A Fine Structure of Strongly-Bound Interlayer Exciton States in Twisted Bilayer Graphene

被引：0
|
作者：
Patel, Hiral [1 ]
Huang, Lujie [2 ,3 ]
Kim, Cheol-Joo [2 ,3 ]
Park, Jiwoong [2 ,3 ]
Graham, Matt W. [1 ]
机构：
[1] Oregon State Univ, Dept Phys, Corvallis, OR 97331 USA
[2] Cornell Univ, Kavli Inst Cornell Nanosci, Ithaca, NY 14853 USA
[3] Univ Chicago, Dept Chem, Inst Mol Engn, 5735 S Ellis Ave, Chicago, IL 60637 USA
来源：
2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) | 2017年
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We uncover excitonic states in twisted bilayer graphene using two-photon emission and transient absorption microscopy at the single-grain level. The observed intraband and two-photon spectral peaks imply angle-dependent exciton binding energies ranging from 0.45 to 0.76 eV.
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页数：2
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