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Low-Frequency Interlayer Breathing Modes in Few-Layer Black Phosphorus
Open accessAbstract
As a new two-dimensional layered material, black phosphorus (BP) is a very promising material for nanoelectronics and optoelectronics. We use Raman spectroscopy and first-principles theory to characterize and understand the low-frequency (LF) interlayer breathing modes (<100 cm(-1)) in few-layer BP for the first time. Using a laser polarization dependence study and group theory analysis, the breathing modes are assigned to Ag symmetry. Compared to the high-frequency (HF) Raman modes, the LF breathing modes are considerably more sensitive to interlayer coupling and, thus, their frequencies show a stronger dependence on the number of layers. Hence, they constitute an effective means to probe both the crystalline orientation and thickness of few-layer BP. Furthermore, the temperature dependence shows that in the temperature range -150 to 30 °C, the breathing modes have a weak anharmonic behavior, in contrast to the HF Raman modes that exhibit strong anharmonicity.
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Cited by
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Metadata
- Authors
- Ling, X., Liang, L., Huang, S., Puretzky, A. A., Geohegan, D. B., Sumpter, B. G., Kong, J., Meunier, V., & Dresselhaus, M. S.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-05-18
- Volume
- 15
- Issue
- 6
- Pages
- 4080-4088
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W1592424311
- Cited by
- 204
- References
- 0
- FWCI
- 14.39
- Type
- journal article
- Language
- en
- Open access
- green
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- Ling, X., Liang, L., Huang, S., Puretzky, A. A., Geohegan, D. B., Sumpter, B. G., Kong, J., Meunier, V., & Dresselhaus, M. S. (2015). Low-Frequency Interlayer Breathing Modes in Few-Layer Black Phosphorus. Nano Letters. https://doi.org/10.1021/acs.nanolett.5b01117
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