Condensed Matter Theory Group

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

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2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

Seminar in 2004

Speaker : Prof. Y. J. Uemura (Columbia University)
Date : Dec. 21 (Tue.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Roton-analogue, resonant spin-charge coupling, and superfluid density in high-Tc superconductors

Speaker : (1) H. Murata, (2) Y. Inoue
Date : Dec. 15 (Wed.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Electronic states of pyrochlore oxides, (2) Optical conductivity of 2-dimensional Hubbard model

Speaker : H. Matsueda
Date : Dec. 1 (Wed.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Single-particle excitation spectra of 1D Mott insulators

Speaker : Prof. G. Baskaran (IFCAM & IMSc India)
Date : Nov. 15 (Mon.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : On the Mechanism of Superconductivity in Doped Diamond

Speaker : T. Tohyama
Date : Nov. 9 (Tue.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Drude weight of low-dimensional Hubbard model

Speaker : Prof. N. Bulut (IFCAM & Koc Univ., Turkey)
Date : Oct. 29 (Fri.) 14:00〜
Room : Room I, 2nd floor, COE Bldg
Title : Quantum Monte Carlo study of the magnetic correlations for the Hubbard model on the Kagome and triangular lattices

Speaker : Dr. H. Tsuchiura (Dept. of Applied Physics, Tohoku Univ.)
Date : Oct. 28 (Thu.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Bound state in vortex core of high-Tc superconductors

Speaker : H. Onodera
Date : Oct. 26 (Tue.) 15:4514:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Theory of photo-excited states and response of cuprate Mott insulators

Speaker : K. Tsutsui
Date : Oct. 20 (Wed.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Resonant inelastic X-ray scattering in YBCO and NCCO

Speaker : Prof. E. K. U. Gross (Freie Univ, Germany)
Date : Oct. 13 (Wed.) 14:00〜
Room : Room I, 2nd floor, COE Bldg
Title : Ab-Initio Theory of Superconductivity

Speaker :
Date : Oct. 12 (Tue.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : (Kick off Meeting)

Speaker : T. Yamashita
Date : Oct. 6 (Wed.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Theory of spin dependent transport in ferromagnet/superconductor nano-structures

Speaker :
Date : Sep. 17 (Fri.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Meeting reports

Speaker :
Date : Sep. 9 (Tue.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (reserve)

Speaker :
Date : Sep. 7 (Tue.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Meeting rehearsals

Speaker : Prof. N. Bulut (IFCAM & Koc Univ., Turkey)
Date : Sep. 2 (Thu.) 15:00〜
Room : 2nd floor, IFCAM Bldg
Title : Quantum Monte Carlo study of the pairing interaction in the two-leg Hubbard ladder

Speaker : K. Tanikawa
Date : Sep. 1 (Wed.) 15:4513:30〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Theoretical study on localized moment in magnetic semiconductors

Speaker : Prof. S. E. Barnes (IFCAM & Univ. Miami)
Date : Aug. 17 (Tue.) 15:00〜
Room : 2nd floor, IFCAM Bldg
Title : Current and force driven Bloch walls and their applications in spintronics

Speaker : Prof. D. Poilblanc
Date : Jul. 21 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Superconductivity in doped spin ladders

Speaker : W. Koshibae
Date : Jun. 30 (Wed.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Hall effect in the CoO2 layer with hexagonal structure

Speaker : Prof. P. H. Dederichs (Research Center Juelich, Germany)
Date : Jun. 28 (Mon.) 16:00〜
Room : Room I, 2nd floor, COE Bldg
Title : Exchange interactions and Curie temperatures in dilute magnetic semiconductors

Speaker : Prof. J. M. De Teresa (Univ. Zaragoza, Spain)
Date : Jun. 18 (Fri.) 16:00〜
Room : Room I, 2nd floor, COE Bldg
Title : Relevance of small-angle neutron scattering (SANS) to the understanding of the ground state of colossal magnetoresistance manganites

Speaker : Prof. S. E. Barnes (IFCAM & Univ. Miami)
Date : Jun. 16 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Phase separation and hole doping in the cuprate high $T_c$ superconductors

Speaker : Prof. Jan Martinek (Universite Karlsruhe, Germany)
Date : Jun. 1 (Tue.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Quantum dots attached to ferromagnetic leads: exchange field, spin precession, and Kondo effect

