Revealing Charge Density Wave Formation in the LaTe2 System byAngle Resolved Photoemission Spectroscopy

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We present the first direct study of charge density wave(CDW) formation in quasi-2D single layer LaTe2 using high-resolutionangle resolved photoemission spectroscopy (ARPES) and low energy electrondiffraction (LEED). CDW formation is driven by Fermi surface (FS)nesting, however characterized by a surprisingly smaller gap (~;50 meV)than seen in the double layer RTe3 compounds, extending over the entireFS. This establishes LaTe2 as the first reported semiconducting 2D CDWsystem where the CDW phase is FS nesting driven. In addition, the layerdependence of this phase in the tellurides and the possible transitionfrom a stripe to a checkerboard phase is discussed.

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Garcia, D. R.; Gweon, G.-H.; Zhou, S. Y.; Graf, J.; Jozwiak, C. M.; Jung, M. H. et al. November 15, 2006.

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We present the first direct study of charge density wave(CDW) formation in quasi-2D single layer LaTe2 using high-resolutionangle resolved photoemission spectroscopy (ARPES) and low energy electrondiffraction (LEED). CDW formation is driven by Fermi surface (FS)nesting, however characterized by a surprisingly smaller gap (~;50 meV)than seen in the double layer RTe3 compounds, extending over the entireFS. This establishes LaTe2 as the first reported semiconducting 2D CDWsystem where the CDW phase is FS nesting driven. In addition, the layerdependence of this phase in the tellurides and the possible transitionfrom a stripe to a checkerboard phase is discussed.

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  • Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 16; Related Information: Journal Publication Date: 04/20/2007

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  • Report No.: LBNL--62660
  • Grant Number: DE-AC02-05CH11231
  • Grant Number: NSF:DMR03-49361
  • Office of Scientific & Technical Information Report Number: 923419
  • Archival Resource Key: ark:/67531/metadc898886

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  • November 15, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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  • Oct. 3, 2017, 2:02 p.m.

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Garcia, D. R.; Gweon, G.-H.; Zhou, S. Y.; Graf, J.; Jozwiak, C. M.; Jung, M. H. et al. Revealing Charge Density Wave Formation in the LaTe2 System byAngle Resolved Photoemission Spectroscopy, article, November 15, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc898886/: accessed November 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.