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    Dimensional Effects on the Charge Density Waves in Ultrathin Films of TiSe 2
    with P. Chen, Y. H. Chan, M. H. Wong, X. Y. Fang, M. Y. Chou, S. K. Mo, A. V. Fedorov, and T. C. Chiang
    © 2016 American Chemical Society.Charge density wave formation in solids is a critical phenomenon involving the collective reorganization of the electrons and atoms in the system into a wave structure, and it is expected to be sensitive to the geometric constraint of the system at the nanoscale. Here, we study the CDW transition in TiSe2, a quasi-two-dimensional layered material, to determine the effects of quantum confinement and changing dimensions in films ranging from a single layer to multi…Read more
  •  1
    Spin-resolved photoemission study of epitaxially grown MoSe 2 and WSe 2 thin films
    with S. K. Mo, C. Hwang, Y. Zhang, M. Fanciulli, S. Muff, Hugo Dil J., and Z. X. Shen
    © 2016 IOP Publishing Ltd.Few-layer thick MoSe2 and WSe2 possess non-trivial spin textures with sizable spin splitting due to the inversion symmetry breaking embedded in the crystal structure and strong spin-orbit coupling. We report a spin-resolved photoemission study of MoSe2 and WSe2 thin film samples epitaxially grown on a bilayer graphene substrate. We only found spin polarization in the single-and trilayer samples-not in the bilayer sample-mostly along the out-of-plane direction of the sam…Read more