2010 Fiscal Year Final Research Report
Theoretical studies on the anomalous response to external fields in strongly correlated organic crystals
| Project/Area Number |
19740218
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | Kyoto Sangyo University |
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Principal Investigator |
HOTTA Chisa Kyoto Sangyo University, 理学部, 准教授 (50372909)
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| Project Period (FY) |
2007 – 2010
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| Keywords | 強相関系 / フラストレーション / 有機導体 |
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| Research Abstract |
We studied the low-dimensional strongly correlated electronic systems, motivated by several organic systems which respond anomalously to the magnetic or electric field. Five different topics are studied ; (1) an expotic1○!+1 dimensional metal in strongly correlated electronic system on an anisotropic triangular lattice is proposed, (2) a generalized von Neumann theorem is constructed which enables to design multi-band systems with Dirac points, (3) The one-dimensional quarter-filled strongly correlated electronic system coupled to localized spins is shown to produce frustrated magnetism which respond sensitive to magnetic field, (4) the origin of an anomalous dielectric properties in the dimer Mott insulator, κ-ET_2Cu_2(CN)_3, is clarified based on the quantum electric dipole picture, (5) universal temperature dependence of field induced Tomonaga-Luttinger liquid state in one dimensional gapped spin system is proposed and examined in organic crystal, DIMPY.Thus, the strong correlation of electrons results in various exotic quantum many body states.
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[Journal Article] Field-Induced Tomonaga-Luttinger Liquid Phase of a Two-Leg Spin-1/2 Ladder with Strong Leg Interactions2010
Author(s)
T.Hong, Y.H.Kim, C.Hotta, Y.Takano, G.Tremelling, C.P.Landee, H.J.Kang, N.B.Christensen, K.P.Schmidt, K.Lefmann, G.S.Uhrig, C.Broholm
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Journal Title
Phys.Rev.Lett. 105
Pages: 137207(1-4)
Peer Reviewed
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[Presentation] 量子スピンギャップ系における磁場誘起朝永-Luttinger液体相の解析2010
Author(s)
T.Hong, Y.H.Kim, 堀田知佐, 高野安正, G.Tremelling, M.M.Turnbull, C.P.Landee, H.J.Kang, N.B.hristensen, K.Lefmann, K.P.Schmidt, G.S.Uhrig, C.Broholm
Organizer
日本物理学会2010年秋季大会
Place of Presentation
大阪府立大学
Year and Date
2010-09-23
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