Journal
PHYSICAL REVIEW B
Volume 97, Issue 23, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.97.235426
Keywords
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Funding
- Direccion General de Investigacion, MINECO (Spain) [FIS2015-64222-C2-1-P]
- LCBOPII potential
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The surface tension sigma of free-standing graphene is studied by path-integral simulations as a function of the temperature and the in-plane stress. Even if the applied stress vanishes, the membrane displays a finite surface tension sigma due to the coupling between the bending oscillations and the real area of the membrane. Zero-point effects for sigma are significant below 100 K. Thermal cooling drives the membrane from a planar to a wrinkled morphology. Upon heating the change is reversible and shows hysteresis, in agreement with recent experiments performed on supported graphene.
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