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2018 Volume 35 Issue 9
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J.E.Taylor, Z.Zhang, G.Cao, L.H.Haber, R.Jin, E.W.Plummer. 2018: Electronic Phase Transition of IrTe2 Probed by Second Harmonic Generation, Chinese Physics Letters, 35(9): 62-65. doi: 10.1088/0256-307X/35/9/097102
Citation: J.E.Taylor, Z.Zhang, G.Cao, L.H.Haber, R.Jin, E.W.Plummer. 2018: Electronic Phase Transition of IrTe2 Probed by Second Harmonic Generation, Chinese Physics Letters, 35(9): 62-65. doi: 10.1088/0256-307X/35/9/097102
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Electronic Phase Transition of IrTe2 Probed by Second Harmonic Generation

  • Department of Physics & Astronomy, Louisiana State University, LA 70803, USA

  • Department of Chemistry, Louisiana State University, LA 70803, USA

  • Available Online: 01/01/2018
  • Fund Project: the National Science Foundation under Grant No DMR-1504226
  • We have utilized second harmonic generation (SHG) to disentangle the coupled first-order charge order/structural transition at Tc ～ 281 K in the transition-metal dichalocogenide IrTe2,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 C3v and S2 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.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Electronic Phase Transition of IrTe2 Probed by Second Harmonic Generation

  • Available Online: 01/01/2018

Abstract: We have utilized second harmonic generation (SHG) to disentangle the coupled first-order charge order/structural transition at Tc ～ 281 K in the transition-metal dichalocogenide IrTe2,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 C3v and S2 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.

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