Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Aivazian, Grant"'
Autor:
Aivazian, Grant, Yu, Hongyi, Wu, Sanfeng, Yan, Jiaqiang, Mandrus, David G., Cobden, David, Yao, Wang, Xu, Xiaodong
Publikováno v:
2D Mater. 4, 025024 (2017)
We performed ultrafast degenerate pump-probe spectroscopy on monolayer WSe2 near its exciton resonance. The observed differential reflectance signals exhibit signatures of strong many-body interactions including the exciton-exciton interaction and fr
Externí odkaz:
http://arxiv.org/abs/1612.02714
Autor:
Wu, Sanfeng, Wang, Lei, Lai, You, Shan, Wen-Yu, Aivazian, Grant, Zhang, Xian, Taniguchi, Takashi, Watanabe, Kenji, Xiao, Di, Dean, Cory, Hone, James, Li, Zhiqiang, Xu, Xiaodong
In conventional light harvesting devices, the absorption of a single photon only excites one electron, which sets the standard limit of power-conversion efficiency, such as the Shockley-Queisser limit. In principle, generating and harnessing multiple
Externí odkaz:
http://arxiv.org/abs/1603.04934
Photocurrent measurements provide a powerful means of studying the spatially resolved optoelectronic and electrical properties of a material or device. Generally speaking there are two classes of mechanism for photocurrent generation: those involving
Externí odkaz:
http://arxiv.org/abs/1510.00765
Autor:
Aivazian, Grant, Gong, Zhirui, Jones, Aaron M, Chu, Rui-Lin, Yan, Jiaqiang, Mandrus, David G, Zhang, Chuanwei, Cobden, David, Yao, Wang, Xu, Xiaodong
Local energy extrema of the bands in momentum space, or valleys, can endow electrons in solids with pseudo-spin in addition to real spin. In transition metal dichalcogenides this valley pseudo-spin, like real spin, is associated with a magnetic momen
Externí odkaz:
http://arxiv.org/abs/1407.2645
Autor:
Rivera, Pasqual, Schaibley, John R., Jones, Aaron M., Ross, Jason S., Wu, Sanfeng, Aivazian, Grant, Klement, Philip, Ghimire, Nirmal J., Yan, Jiaqiang, Mandrus, D. G., Yao, Wang, Xu, Xiaodong
Two-dimensional (2D) materials, such as graphene1, boron nitride2, and transition metal dichalcogenides (TMDs)3-5, have sparked wide interest in both device physics and technological applications at the atomic monolayer limit. These 2D monolayers can
Externí odkaz:
http://arxiv.org/abs/1403.4985
Autor:
Jones, Aaron Mitchell, Yu, Hongyi, Ghimire, Nirmal, Wu, Sanfeng, Aivazian, Grant, Ross, Jason Solomon, Zhao, Bo, Yan, Jiaqiang, Mandrus, David, Xiao, Di, Yao, Wang, Xu, Xiaodong
Due to degeneracies arising from crystal symmetries, it is possible for electron states at band edges ("valleys") to have additional spin-like quantum numbers. An important question is whether coherent manipulation can be performed on such valley pse
Externí odkaz:
http://arxiv.org/abs/1303.5318
Monolayers of transition metal dichalcogenides (TMDCs) are atomically thin direct-gap semiconductors with potential applications in nanoelectronics, optoelectronics, and electrochemical sensing. Recent theoretical and experimental efforts suggest tha
Externí odkaz:
http://arxiv.org/abs/1302.5758
Autor:
Ross, Jason S, Wu, Sanfeng, Yu, Hongyi, Ghimire, Nirmal J, Jones, Aaron M, Aivazian, Grant, Yan, Jiaqiang, Mandrus, David G., Xiao, Di, Yao, Wang, Xu, Xiaodong
Monolayer group VI transition metal dichalcogenides have recently emerged as semiconducting alternatives to graphene in which the true two-dimensionality (2D) is expected to illuminate new semiconducting physics. Here we investigate excitons and trio
Externí odkaz:
http://arxiv.org/abs/1211.0072
Autor:
Wu, Sanfeng, Ross, Jason S, Aivazian, Grant, Jones, Aaron, Fei, Zaiyao, Liu, Gui-Bin, Zhu, Wenguang, Xiao, Di, Yao, Wang, Cobden, David, Xu, Xiaodong
Crystal symmetry governs the nature of electronic Bloch states. For example, in the presence of time reversal symmetry, the orbital magnetic moment and Berry curvature of the Bloch states must vanish unless inversion symmetry is broken. In certain 2D
Externí odkaz:
http://arxiv.org/abs/1208.6069
The unusual electrical and optical properties of graphene make it a promising candidate for optoelectronic applications. An important, but as yet unexplored aspect is the role of photo-excited hot carriers in charge and energy transport at graphene i
Externí odkaz:
http://arxiv.org/abs/1108.3360