Elucidation of the formation mechanisms of epitaxial silicene

• Project/Area Number: 26790005
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nanostructural physics
• Research Institution: Japan Advanced Institute of Science and Technology
• Principal Investigator: Fleurence Antoine 北陸先端科学技術大学院大学, マテリアルサイエンス研究科, 助教 (30628821)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: シリセン / 走査トンネル顕微鏡 / 二次元材料

Outline of Final Research Achievements

In reason of their flexibility and their low-dimensionality that allows for the miniaturization of the devices, two-dimensional materials are of high interest for applications in electronics. Silicene is a recently discovered two-dimensional form of silicon with great expectation for applications owing to the electronic properties originating from its buckled structure. However, silicene needs to be stabilized by a substrate and was observed only on top of a very few number of conductive materials, that hinders its use in electronic devices. The spontaneous formation of silicene on top of Zr diboride thin films grown on Si(111) was investigated in order to get hints on the surface properties required to synthetize silicene on insulating substrates. This form of silicene is also a perfect template to study the thermal stability of silicene. The temperature dependence of its structure gave very insightful information on the mechanical properties of silicene deriving from the buckling.

Research Products

• [Int'l Joint Research] IBM(米国)
• [Journal Article] Single-domain epitaxial silicene on diboride thin films (2016)
  • Author(s): Antoine Fleurence, Tobias G. Gill, Rainer Friedlein, Jurek T. Sadowski, Kohei Aoyagi, Matt Copel, Ruud. M. Tromp, Cyrus F. Hirjibehedin and Y. Yamada-Takamura1
  • Journal Title: Applied Physics Letters Volume: １０８ Issue: 15 Pages: 15190211519025-15190211519025
  • DOI: 10.1063/1.4945370
  • NAID: 120005893621
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Avoiding critical-point phonon instabilities in two-dimensional materials: The origin of the stripe formation in epitaxial silicene (2014)
  • Author(s): C.-C. Lee, A. Fleurence, R. Friedlein, Y. Yamada-Takamura, and T. Ozaki
  • Journal Title: Phys. Rev. B Volume: 90 Issue: 24 Pages: 241402-241402
  • DOI: 10.1103/physrevb.90.241402
  • NAID: 120005650346
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Band structure of silicene on zirconium diboride (0001) thin-film surface: Convergence of experiment and calculations in the one-Si-atom Brillouin zone (2014)
  • Author(s): C.-C. Lee, A. Fleurence, Y. Yamada-Takamura, T. Ozaki, and R. Friedlein
  • Journal Title: Phys. Rev. B Volume: 90 Issue: 7 Pages: 075422-075422
  • DOI: 10.1103/physrevb.90.075422
  • NAID: 120005526731
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Core level excitations- A fingerprint of structural and electronic properties of epitaxial silicene (2014)
  • Author(s): R. Friedlein, A. Fleurence, K. Aoyagi, M. P. de Jong, H. Van Bui, F. B. Wiggers, S. Yoshimoto, T. Koitaya, S. Shimuizu, H. Noritake, K. Mukai, J. Yoshinobu and Y. Yamada-Takamura
  • Journal Title: Journal of Chemical Physics Volume: 140 Issue: 18 Pages: 184704-184704
  • DOI: 10.1063/1.4875075
  • Peer Reviewed / Open Access
• [Presentation] Observation of Dirac electrons in germanene on diboride thin films (2016)
  • Author(s): Antoine Fleurence, Rainer Friedlein, Hiroyuki Yamane, Howon Kim, Yuuto Awatani, Shinya Yoshimoto, Kozo Mukai, Takanori Koitaya, Yukio Hasegawa, Jun Yoshinobu, Nobuhiro Kosugi and Yukiko Yamada-Takamura
  • Organizer: American Physical Society March Meeting 2016
  • Place of Presentation: Convention Center, Baltimore, Maryland, U.S.A.
