Optical properties of single-layer graphene

• Measurement of the optical conductivity of graphene. K. F. Mak, M. Y. Sfeir, Y. Wu, C. H. Lui, J. A. Misewich, and T. F. Heinz, Phys. Rev. Lett. 101, 196405 (2008).
• Optical spectroscopy of graphene: From the far infrared to the ultraviolet. K. F. Mak, L. Ju, F. Wang, and T. F. Heinz, Solid State Commun. 152, 1341-1349 (2012).
• Observation of intra- and inter-band transitions in the optical response of graphene. L. M. Malard, K. F. Mak, A. H. Castro Neto, N. M. R. Peres, and T. F. Heinz, New J. Phys. 15, 015009 (2013).
• High-contrast electro-optic modulation of a photonic cavity nanocavity by electrical gating of graphene. X. Gan, R. J. Shiue, Y. Gao, K. F. Mak, X. Yao, L. Li, A. Szep, D. Walker Jr., J. Hone, T. F. Heinz, and D. Englund, Nano Lett. 13, 691-696 (2013).
• Strong enhancement of light-matter interaction in graphene coupled to a photonic crystal nanocavity. X. Gan, K. F. Mak, Y. Gao, Y. You, F. Hatami, J. Hone, T. F. Heinz, and D. Englund, Nano Lett. 12, 5626-5631 (2012).

Many-body effects in graphene

• Tuning many-body interactions in graphene: The effects of doping on excitons and carrier lifetimes. K. F. Mak, F. Jornada, K. He, N. Petrone, J. Hone, J. Shan, S. G. Louie, and T. F. Heinz, Phys. Rev. Lett. 112, 207401 (2014).
• Seeing many-body effects in single- and few-layer graphene: Observation of two-dimensional saddle-point excitons. K. F. Mak, J. Shan, and T. F. Heinz, Phys. Rev. Lett. 106, 046401 (2011).

Band gap tuning

• Observation of an electric-field-induced band gap in bilayer graphene by infrared spectroscopy. K. F. Mak, C. H. Lui, J. Shan, and T. F. Heinz, Phys. Rev. Lett. 102, 256405 (2009).
• Observation of an electrically tunable band gap in trilayer graphene. C. H. Lui, Z. Li, K. F. Mak, E. Cappelluti, and T. F. Heinz, Nature Phys. 7, 944-947 (2011).

Few-layer graphene:
electronic and vibrational properties

• Electronic structure of few-layer graphene: Experimental demonstration of strong dependence on stacking sequence. K. F. Mak, J. Shan, and T. F. Heinz, Phys. Rev. Lett. 104, 176404 (2010).
• The evolution of electronic structure in few-layer graphene revealed by optical spectroscopy. K. F. Mak, M. Y. Sfeir, J. A. Misewich, and T. F. Heinz, Proc. Nat. Acad. Sci. 107, 14999 – 15004 (2010).
• Real-time observation of interlayer vibrations in bilayer and few-layer graphene. D. Boschetto, L. Malard, C. H. Lui, K. F. Mak, Z. Li, H. Yan, and T. F. Heinz, Nano Lett. 13, 4620-4623 (2013).
• Structurally dependent Fano resonances in the infrared spectra of phonons in few-layer graphene. Z. Li, C.H. Lui, E. Cappelluti, L. Benfatto, K. F. Mak, G. L. Carr, J. Shan, and T. F. Heinz, Phys. Rev. Lett. 108, 156801 (2012).

Non-equilibrium properties of graphene

• Measurement of the thermal conductance of the graphene/SiO₂ interface. K. F. Mak, C. H. Lui, and T. F. Heinz, Appl. Phys. Lett. 97, 221904 (2010).
• Ultrafast photoluminescence from graphene. C. H. Lui, K. F. Mak, J. Shan, and T. F. Heinz, Phys. Rev. Lett. 105, 127404 (2010).
• Electron and optical phonon temperatures in electrically biased graphene. S. Berciaud, M. Y. Han, K. F. Mak, L. E. Brus, P. Kim, and T. F. Heinz, Phys. Rev. Lett. 104, 227401 (2010),
• Time-resolved Raman spectroscopy of optical phonons in graphite: phonon anharmonic coupling and anomalous stiffening. H. Yan, D. Song, K. F. Mak, I. Chatzakis, J. Maultzsch, and T. F. Heinz, Phys. Rev. B 80, 121403(R) (2009).