2024-03-28T19:26:03Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/602202022-11-17T02:08:08Zhdl_2115_20045hdl_2115_139Symmetry-dependent carrier relaxation dynamics and charge-density-wave transition in DyTe3 probed by polarized femtosecond spectroscopyTsuchiya, S.Sugawara, Y.Tanda, S.1000000313106Toda, Y.open accessCreative Commons Attribution 3.0 Unportedtime resolved reflection spectroscopycharge-density-wave systemsoptical properties425Photo-induced quasi-particle (QP) relaxation dynamics with different symmetries have been investigated for the multiple charge-density-wave (CDW) compound DyTe3 by using ultrafast polarized pump-probe spectroscopy. By performing symmetry analysis, the QP dynamics with isotropic A(1g) and anisotropic B-2g symmetry were found to show unique anomalies at the first and second CDW transitions. Both the temperature dependence and pump fluence dependence indicate that the B-2g response is very sensitive to the underlying lattice deformation, which provides critical insight into the multiple CDW formations.IOP Publishing2015-08engjournal articleVoRhttp://hdl.handle.net/2115/60220https://doi.org/10.1088/2040-8978/17/8/0855012040-8978Journal of optics17885501https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/60220/1/pdf.pdfapplication/pdf841.7 KB2015-08