  • Year and Date: 2016-03-14
  • Int'l Joint Research
• [Presentation] Formation of silicene-germanene heterostructures by Ge deposition on epitaxial silicene (2016)
  • Author(s): Yuto Awatani, Antoine Fleurence and Yukiko Yamada-takamura
  • Organizer: American Physical Society March Meeting 2016
  • Place of Presentation: Convention Center, Baltimore, Maryland, U.S.A.
  • Year and Date: 2016-03-14
  • Int'l Joint Research
• [Presentation] Cobalt on silicene/ZrB2: an intriguing Kondo system (2016)
  • Author(s): Tobias Gill, Ben Warner, Henning Pruser, Antoine Fleurence, Yukiko Yamada-Takamura, Cyrus Hirjibehedin
  • Organizer: American Physical Society March Meeting 2016
  • Place of Presentation: Convention Center, Baltimore, Maryland, U.S.A.
  • Year and Date: 2016-03-14
  • Int'l Joint Research
• [Presentation] Silicene and Germanene on ZrB2(0001) (2015)
  • Author(s): Antoine Fleurence
  • Organizer: Seminar at Ecole Centrale de Lyon
  • Place of Presentation: Ecole Centrale de Lyon, Lyon, France
  • Year and Date: 2015-11-24
  • Invited
• [Presentation] Temperature- and Si deposition-dependence of epitaxial silicene on ZrB2(0001) (2015)
  • Author(s): Antoine Fleurence
  • Organizer: Superstripes Conferences
  • Place of Presentation: Ischia, Italy
  • Year and Date: 2015-06-13
  • Invited
• [Presentation] Temperature-dependent phase transitions in epitaxial silicene on ZrB2(0001) (2015)
  • Author(s): A. Fleurence, and Y. Yamada-Takamura
  • Organizer: American Physical Society 2015 March Meeting
  • Place of Presentation: San Antonio, U.S.A
  • Year and Date: 2015-03-02 – 2015-03-06
• [Presentation] Structural and electronic properties of 2D Si layers formed by deposition of Si on silicene/ZrB2 (2015)
  • Author(s): C. F. Hirjibehedin, T. G. Gill, B. Warner, H. Prueser, K. Aoyagi, R. Friedlein, A. Fleurence, J. T. Sadowski and Y. Yamada-Takamura
  • Organizer: American Physical Society 2015 March Meeting
  • Place of Presentation: San Antonio, U.S.A
  • Year and Date: 2015-03-02 – 2015-03-06
• [Presentation] Epitaxial silicene on ZrB2(0001) : a graphene-like form of silicon (2014)
  • Author(s): A. Fleurence
  • Organizer: 22nd International Colloquium on Scanning Probe Microscopy (ICSPM22)
  • Place of Presentation: 熱川ハイツ（静岡県・東伊豆町）
  • Year and Date: 2014-12-11 – 2014-12-13
  • Invited
• [Presentation] Mono- and Multi-Layer Silicene Surfaces Grown on ZrB2 (2014)
  • Author(s): T. G. Gill, A Fleurence, J.T. Sadowski, C. F. Hirjibehedin, andY. Yamada- Takamura
  • Organizer: The 2nd International Symposium on the Functionality of Organized Nanostructures 2014 (FON'14)
  • Place of Presentation: 日本科学未来館（東京都・江東区）
  • Year and Date: 2014-11-27 – 2014-11-28
• [Presentation] Epitaxial silicene on ZrB2(0001) : a graphene-like form of silicon (2014)
  • Author(s): A. Fleurence
  • Organizer: 73rd International Union for Vacuum Science Techniques and Applications (IUVSTA 73)
  • Place of Presentation: Eisenertz (Austria)
  • Year and Date: 2014-09-22 – 2014-09-26
  • Invited
• [Presentation] Spontaneous formation of silicene on ZrB2 buffer layers (2014)
  • Author(s): A. Fleurence
  • Organizer: Superstripes Conference 2014
  • Place of Presentation: Erice (Italy)
  • Year and Date: 2014-07-25 – 2014-07-31
  • Invited
• [Presentation] Spontaneous formation of silicene on ZrB2 buffer layers (2014)
  • Author(s): A. Fleurence
  • Organizer: The 4th International meeting on silicene
  • Place of Presentation: Beijing (China)
  • Year and Date: 2014-06-11 – 2014-06-14
  • Invited
• [Book] Silicene: Structure, Properties and Applications (2016)
  • Author(s): Antoine Fleurence
  • Total Pages: 27
  • Publisher: Springer