Study of New Electronic and Phononic Systems with Flat-Bands Made byA New Constructive Method
| Project/Area Number |
17540352
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Niigata University |
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Principal Investigator |
GODA Masaki Niigata University, Institute of Science and Technology, Professor (60018835)
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| Co-Investigator(Kenkyū-buntansha) |
NISHINO Shinya Hokkaido University, Graduate School of Engineering, COE Research Fellow (50431325)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥180,000)
Fiscal Year 2007: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2006: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2005: ¥1,200,000 (Direct Cost: ¥1,200,000)
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| Keywords | Flat-Band / New Constructive Method of Flat-Band / Anderson Transition / Inverse Anderson Transition / Lattice Dynamics of Phonons with Flat-Band / Ideal Deformable Solids / Acoustic Phonons with Parabolic Dispersion Relation / Insulator of Acoustic Phonons |
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| Research Abstract |
(1) IPR analysis and f(α) analysis of peculiar electronic states in a random system made from triply-degenerated orbits on honeycomb lattice wit flat-band.
We found the details of the peculiar states and found that they do not depend on the strength of disorder when we decrease it toward zero.
(2) Anomalous properties of acoustic phonons in 1-and 2-dimensional disordered systems made from anomalous solids with parabolic Frequency-wavenumber dispersion relations.
We found a strong localization of the acoustic phonons in a low-frequency region in the ea CPS of 1- and 2-dimensions.
The strong localization of sound wave comes from the vanishing of the group velocity of the original periodic systems.
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Report
(4 results)
Research Products
(18 results)
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[Journal Article] Anomalous, Sound Propagation in A Solid with A Special Acoustic Phonon Dispersion Relation2007
Author(s)
Masaki GODA, Manabu, OKAMURA, Shinya, NISHINO, Shota, OKUI, Ryo, TANAKA, Miku, KUDO
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Journal Title
J. Phys. : Conference Series 92
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Presentation] 1次元特異格子の音波の伝導2007
Author(s)
合田正毅、奥井翔太、岡村学、西野信也
Organizer
日本物理学会 第62回年次大会
Place of Presentation
北海道大学
Year and Date
2007-09-23
Description
「研究成果報告書概要(和文)」より
Related Report
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[Presentation] 1次元特異格子の音波の伝導2007
Author(s)
合田, 正毅, 奥井, 翔太, 岡村, 学, 西野, 信也
Organizer
日本物理学会第62回年次大会
Place of Presentation
北海道大学
Year and Date
2007-09-23
Description
「研究成果報告書概要(欧文)」より
Related Report
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[Presentation] Anomalous Sound Propagation in A Solid with A Special Acoustic Phonon Dispersion Relation2007
Author(s)
Masaki, GODA, Manabu, OKAMURA, Shinya, NISHINO, Shota, OKUI, Ryo, TANAKA, Miku, KUDO
Organizer
Int. Conf PHONONS2007
Place of Presentation
Paris
Year and Date
2007-07-17
Description
「研究成果報告書概要(欧文)」より
Related Report
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