Gao Ren-Xi, Gao Sheng-Ying, Fan Guang-Hua, Liu Jie, Wang Qiang, Zhao Hai-Feng, Qu Shi-Liang. Enhancement of surface photoconductivityin 6H-silicon carbide crystal modified by femtosecond laser pulse irradiationJ. Acta Physica Sinica, 2014, 63(6): 067801. DOI: 10.7498/aps.63.067801