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2011 Fiscal Year Final Research Report

Mechanism of phase transitions in novel molecular conductors and transition metal oxides by constructing and analyzing effective models

Research Project

  • PDF
Project/Area Number 21740270
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionThe Institute of Physical and Chemical Research

Principal Investigator

SEO Hitoshi  独立行政法人理化学研究所, 古崎物性理論研究室, 専任研究員 (30415054)

Project Period (FY) 2009 – 2011
Keywords物性理論 / 分子性導体 / 遷移金属酸化物 / 相転移 / 磁性 / 金属絶縁体転移 / 電荷秩序 / 新規物質
Research Abstract

In order to clarify the origin of novel phase transitions in molecular conductors and transition metal oxides, we have constructed effective models based on ab initio(first principles) band calculations. By considering electron correlation and electron-phonon interaction we succeeded in deriving microscopic models for several materials, and in proposing mechanism of unsolved problems of spin and charge ordering by model analyses.

  • Research Products

    (10 results)

All 2012 2011 2010 2009 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (4 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Tuning the magnetic dimension-ality by charge ordering in the molecular TMTTF salts2012

    • Author(s)
      吉見一慶、妹尾仁嗣、石橋章司、Stuart E. Brown
    • Journal Title

      Physical Review Letters

      Volume: Vol.108, No.9 Pages: 096402-1-096402-5

    • Peer Reviewed
  • [Journal Article] Incom-mensurate Antiferromagnetic Insulat-ing State in(MDT-TS)(AuI_2)_x2011

    • Author(s)
      吉岡英生、妹尾仁嗣、大塚雄一
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: Vol.80, No.12 Pages: 123702-1-123702-4

    • Peer Reviewed
  • [Journal Article] Finite-Temperature Properties across the Charge Ordering Transition-Combined Bosonization, Renormaliza-tion Group, and Numerical Methods-2010

    • Author(s)
      吉岡英生、土射津昌久、大塚雄一、妹尾仁嗣
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: Vol.79, No.9 Pages: 094714-1-094714-4

    • Peer Reviewed
  • [Journal Article] Spiral charge frustration in molecular conductor DI-DCNQI_2Ag2009

    • Author(s)
      妹尾仁嗣、求幸年
    • Journal Title

      Physical Review Letters

      Volume: Vol.102, No.19 Pages: 196403-1-196403-4

    • Peer Reviewed
  • [Presentation] Multi-orbital Hubbard model and magnetic ground states in M(tmdt)_22011

    • Author(s)
      妹尾仁嗣
    • Organizer
      9th International Symposium on Crystalline Organic Metals, Super-conductors and Ferromagnets(ISCOM 2011)
    • Place of Presentation
      Gniezno Poland
    • Year and Date
      2011-09-26
  • [Presentation] Single-Component Molecular Metals : p-d Mixed Multiband System2010

    • Author(s)
      妹尾仁嗣
    • Organizer
      International Conference on Science and Technology of Synthetic Metals(ICSM2010)
    • Place of Presentation
      京都国際会館
    • Year and Date
      2010-07-06
  • [Presentation] Molecular Ensemble 20092009

    • Author(s)
      妹尾仁嗣
    • Organizer
      Effective Models and Charge, Spin, Lattice Orderings in Molecular Conductors、Symposium
    • Place of Presentation
      理化学研究所
    • Year and Date
      2009-12-09
  • [Presentation] Broken symmetry states in quasi-one-dimensional molecular con-ductors-competitions, co-existences, and frustration-2009

    • Author(s)
      妹尾仁嗣
    • Organizer
      8th International Symposium on Crystalline Organic Metals, Superconductors and Ferro-magnets(ISCOM2009)
    • Place of Presentation
      ニセコヒルトンホテル
    • Year and Date
      2009-09-17
  • [Book] 動的構造解析技術と非平衡物質開発の最前線2009

    • Author(s)
      妹尾仁嗣
    • Total Pages
      174-184
    • Publisher
      シーエムシー出版
  • [Remarks]

    • URL

      http://www.riken.jp/lab-www/cond-mat-theory/seo/index.html

URL: 

Published: 2013-07-31  

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