2012 Fiscal Year Final Research Report
STM studies on magnetic field induced electronic charge order
| Project/Area Number |
22540357
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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 |
Condensed matter physics II
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| Research Institution | Hokkaido University |
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Principal Investigator |
ODA Migaku 北海道大学, 大学院・理学研究院, 教授 (70204211)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 高温超伝導 / 銅酸化物 / STM / STS / 電荷秩序 / 擬ギャップ |
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| Research Abstract |
In this research project, we performed STM/STS experiments under magnetic fields and pump-probe optical experiments in one of the typical high-Tc cuprates Bi2212 to clarify the origin of the electronic charge order accompanied by a pseudogap and its relation to the high-Tc superconductivity. STM/STS experiments suggested that the electronic charge order will be understood in terms of the charge-spin stripes model, and dynamically fluctuating in nature. In pump-probe optical experiments, furthermore, it was found that the electronic charge order and pseudogap do not only compete with but also is needed for the high-Tc superconductivity. Employing these results, we pointed out that the fluctuating stripes would be responsible for the formation of high-Tc superconductivity.
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[Journal Article] Glassy low-energy spin fluctuations and aniso- tropy gap in La1.88Sr0.12CuO42013
Author(s)
A. T. Romer, J. Chang, N. B. Christensen, K. Lefmann, L. Mahler, J. Gavilano, R. Gilardi, Ch. Niedermayer, H. M. Ronnow, A. Schneidewind, P. Link, M. Oda, M. Ido, N. Momono, and J. Mesot
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Journal Title
Phys. Rev. B
Volume: 87, (in press)
Peer Reviewed
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[Journal Article] Spin density wave induced disordering of the vortex lattice in superconducting La2-xSrxCuO42012
Author(s)
J. Chang, J. S. White, M. Laver, C. J. Bowell, S. P. Brown, A. T. Holmes, L. Maechler, S. Streassle, R. Gilardi, S. Gerber, T. Kurosawa, N. Momono, M. Oda, M. Ido, O. J. Lipscombe, S. M. Hayden, C. D. Dewhurst, R. Vavrin, J. Gavilano, J. Kohlbrecher, E. M. Forgan, and J. Mesot
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Journal Title
Phys. Rev. B
Volume: 85
Pages: 1345201-8
Peer Reviewed
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[Journal Article] The Fermi surface and band folding in La2-xSrxCuO4 probed by angle-resolved photoemission2010
Author(s)
E. Razzoli, Y. Sassa, G. Drachuck, M. Mansson, A. Keren, M. Shay, M. H. Berntsen, O. Tjernberg, M. Radovic, J. Chang, S. Pailhes, N. Momono, M. Oda, M. Ido, O. J. Lipscombe, S. M. Hayden, L. Patthey, J. Mesot, and M. Shi
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Journal Title
NEW JOURNAL OF PHYSICS
Volume: 12
Pages: 125003-8
Peer Reviewed
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[Journal Article] Large pseudogap and nodal superconducting gap in Bi2Sr2-xLaxCuO6+ and Bi_2Sr_2CaCu_2O_8+ : Scanning tunneling microscopy and spectroscopy2010
Author(s)
T. Kurosawa, T. Yoneyama, Y. Takano, M. Hagiwara, R. Inoue, N. Hagiwara, K. Kurusu, K. Takeyama, N. Momono, M. Oda, and M. Ido
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Journal Title
PHYSICAL REVIEW B
Volume: 81
Pages: 094519-25.
Peer Reviewed
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[Presentation] Nodal superconducting gap of Bi2Sr2-xLnxCuO6+δ (Ln=La, Eu) investigated by electronic specific heat measurements2012
Author(s)
N. Momono, N. Saikai, T. Kurosawa, Y. Amakai, S. Murayama, H. Takano, M. Oda, M. Ido
Organizer
Ninth International Conference on New Theories, Discoveries and Applications of Superconductors and Related Materials (New3SC-9)
Place of Presentation
GRAND HOTEL VILLA TUSCOLANA, Frascati- Rome, Italy
Year and Date
20120915-22
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