene have been discovered and studied successively, but the physical mechanism of the chiral modulation of BLG by a twisted angle lacks theoretical research.
Guoqiang Dai, Xiangtao Chen, Ying Jin, Jingang Wang   +3 more
doaj   +2 more sources

Grain Boundary Guided Folding of Graphene for Twisted Bilayer Graphene [PDF]

Nanomaterials
Bilayer graphene exhibits intriguing physical and mechanical properties that are suitable for advanced electronic device applications. By introducing a new degree of freedom through interlayer twisting, exotic phenomena such as superconductivity can ...
Feiru Feng, Kun Zhou, Kang Zhang, Liya Wang, Ruijie Wang, Jun Xia, Chun Tang   +6 more
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Unusual magnetotransport in twisted bilayer graphene. [PDF]

Proc Natl Acad Sci U S A, 2022
Significance When two sheets of graphene are twisted to the magic angle of 1.1 ∘ , the resulting flat moiré bands can host exotic correlated electronic states such as superconductivity and ferromagnetism. Here, we show transport properties of a twisted bilayer graphene device at 1.38 ∘
Finney J, Sharpe AL, Fox EJ, Hsueh CL, Parker DE, Yankowitz M, Chen S, Watanabe K, Taniguchi T, Dean CR, Vishwanath A, Kastner MA, Goldhaber-Gordon D.   +12 more
europepmc   +4 more sources

Chiral Tunnelling in Twisted Graphene Bilayer [PDF]

Physical Review Letters, 2013
The perfect transmission in graphene monolayer and the perfect reflection in Bernal graphene bilayer for electrons incident in the normal direction of a potential barrier are viewed as two incarnations of the Klein paradox.
Chu, Zhao-Dong, He, Lin, He, Wen-Yu
core   +3 more sources

Heavy quasiparticles and cascades without symmetry breaking in twisted bilayer graphene [PDF]

Nature Communications, 2023
Among the variety of correlated states exhibited by twisted bilayer graphene, cascades in the spectroscopic properties and in the electronic compressibility occur over larger ranges of energy, twist angle and temperature compared to other effects.
Anushree Datta, M. J. Calderón, A. Camjayi, E. Bascones   +3 more
doaj   +2 more sources

Quantum twisting microscopy of phonons in twisted bilayer graphene. [PDF]

Nature
The coupling between electrons and phonons is one of the fundamental interactions in solids, underpinning a wide range of phenomena, such as resistivity, heat conductivity and superconductivity. However, direct measurements of this coupling for individual phonon modes remain a substantial challenge.
Birkbeck J, Xiao J, Inbar A, Taniguchi T, Watanabe K, Berg E, Glazman L, Guinea F, von Oppen F, Ilani S.   +9 more
europepmc   +5 more sources