4Cao J C, Lei X L, Li A Z, et al. Spectrum dynamics of negative - effective - mass oscillators under terahertz radiation [J]. Appl Phys Lett, 2001, 78: 2524-2526.
5Cao J C, Li A Z, Lei X L, et al. Current self - oscillation and driving - frequency dependence of negative - effec -tire - mass diodes [J]. Appl Phys Lett, 2001, 79:3524 - 3526.
6Cao J C, Lu H C, Lei X L, et al. Chaotic dynamics in terahertz -driven semiconductors with negative effective mass [J]. Phys Rev B, 2001, 63:115308 - 1 -115308 - 12.
7Cao J C, Lei X L. Balance -equation approach to impact ionization induced by an intense terahertz radiation:Application to InAs/AISb heterojunctions [J]. Euro Phys J B, 2002, 29:553-559.
8Cao J C, Lei X L. Muhiphoton - assisted absorption of terahertz radiation in InAs/AlSb heterojunctions [J]. Phys Rev B, 2003, 67: 085309- 1-085309-5.
9Liu H C, Song C Y, Wasilewski Z R, et al. Coupled electron -phonon modes in optically pumped resonantin tersubband lasers [J]. Phys Rev Lett, 2003, 90:077402 - 1 - 077402 - 4.
10Fujita M, Toyoda T, Cao J C, et al. Induced chargedensity oscillation under a quantizing magnetic field and intense terahertz radiation [J]. Phys Rev B, 2003, 67075105 - 1 - 075105 - 5.