000204020 001__ 204020
000204020 005__ 20181203023717.0
000204020 0247_ $$2doi$$a10.1063/1.4901994
000204020 022__ $$a0021-8979
000204020 02470 $$2ISI$$a000345513700011
000204020 037__ $$aARTICLE
000204020 245__ $$aComposition dependent lattice dynamics in MoSxSe(2-x) alloys
000204020 260__ $$bAmer Inst Physics$$c2014$$aMelville
000204020 269__ $$a2014
000204020 300__ $$a7
000204020 336__ $$aJournal Articles
000204020 520__ $$aWe report on room temperature, polarization-resolved Raman scattering measurements on layered crystals of the series MoSxSe(2-x) (0 <= x <= 2) grown by chemical vapor transport technique. The results reveal two distinct sets of features related to the E-2g(1) and A(1g) modes of pure members of series. As composition x changes, the in-plane E-2g(1) mode shows two-mode behavior, whereas the out-of-plane A1g mode presents more complex evolution. The MoSe2-like branch reveals the splitting associated with the altering arrangement of S and Se atoms around Mo and the resulting changes in the dipole moment of the molecule. The X-ray diffraction measurements confirm that the samples are single-phase materials of 2H-type structure over the entire range of the sulfide composition x, while the scanning transmission electron microscopy imaging reveals a random arrangement of the S and Se atoms. Modified random-element-isodisplacement model is adopted to predict the behavior of the individual modes in the alloys. The model successfully confirms the two-mode behavior exhibited by the MoSxSe(2-x) series. (C) 2014 AIP Publishing LLC.
000204020 700__ $$uNatl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan$$aJadczak, J.
000204020 700__ $$uNatl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan$$aDumcenco, D. O.
000204020 700__ $$uNatl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan$$aHuang, Y. S.
000204020 700__ $$uNatl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058969, Japan$$aLin, Y. C.
000204020 700__ $$uNatl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058969, Japan$$aSuenaga, K.
000204020 700__ $$uNatl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan$$aWu, P. H.
000204020 700__ $$uMing Chi Univ Technol, Dept Elect Engn, Taipei 243, Taiwan$$aHsu, H. P.
000204020 700__ $$aTiong, K. K.
000204020 773__ $$j116$$tJournal Of Applied Physics$$k19
000204020 909C0 $$xU10318$$0252445$$pIEL
000204020 909CO $$pSTI$$particle$$ooai:infoscience.tind.io:204020
000204020 937__ $$aEPFL-ARTICLE-204020
000204020 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000204020 980__ $$aARTICLE