Vibrational Property of α-Borophene Determined by Tip-Enhanced Raman Spectroscopy.

Vibrational Property of α-Borophene Determined by Tip-Enhanced Raman Spectroscopy.
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DOI:
10.3390/molecules27030834
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发表时间:
2022-01-27
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Wu K
Wu K
中科院分区:
其他
文献类型:
--
作者:
Zhang P;Tian X;Sheng S;Ma C;Chen L;Feng B;Cheng P;Zhang Y;Chen L;Zhao J;Wu K

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We report a Raman characterization of the α borophene polymorph by scanning tunneling microscopy combined with tip-enhanced Raman spectroscopy. A series of Raman peaks were discovered, which can be well related with the phonon modes calculated based on an asymmetric buckled α structure. The unusual enhancement of high-frequency Raman peaks in TERS spectra of α borophene is found and associated with its unique buckling when landed on the Ag(111) surface. Our paper demonstrates the advantages of TERS, namely high spatial resolution and selective enhancement rule, in studying the local vibrational properties of materials in nanoscale.
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