X.-G. Li, H. Chen, C. F. Zhu, H. D. Zhou, R. K. Zheng, J. H. Zhang, and L. Chen, Ultrasonic study on charge ordering, magnetic and structural changes in La_0.25Ca_0.75Mn_0.93Cr_0.07O₃, Appl. Phys. Lett. 76( 2000)1173.

X.-G. Li, X. Zhao, X. J. Fan, X. F. Sun, W. B. Wu and H. Zhang, Doping dependence of the Josephson coupling in Bi₂Sr₂Ca_1-xGd_xCu₂O_8+δ single crystals, Appl. Phys. Lett. 76( 2000)3088

X. J. Fan, S. Q. Shen, Z. D. Wang, X.-G. Li and Q. H. Wang, Hole dispersions in the G- and C-type orbital ordering backgrounds: Doped manganese oxides, Phys. Rev. B 62 (2000)3896

X. F. Sun, X. Zhao, L. Wang, Q. F. Zhou, W. B. Wu, and X.-G. Li, Nonequivalence of the anisotropy in the normal state to that in the superconducting state of Bi₂Sr₂Ca(Cu_1-xM_x)₂O_y (M=Mn, Fe, Co, and Ni), Phys. Rev. B 62(2000)11384

X.-G. Li, X. F. Sun, X. J. Fan, X. Zhao, W. B. Wu, Pr-doping effect on the depinning of vortices in Bi₂Sr₂Ca_1-xPr_xCu₂O_y single crystals, J. Appl. Phys. 87( 2000)5567.

X. J. Fan, W. G. Yin, X. G. Li, C. D. Gong, Quasiparticle bands in plane-chain coupled cooperates, European Physical Journal B 13(2000)5.

X. Zhao, X. F. Sun, L. Wang, Q. F. Zhou, W. B. Wu, X.-G. Li, Growth and characterization of Bi₂Sr₂Ca_1-xGd_xCu₂O_y single crystals by self-flux method, Physica C336( 2000)131

X. J. Fan, X. F. Sun, J. Zhang, X. Zhao, and X. G. Li, Temperature dependence of vortex pinning in Re-doped HgBa₂Ca₂Cu_2.9Re_0.1O_y, Physica C 341-348 (2000)1161-1162

X.-G. Li, X.F. Sun, X. Zhao, X.J. Fan and W.B. Wu, Study on the pseudo-superconducting transition induced by Josephson coupling in Bi₂Sr₂Ca_1-xGd_xCu₂O_8+δ crystals, Physica C341-348 (2000)2053-2054

Y.L. Tang, N.L. Chen, D.W. Lu, X. Jin and X.G. Li, Magnetic hysteresis and pinning properties of HTSC, Physica C 341-348 (2000) 1363-1364

C. S. Xiong, L. Pi, Y. H. Xiong, Y. B. Jia, G. E. Zhou, Z. P. Jian, and X.-G. Li, The preparation and demonstration of epitaxial La_0.67Sr_0.33MnO₃ films/((110) orientation), Solid State Commun. 114(2000)341

J. H. Zhang, X. J. Fan, C. S. Xiong and X.-G. Li, Fe Doping Effects on the Magnetic and Transport Properties in La_0.67Sr_0.33Mn_1-xFe_xO₃, Solid State Commun.115(2000)531