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    Title: Professor Member: Joint-Appointment Faculty
    Name: Cheng-Hsuan Chen Eduction: Ph. D., Cornell University (1974)
    NTU AH: http://www.ntu-ccms.ntu.edu.tw/99ccms/chinese/home.html
    Room: R1123
    Tel1(1): (02) 3366-5200
    E-Mail(1): E-Mail(2):
    1. Physics of colossal magnetoresistive (CMR) transition metal oxides: charge ordering, ferromagnetism with double exchange, and nanoscale electronic phase separations.
    2. Electron diffraction and transmission electron microscopy (TEM) at low temperatures: low temperature applications of TEM for various phase ransitions.
    3. Electron energy-loss spectroscopy using a nanoprobe in a scanning TEM (STEM): studies of local electronic structures of nano-materials with spatial resolution of 0.1 nm.
    4. Structural phase transitions driven by electronic instabilities: Charge density waves and spin Peierls transition.
    (1) S. Mori, C. H. Chen and S-W. Cheong, 1998, “Paired Jahn-Teller Stripes: Basic Building Block in Charge-Ordered (La,Ca)MnO3”, Nature 392, 473

    (2) S-W. Cheong and C. H. Chen, 1998, “Striped Charge and Orbital Ordering in Perovskite Manganites”, a book chapter in Colossal Magnetoresistance and Related Properties, ed. B. Raveau and C. N. R. Rao, World Scientific Publishing Co.

    (3) C. H. Chen, S. Mori and S-W. Cheong, 1999, “Anomalous Melting Transition of Charge-Ordered State in Manganites”, Phys. Rev. Lett. 83, 4792.

    (4) M. Uehara, S. Mori, C. H. Chen and S-W. Cheong, 1999, “Percolative Phase Separation underlies Colossal Magnetoresistance in Mixed-Valent Manganites”, Nature 399, 560.

    (5) P. G. Radealli, Y. Horibe, M. J. Gutmann, H. Ishibashi, C. H. Chen, R. M. Ibberson, Y. Koyama, Y-S. Hor, V. Kiryuhkin and S-W. Cheong, 2002, “Formation of Isomorphic Ir3+ and Ir4+ Octamers and Spin Dimerization in the Spinel CuIr2S4”, Nature 416, 155.