تقرير
Non-monotonic temperature dependent transport in graphene grown by Chemical Vapor Deposition
| العنوان: | Non-monotonic temperature dependent transport in graphene grown by Chemical Vapor Deposition |
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| المؤلفون: | Heo, J., Chung, H. J., Lee, Sung-Hoon, Yang, H., Seo, D. H., Shin, J. K., Chung, U-In, Seo, S., Hwang, E. H., Sarma, S. Das |
| المصدر: | Phys. Rev. B 84, 035421 (2011) |
| سنة النشر: | 2010 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| الوصف: | Temperature-dependent resistivity of graphene grown by chemical vapor deposition (CVD) is investigated. We observe in low mobility CVD graphene device a strong insulating behavior at low temperatures and a metallic behavior at high temperatures manifesting a non-monotonic in the temperature dependent resistivity.This feature is strongly affected by carrier density modulation. To understand this anomalous temperature dependence, we introduce thermal activation of charge carriers in electron-hole puddles induced by randomly distributed charged impurities. Observed temperature evolution of resistivity is then understood from the competition among thermal activation of charge carriers, temperature-dependent screening and phonon scattering effects. Our results imply that the transport property of transferred CVD-grown graphene is strongly influenced by the details of the environment Comment: 7 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.84.035421 |
| URL الوصول: | http://arxiv.org/abs/1009.2506 |
| رقم الأكسشن: | edsarx.1009.2506 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.84.035421 |
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