[Th-P2-B] Emerging phenomena in 2D materials

5:15 PM - 5:30 PM JST(8:15 AM - 8:30 AM UTC)

[Th-P2-B-06] Thermal Conductivity Measurement of Suspended Graphene with Optical-Interference Corrected Optothermal Raman Spectroscopy

〇Ibrahim Arsy^1,2, Jakob Ziewer¹, Mike Hardy¹, Robert M. Bowman¹ (1. Queen's Univ. Belfast (UK), 2. The Univ. of Glasgow (UK))

Optothermal Raman spectroscopy of suspended monolayer graphene is corrected for interference effects using transfer-matrix modelling with Gaussian numerical-aperture averaging. The correction reduces effective absorption and yields a thermal conductivity of ~2,400 W m^-1 K^-1, significantly lower than with conventional models.