Condensed Matter Theory Group

Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

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Seminar in 2005

Speaker : (1) Dr. S. A. Jafari, (2) S. Hikino
Date : Dec. 28 (Wed.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Nonlinear optical response of correlated electrons in infinite dimension: DMFT, (2) Quantum transport in superconductor/ferromagnet nanostructure

Speaker : (1) A. Toyama, (2) A. Ando
Date : Dec. 14 (Wed.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Derivation of t-J model from d-p model, (2) DMRG and one-particle spectral function of 1D Hubbard model

Speaker : Prof. G. Baskaran (IMSc, India)
Date : Dec. 13 (Tue.) 16:00〜
Room : Room I, 2nd floor, COE Bldg
Title : Supersolid He4

Speaker : S. Hikino
Date : Dec. 1 (Thu.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Magnetic fluctuation effects on Josephson current in a superconductor/ferromagnetic metal/superconductor junction

Speaker : Prof. N. Bulut
Date : Nov. 22 (Tue.) 16:30〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Two-impurity Anderson model for magnetic semiconductors: a Monte Carlo study with the Hirsch-Fye algorithm

Speaker : (1) Dr. S. A. Jafari, (2) Prof. N. Bulut
Date : Nov. 8 (Tue.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Nonlinear optical response of correlated electrons in infinite dimensions: DMFT, (2) Two-impurity Anderson model for magnetic semiconductors

Speaker : Dr. Y. Shiratsuchi (Osaka University)
Date : Sep. 25 (Tue.) 16:00〜
Room : Room I, 2nd floor, COE Bldg
Title : Creation and magnetism of nano-magnet by ultra thin-film

Speaker : Prof. A. A. Abrikosov (Argonne National Laboratory, USA)
Date : Sep. 21 (Fri.) 16:00〜
Room : Auditorium, 2nd Bldg
Title : Superconductivity: History and modern state

Speaker : Prof. T. P. Devereaux (University of Waterloo, Canada)
Date : Sep. 21 (Fri.) 11:00〜
Room : 2nd floor, IFCAM Bldg
Title : Shining light on the cuprates

Speaker : (1) T. Tohyama, (2) H. Matsueda
Date : Sep. 11 (Tue.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Electronic states near impurity: t-J model picture, (2) Electron-phonon coupling and spin-charge separation in 1D Mott insulators

Speaker :
Date : Oct. 4 (Tue.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Meetings reports

Speaker :
Date : Sep. 6 (Tue.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : JPSJ meeting rehearsals

Speaker : (1) Dr. S. A. Jafari, (2) Prof. N. Bulut
Date : Sep. 1 (Thu.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Nonlinear optical response of correlated electrons in infinite dimension, (2) Spin-charge separation and the temperature dependent ARPES measurements on the organic conductor TTF-TCNQ

Speaker : Prof. J. F. Sanchez-Royo (Univ. Valencia, Spain)
Date : Aug. 9 (Tue.) 14:00〜
Room : 2nd floor, IFCAM Bldg
Title : Fermi surface of metallic Ag films on silicon substrates

Speaker : (1) S. Hikino, (2) T. Yamashita
Date : Jul. 27 (Wed.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Tunneling Hamiltonian approach to Josephson current in a superconductor/ferromagnetic metal/superconductor(SC/FM/SC) junction, (2) Scattering matrix theory for Josephson junctions

Speaker : Dr. C. Marrache-Kikuchi (CSNSM, France)
Date : Jul. 20 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Dimensionality effects in NbSi thin films

Speaker : (1) K. Tsutsui, (2) W. Koshibae
Date : Jul. 12 (Tue.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Theoretical study on the RIXS for anomalous quantum materials, (2) Single particle excitation spectra in the Hubbard model on Kagome lattice

Speaker : Prof. T. Dietl (Polish Academy of Sciences; ERATO, JST; Warsaw Univ.)
Date : Jul. 6 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Theory of diluted ferromagnetic semiconductors

Speaker : (1) Dr. M. Onoda (AIST), (2) Prof. S. E. Barnes (Univ. Miami)
Date : Jun. 30 (Thu.) 13:30〜
Room : 2nd floor, IFCAM Bldg
Title : (1) Pure spin current of conduction electrons and the dynamics of localized spins, (2) Current driven dynamics of bi-domain spin valves

Speaker : Prof. P. Prelovsek (IFCAM & Univ. Ljubljana, Slovenia)
Date : Jun. 28 (Tue.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Dispersion of the magnetic resonant mode in cuprates

Speaker : Prof. S. Sorella (SISSA, Italy)
Date : Jun. 20 (Mon.) 21 (Tue.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Energy optimization of strongly correlated wave function

Speaker : M. Mori
Date : Jun. 6 (Mon.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Charge imbalance effects in multilayered high-Tc cuprates