Speaker : (1) T. Yamashita, (2) H. Onodera
Date : May. 19 (Wed.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Josephson effect in a superconducting ring with 0- and pi-state junction, (2) Two-photon photoemission spectroscopy and photoexcited states in Mott insulators

Speaker : T. Yamashita
Date : May. 12 (Wed.) 15:00〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Josephson effect in a system with 0- and pi-state junctions

Speaker : Prof. G. Baskaran (IFCAM & IMSc India)
Date : May. 11 (Tue.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : A theory of superconductivity in doped diamond

Speaker : (1) H. Matsueda, (2) M. Mori
Date : Apr. 27 (Tue.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Charge modulation and optical response in a d-p model for a Br-bridged Ni-halide, (2) Josephson coupling energy through the antiferromagnetic insulator in multilayerd high-Tc cuprates

Speaker : S. A. Jafari (Sharif Univ. Tech., Iran & IMSc, India)
Date : Apr. 20 (Tue.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Gapless neutral spin-1 collective mode in graphite

Speaker : (1) H. Murata, (2) Y. Inoue
Date : Apr. 13 (Tue.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Electronic states of pyrochlore oxides, (2) Numerical excact-diagonalization study on an optical conductivity of 2-dimensional Hubbard model

Speaker :
Date : Apr. 6 (Tue.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Meeting reports

Speaker : Prof. G. Baskaran (IFCAM & IMSc India)
Date : Apr. 5 (Mon.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : A resolution 'electron-hole doping asymmetry' puzzle in high Tc cuprates

Speaker : Prof. H. Takayanagi (IMR & NTT Basic Research Lab.)
Date : Mar. 25 (Thu.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title :

Speaker :
Date : Mar. 17 (Wed.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Meeting rehearsals

Speaker : Prof. Jan Martinek (IFCAM, Universite Karlsruhe & Polish Academy of Sciences)
Date : Mar. 12 (Fri.) 16:00〜
Room : Room I, 2nd floor, COE Bldg
Title : Indirect exchange RKKY interaction between semiconducting quantum dots

Speaker : Dr. H. Utsumi (Max-Planck-Institut Halle, Germany)
Date : Mar. 11 (Thu.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Noise of a single-electron transistor in the regime of large quantum fluctuations of island charge and out of equilibrium

Speaker : Prof. K. Penc (Hungarian Academy of Sciences)
Date : Feb. 25 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Extended Hubbard model on pyrochlore lattice

Speaker : (1) K. Tanikawa, (2) H. Yamamoto
Date : Feb. 5 (Thu.) 13:30〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Josephson effect in nano-structure with ferromagnet, (2) Theoretical study of CuL-edge RIXS in cuprate insulators

Speaker : H. Matsueda
Date : Feb. 4 (Wed.) 13:30〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : Dynamical DMRG study of photoexcited states in 1D Mott insulator

Speaker : Dr. H. Tamura (NTT Basic Research Lab.)
Date : Feb. 3 (Tue.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Tunable Kondo effect in a quantum wire coupled with double quantum dots

Speaker : Dr. S. Okamoto (Columbia University)
Date : Feb. 2 (Mon.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Theory of Mott insulator/band insulator heterostructure

Speaker : (1) H. Yamamoto, (2) K. Tanikawa
Date : Jan. 28 (Wed.) 15:45〜
Room : Seminar room, 5th floor, 2nd Bldg
Title : (1) Theoretical study of CuL-edge RIXS in cuprate insulators, (2) Josephson effect in nano-structure with ferromagnet

Speaker : Prof. H. Takayanagi (IMR & NTT Basic Research Lab.)
Date : Jan. 15 (Thu.) 16:00〜
Room : Seminar room, 7th floor, 2nd Bldg
Title : Quantum effects in superconductor/semiconductor heterostructures - physics of Andreev reflection -

Speaker : Prof. Jan Martinek (IFCAM, Universite Karlsruhe & Polish Academy of Sciences)
Date : Jan. 7 (Wed.) 16:00〜
Room : 2nd floor, IFCAM Bldg
Title : Kondo effect in the presence of itinerant ferromagnetism and RKKY interaction in quantum dots system
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