Near-field probing of dielectric screening by hexagonal boron nitride in graphene integrated on silicon photonics.
作者： Rafael Salas-Montiel , Jinbong Seok , Heejun Yang , Binbin Wang , Sera Kim
关键词:
摘要: Hexagonal boron nitride (hBN) is one of the most suitable 2D materials for supporting graphene in electronic devices, and it plays a fundamental role screening out effect charge impurities contrast to inhomogeneous supports such as silicon dioxide (SiO2). Although many interesting surface science techniques scanning tunneling microscopy (STM) revealed dielectric by hBN emergent physical phenomena were observed, STM only appropriate electronics. In this paper, we demonstrate integrated on photonic waveguide from perspective near-field optical (NSOM) Raman spectroscopy. We found shifts spectra about three times lower slope decrease measured electric amplitude relative that SiO2. Based finite-difference time-domain simulations, confirm field scattering rate hBN, which implies screening, agreement with NSOM signal. Graphene photonics can pave way high-performance hybrid photonics.
sci-hub.st 参考文章(57)
Dimitrios Chatzidimitriou, Alexandros Pitilakis, Emmanouil E. Kriezis, Rigorous calculation of nonlinear parameters in graphene-comprising waveguides Journal of Applied Physics. ,vol. 118, pp. 023105- ,(2015) , 10.1063/1.4926501
Sukosin Thongrattanasiri, Frank H. L. Koppens, F. Javier García de Abajo, Complete optical absorption in periodically patterned graphene. Physical Review Letters. ,vol. 108, pp. 047401- ,(2012) , 10.1103/PHYSREVLETT.108.047401
W. Gannett, W. Regan, K. Watanabe, T. Taniguchi, M. F. Crommie, A. Zettl, Boron nitride substrates for high mobility chemical vapor deposited graphene Applied Physics Letters. ,vol. 98, pp. 242105- ,(2011) , 10.1063/1.3599708
Qiaoliang Bao, Han Zhang, Yu Wang, Zhenhua Ni, Yongli Yan, Ze Xiang Shen, Kian Ping Loh, Ding Yuan Tang, Atomic‐Layer Graphene as a Saturable Absorber for Ultrafast Pulsed Lasers Advanced Functional Materials. ,vol. 19, pp. 3077- 3083 ,(2009) , 10.1002/ADFM.200901007
Roman V. Gorbachev, Ibtsam Riaz, Rahul R. Nair, Rashid Jalil, Liam Britnell, Branson D. Belle, Ernie W. Hill, Kostya S. Novoselov, Kenji Watanabe, Takashi Taniguchi, Andre K. Geim, Peter Blake, Hunting for Monolayer Boron Nitride: Optical and Raman Signatures Small. ,vol. 7, pp. 465- 468 ,(2011) , 10.1002/SMLL.201001628
George W. Hanson, Dyadic Green's functions and guided surface waves for a surface conductivity model of graphene Journal of Applied Physics. ,vol. 103, pp. 064302- ,(2008) , 10.1063/1.2891452
Rafael Salas-Montiel, Aniello Apuzzo, Cécile Delacour, Zohreh Sedaghat, Aurélien Bruyant, Philippe Grosse, Alexei Chelnokov, Gilles Lerondel, Sylvain Blaize, Quantitative analysis and near-field observation of strong coupling between plasmonic nanogap and silicon waveguides Applied Physics Letters. ,vol. 100, pp. 231109- ,(2012) , 10.1063/1.4725511
K.I. Bolotin, K.J. Sikes, Z. Jiang, M. Klima, G. Fudenberg, J. Hone, P. Kim, H.L. Stormer, Ultrahigh electron mobility in suspended graphene Solid State Communications. ,vol. 146, pp. 351- 355 ,(2008) , 10.1016/J.SSC.2008.02.024
L. Wang, I. Meric, P. Y. Huang, Q. Gao, Y. Gao, H. Tran, T. Taniguchi, K. Watanabe, L. M. Campos, D. A. Muller, J. Guo, P. Kim, J. Hone, K. L. Shepard, C. R. Dean, One-dimensional electrical contact to a two-dimensional material. Science. ,vol. 342, pp. 614- 617 ,(2013) , 10.1126/SCIENCE.1244358
R. Geick, C. H. Perry, G. Rupprecht, Normal Modes in Hexagonal Boron Nitride Physical Review. ,vol. 146, pp. 543- 547 ,(1966) , 10.1103/PHYSREV.146.543