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Persistent Charge-Density-Wave Order in Single-Layer TaSe2.
Ryu, Hyejin; Chen, Yi; Kim, Heejung; Tsai, Hsin-Zon; Tang, Shujie; Jiang, Juan; Liou, Franklin; Kahn, Salman; Jia, Caihong; Omrani, Arash A; Shim, Ji Hoon; Hussain, Zahid; Shen, Zhi-Xun; Kim, Kyoo; Min, Byung Il; Hwang, Choongyu; Crommie, Michael F; Mo, Sung-Kwan.
Afiliación
  • Ryu H; Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
  • Chen Y; Max Planck POSTECH Center for Complex Phase Materials, Pohang University of Science and Technology , Pohang 37673, Korea.
  • Kim H; Department of Physics, University of California , Berkeley, California 94720, United States.
  • Tsai HZ; Department of Physics, Pohang University of Science and Technology , Pohang 37673, Korea.
  • Tang S; Department of Physics, University of California , Berkeley, California 94720, United States.
  • Jiang J; Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
  • Liou F; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States.
  • Kahn S; Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
  • Jia C; Department of Physics, University of California , Berkeley, California 94720, United States.
  • Omrani AA; Department of Physics, University of California , Berkeley, California 94720, United States.
  • Shim JH; Department of Physics, University of California , Berkeley, California 94720, United States.
  • Hussain Z; Henan Key Laboratory of Photovoltaic Materials and Laboratory of Low-dimensional Materials Science, Henan University , Kaifeng 475004, People's Republic of China.
  • Shen ZX; Department of Physics, University of California , Berkeley, California 94720, United States.
  • Kim K; Department of Physics, Pohang University of Science and Technology , Pohang 37673, Korea.
  • Min BI; Department of Chemistry and Division of Advanced Nuclear Engineering, Pohang University of Science and Technology , Pohang 37673, Korea.
  • Hwang C; Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
  • Crommie MF; Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory , Menlo Park, California 94025, United States.
  • Mo SK; Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University , Stanford, California 94305, United States.
Nano Lett ; 18(2): 689-694, 2018 02 14.
Article en En | MEDLINE | ID: mdl-29300484
ABSTRACT
We present the electronic characterization of single-layer 1H-TaSe2 grown by molecular beam epitaxy using a combined angle-resolved photoemission spectroscopy, scanning tunneling microscopy/spectroscopy, and density functional theory calculations. We demonstrate that 3 × 3 charge-density-wave (CDW) order persists despite distinct changes in the low energy electronic structure highlighted by the reduction in the number of bands crossing the Fermi energy and the corresponding modification of Fermi surface topology. Enhanced spin-orbit coupling and lattice distortion in the single-layer play a crucial role in the formation of CDW order. Our findings provide a deeper understanding of the nature of CDW order in the two-dimensional limit.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2018 Tipo del documento: Article País de afiliación: Estados Unidos