RT Journal Article
T1 STM-driven transition from rippled to buckled graphene in a spin-membrane model
A1 Ruiz-García, M.
A1 López Bonilla, Luis Francisco
A1 Prados, A.
AB We consider a simple spin-membrane model for rippling in graphene. The model exhibits transitions from a flat but rippled membrane to a buckled one. At high temperature the transition is second order, but it is first order at low temperature for appropriate strength of the spin-spin coupling. Driving the system across the first-order phase transition in nonequilibrium conditions that mimic interaction of the graphene membrane with a scanning tunneling microscopy (STM) tip explains recent experiments. In particular, we observe a reversible behavior for small values of the STM current and an irreversible transition from a flat rippled membrane to a rigid buckled membrane when the current surpasses a critical value. This work makes it possible to test the mechanical properties of graphene under different temperature and electrostatic conditions.
PB APS
SN 2469-9950
YR 2016
FD 2016-11-15
LK https://hdl.handle.net/10016/38759
UL https://hdl.handle.net/10016/38759
LA eng
NO This work has been supported by the Spanish Ministerio de Economía y Competitividad Grants No. MTM2014-56948-C2-2-P (M.R.G. and L.L.B.) and No. FIS2014-53808-P (A.P.). M.R.G. also acknowledges support from MECD through the FPU program and from a MINECO - Residencia de Estudiantes scholarship. A.P. thanks C. A. Plata for helpful discussions and a careful reading of the manuscript.
DS e-Archivo
RD 3 jul. 2024