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1篇 您的检索式:作者名="E.W.Plummer"
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1Electronic Phase Transition of IrTe_2 Probed by Second Harmonic Generation显示文摘We have utilized second harmonic generation(SHG) to disentangle the coupled first-order charge order/structural transition at T_c^281 K in the transition-metal dichalocogenide IrTe_2, an exceptional layered material with 3D properties. The data from SHG shows extremely sharp transition in both the cooling and warming processes with less than 0.2 K transition window. Surface electronic symmetries of C_(3ν) and S_2 are observed in the high temperature and low temperature phases, respectively. Compared to neutron diffraction data for the structural transition(Phys. Rev. B 88(2013) 115122) and to the electrical resistivity for the microscopic transition(Phys.Rev. B 95(2017) 035148), our data indicates the electronic transition at the surface is the precursor to the structural transition.J.E.Taylor Z.Zhang G.Cao L.H.Haber R.Jin E.W.Plummer 2018Chinese Physics Letters2018,35,9:0
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