Title :
Dynamic zero balance of the oscillator-strength sum in graphene
Author :
Jaeseok Kim ; Seongchu Lim ; Inhee Maeng ; Younghwan Choi ; Taeyong Kim ; Young Hee Lee ; Hyunyong Choi
Author_Institution :
Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We investigate the relativistic zero balance of the oscillator strength sum rule in a single-layer graphene. The full energy-dependent characteristics are studied by ultrafast THz spectroscopy to probe the low-energy quasi-free absorption oscillator in conjunction with ultrafast optical spectroscopy to investigate the high-energy oscillator near Fermi level.
Keywords :
Fermi level; graphene; high-speed optical techniques; oscillator strengths; terahertz wave spectra; C; Fermi level; dynamic zero balance; full energy-dependent characteristics; low-energy quasi-free absorption oscillator; oscillator strength sum rule; single-layer graphene; ultrafast THz spectroscopy; ultrafast optical spectroscopy; Conductivity; Graphene; Optical pumping; Oscillators; Probes; Spectroscopy; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2013 Conference on
Conference_Location :
San Jose, CA
