期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 24, 期 47, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/0953-8984/24/47/475304
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资金
- US National Science Foundation [DMR-1005301]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1005301] Funding Source: National Science Foundation
We investigate the magnetic-field-and temperature-dependent transport properties of CVD-grown graphene transferred to a flexible substrate (Kapton) and subjected to externally applied strain. In zero magnetic field, a logarithmic temperature-dependent conductivity correction, resulting from strong electron-electron interaction, becomes weaker with the application of strains as large as 0.6% because of an increased rate of chiral-symmetry-breaking scattering. With the application of a perpendicular magnetic field, we also observe positive magnetoconductance at low temperature (T = 5 K) due to weak localization. This magnetoconductance is suppressed with increasing strain, concomitant with a rapid decrease of the intervalley scattering rate (tau(-1)(i)). Our results are in good agreement with theoretical expectations and are consistent with a strain-induced decoupling between graphene and its underlying Kapton substrate.
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