Three-Dimensional Fermi-Surface Nesting in 1T-VSe_2 Studied by Angle-Resolved Photoemission Spectroscopy(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) with synchrotron radiation on layered transition-metal dichalcogenide 1T-VSe_2 to study the mechanism of the three-dimensional charge-density-wave (CDW) transition We found that the Fermi surface around the M (L) and K (H) points shows considerable wiggling along the wave vector normal to the layer (k_z) despite the apparently two-dimensional crystal structure. ARPES spectra below the CDW transition temperature show a signature of pseudogap opening at a specific k_z-region on the Fermi surface, demonstrating that the CDW transition of 1T-VSe_2 is driven by three-dimensional Fermi-surface nesting.
- 社団法人日本物理学会の論文
- 2004-12-15
著者
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TAKAHASHI Takashi
Department of General Medicine, Kanazawa Medical University
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Matsui Hiroaki
Frontier Research Center Tokyo Institute Of Technology:erato-sort Jst In Frontier Research Center To
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Hirano Masahiro
Erato-sorst Jst In Frontier Research Center Tokyo Institute Of Technology
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Sato Takafumi
Department Of Chemical Engineering Tohoku University
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TERASHIMA Kensei
Department of Physics, Tohoku University
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MATSUI Hiroaki
Department of Physics, Tohoku University
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SOUMA Seigo
Department of Physics, Tohoku University
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YANG Hongbo
Department of Physics, Boston College
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WANG Shancai
Department of Physics, Boston College
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DING Hong
Department of Physics, Boston College
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MAEDA Nobuhiro
Okayama University of Science
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HAYASHI Koya
Okayama University of Science
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Hirano Masahiro
Frontier Research Center Tokyo Institute Of Technology:erato-sort Jst In Frontier Research Center To
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Sato Takafumi
Department Of Applied Chemistry Utsunomiya University
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Sato T
Department Of Physics Tohoku University
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Ding Hong
Department Of Physics Boston College
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Ding Hong
Department Of Gastroenterology And Hepatology Kinki University School Of Medicine
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Yang Hongbo
Department Of Physics Boston College
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Wang S
Inst. Metal Res. Chinese Acad. Sci. Shenyang Chn
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Terashima K
Department Of Physics Tohoku University
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Takahashi Takashi
Department Of Applied Chemistry Tokyo Institute Of Technology
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Wang Shancai
Department Of Physics Boston College
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Matsui Hiroaki
Department Of Bioscience & Technology Faculty Of Science & Engineering Ritsumeikan Universit
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