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|Title: ||Synthesis and Physical Properties of the New Oxybismuthides BaTi2Bi2O and (SrF)2Ti2Bi2O with a d1 Square Net|
|Authors: ||Yajima, T|
|Issue Date: ||11-Dec-2012|
|Publisher: ||Physical Society of Japan|
|Citation: ||Yajima, T., Nakano, K., Takeiri, F., Hester, J., Yamamoto, T., Kobayashi, Y., Tsuji, N., Kim, J., Fujiwara, A., Kageyama, H. (2013). Journal of Physical Society of Japan, 82(1), Article Number 013703.|
|Abstract: ||We have recently reported the d(1) square-lattice compound BaTi(2)Sb(2)O, which shows superconductivity at T(c) = 1.2K coexisting with a charge- or spin-density wave (CDW/SDW) state. Here, we successfully prepared two new oxybismuthides, BaTi(2)Bi(2)O and (SrF)(2)Ti(2)Bi(2)O, as the first Pn = Bi compounds in the ATi(2)Pn(2)O family. The CDW/SDW state disappeared for both compounds, presumably owing to the considerable interaction between the Ti-3d and Bi-6s orbitals. The complete suppression of the CDW/SDW instability resulted in an enhanced T(c) of 4.6 K for BaTi(2)Bi(2)O. However, (SrF)(2)Ti(2)Bi(2)O exhibits no superconductivity, suggesting the importance of the interlayer interaction for superconductivity. © 2012, Physical Society of Japan|
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