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Highly Localized Strain in a MoS2/Au Heterostructure Revealed by Tip-Enhanced Raman Spectroscopy

Rahaman, Mahfujur ; Rodriguez, Raul D. ; Plechinger, Gerd ; Moras, Stefan ; Schüller, Christian ; Korn, Tobias ; Zahn, Dietrich R. T.


Tip-enhanced Raman spectroscopy (TERS) has been rapidly improved over the past decade and opened up opportunities to study phonon properties of materials at the nanometer scale. In this Letter, we report on TERS of an ultrathin MoS2 flake on a nanostructured Au on silicon surface forming a two-dimensional (2D) crystal/plasmonic heterostructure. Au nanostructures (shaped in triangles) are prepared ...


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