Zobrazeno 1 - 10
of 54
pro vyhledávání: '"DaSilva, Ashley"'
Autor:
Jung, Jeil, Laksono, Evan, DaSilva, Ashley M., MacDonald, Allan H., Mucha-Kruczyński, Marcin, Adam, Shaffique
Publikováno v:
Phys. Rev. B 96, 085442 (2017)
Nearly aligned graphene on hexagonal boron nitride (G/BN) can be accurately modeled by a Dirac Hamiltonian perturbed by smoothly varying moir\'e pattern pseudospin fields. Here, we present the moir\'e-band model of G/BN for arbitrary small twist angl
Externí odkaz:
http://arxiv.org/abs/1706.06016
Autor:
Kim, Kyounghwan, DaSilva, Ashley, Huang, Shengqiang, Fallahazad, Babak, Larentis, Stefano, Taniguchi, Takashi, Watanabe, Kenji, LeRoy, Brian J., MacDonald, Allan H., Tutuc, Emanuel
Publikováno v:
Proc. Natl. Acad. Sci. U.S.A. 114, 3364 (2017)
According to electronic structure theory, bilayer graphene is expected to have anomalous electronic properties when it has long-period moir\'e patterns produced by small misalignments between its individual layer honeycomb lattices. We have realized
Externí odkaz:
http://arxiv.org/abs/1703.00888
In fractionally filled Landau levels there is only a small energy difference between broken translational symmetry electron-crystal states and exotic correlated quantum fluid states. We show that the spatially periodic substrate interaction associate
Externí odkaz:
http://arxiv.org/abs/1605.07138
Autor:
Wong, Dillon, Wang, Yang, Jung, Jeil, Pezzini, Sergio, DaSilva, Ashley M., Tsai, Hsin-Zon, Jung, Han Sae, Khajeh, Ramin, Kim, Youngkyou, Lee, Juwon, Kahn, Salman, Tollabimazraehno, Sajjad, Rasool, Haider, Watanabe, Kenji, Taniguchi, Takashi, Zettl, Alex, Adam, Shaffique, MacDonald, Allan H., Crommie, Michael F.
Publikováno v:
Phys. Rev. B 92, 155409 (2015)
Twisted bilayer graphene (tBLG) forms a quasicrystal whose structural and electronic properties depend on the angle of rotation between its layers. Here we present a scanning tunneling microscopy study of gate-tunable tBLG devices supported by atomic
Externí odkaz:
http://arxiv.org/abs/1510.02888
Publikováno v:
Phys. Rev. B 92, 155406 (2015)
The conductivity of graphene on a boron nitride substrate exhibits features in the terahertz (THz) and infrared (IR) frequency regimes that are associated with the periodic moir\'e pattern formed by the weakly coupled two-dimensional materials. The T
Externí odkaz:
http://arxiv.org/abs/1507.01834
Publikováno v:
Physical Review B, 91, 245422 (2015)
All local electronic properties of graphene on a hexagonal boron nitride (hBN) substrate exhibit spatial moir\'e patterns related to lattice constant and orientation differences between shared triangular Bravais lattices. We apply a previously derive
Externí odkaz:
http://arxiv.org/abs/1503.04312
Publikováno v:
Nature Communications 6:6308 (2015)
Recent progress in preparing well controlled 2D van der Waals heterojunctions has opened up a new frontier in materials physics. In this paper we address the intriguing energy gaps that are sometimes observed when a graphene sheet is placed on a hexa
Externí odkaz:
http://arxiv.org/abs/1403.0496
Autor:
Zhao, Yanfei, Chang, Cui-Zu, Jiang, Ying, DaSilva, Ashley, Sun, Yi, Wang, Huichao, Xing, Ying, Wang, Yong, He, Ke, Ma, Xucun, Xue, Qi-Kun, Wang, Jian
Publikováno v:
SCIENTIFIC REPORTS 3, 3060 (2013)
In spite of much work on topological insulators (TIs), systematic experiments for TI/TI heterostructures remain absent. We grow a high quality heterostructure containing single quintuple layer (QL) of Bi2Se3 on 19 QLs of Bi2Te3 and compare its transp
Externí odkaz:
http://arxiv.org/abs/1308.5311
Publikováno v:
Phys. Rev. B 88, 195411 (2013)
We consider the optical properties of finite systems composed of a series of graphene sheets separated by thin dielectric layers. Because these systems respond as conductors to electric fields in the plane of the graphene sheets and as insulators to
Externí odkaz:
http://arxiv.org/abs/1307.6550
Autor:
DaSilva, Ashley M.
Publikováno v:
Solid State Communications 151, 1444 (2011)
With the recent observation of graphene-like Landau levels at the surface of topological insulators, the possibility of fractional quantum Hall effect, which is a fundamental signature of strong correlations, has become of interest. Some experiments
Externí odkaz:
http://arxiv.org/abs/1106.4418