Speaker : Prof. P. Prelovsek (IFCAM & Univ. Ljubljana, Slovenia)
Date : May 25 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Spin-fluctuation mechanism of superconductivity in cuprates

Speaker : (1) Prof. A. Sakuma (Tohoku Univ.), (2) J. Ieda
Date : May 18 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : (1) Microscopic theory of Gilbert dumping II, (2) Mechanism of magnetic pendulum motion

Speaker : (1) T. Yamashita, (2) S. Hikino
Date : May 11 (Wed.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Temperature-induced transition between 0 and p states in SC/FM/SC junctions, (2) Thermal noise in Josephson junction

Speaker : T. Tohyama
Date : Apr. 26 (Tue.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Workshop reports, (2) Angle-resolved two-photon photoemission of Mott insulator, (3) Numerical study of charge and electronic excitations in high-Tc cuprates

Speaker : Prof. G. Seibold (Brandenburg University of Technology Cottbus, Germany)
Date : Apr. 20 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : From stripes to checkerboards

Speaker : Dr. S. A. Jafari
Date : Apr. 19 (Tue.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Nonlinear optical response for SDW systems

Speaker : Prof. N. Bulut (JSPS & Koc Univ., Turkey)
Date : Apr. 14 (Thu.) 11:00〜
Room : Room I, 2nd floor, COE Bldg
Title : Effects of nonmagnetic impurities in high-Tc cuprates

Speaker : (1) Prof. V. Sechovsky (Charles Univ., Czech Republic), (2) Dr. J. Vejpravova (Charles Univ., Czech Republic)
Date : Apr. 13 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : (1) Magnetic history dependent antiferromagnetism - UNiAl case, (2) Consequences of p- and d- metal substitutions on structure and electronic properties of CePt3Si related compounds

Speaker :
Date : Mar. 31 (Thu.) 15:45〜
Room : 2nd floor, IFCAM Bldg
Title : Meeting reports

Speaker :
Date : Mar. 16 (Wed.) 15:30〜13:30〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Meeting rehearsals

Speaker : (1) M. Ichimura, (2) S. Takahashi, (3) K. Tanikawa
Date : Mar. 9 (Wed.) 16:30〜13:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Short review on diluted magnetic semiconductors, (2) Magnetic impurity level and ferromagnetic interactions in diluted magnetic semiconductors I, (3) Magnetic impurity level and ferromagnetic interactions in diluted magnetic semiconductors II (effects of orbital degeneracy)

Speaker : Dr. A. S. Jafari
Date : Mar. 7 (Mon.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Nonlinear optical response due to nonlinear couplings

Speaker : (1) H. Matsueda, (2) Prof. N. Bulut (IFCAM & Koc Univ., Turkey), (3) T. Tohyama
Date : Mar. 2 (Wed.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) DMRG study of single particle excitation spectra in 1D Mott insulator, (2) Effect of Temperature on ARPES in Na0.96V2O5, (3) One electron spectral weight in 1D Hubbard model

Speaker:
Date : Mar. 1 (Tue.) 9:00〜12:00
Room : 2nd floor, IFCAM Bldg
Title : The 3rd Maekawa CREST meeting

Speaker: Prof. A. Liebsch (Research Center Juelich, Germany)
Date : Feb. 23 (Wed.) 14:00〜
Room : 2nd floor, IFCAM Bldg
Title : Coulomb correlations in multi-orbital materials: Na_xCoO_2 and Ca_xSr_2-xRuO_4

Speaker: (1) Dr. H. Eisaki (AIST), (2) Prof. H. Mukuda (Osaka Univ.), (3) M. Mori
Date : Feb. 16 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : (1) Tuning the knob of high-Tc superconductors: role of chemical disorder and multiple layers, (2) Coexistence of superconductivity and antiferromagnetism in multilayered cuprates: Cu-NMR study, (3) Short comments

Speaker : Dr. S. Yunoki (SISSA, Italy)
Date : Feb. 7 (Mon.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Low-lying excitations of a strongly correlated superconducting state: a variational Monte Carlo study

Speaker : Prof. G. Seibold (Brandenburg University of Technology Cottbus, Germany)
Date : Feb. 4 (Fri.) 16:00〜
Room : Room I, 2nd floor, COE Bldg
Title : The unrestricted Gutzwiller+RPA approach and its application to stripes in cuprates

Speaker : Prof. N. Bulut (IFCAM & Koc Univ., Turkey)
Date : Jan. 31 (Mon.) 16:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Hubbard model on Kagome and Triangular lattices

Speaker : H. Onodera
Date : Jan. 4 (Tue.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Theoretical study on optical excited states and optical responses in low-dimensional Mott insulator
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