Charge fluctuation, charge ordering, and zero-gap state in organic conductors
We have carried out a series of measurements of angular dependence of solid-state NMR spectrum using single crystal samples on various organic molecular conductors, in order to investigate the natures of the electronic states at low temperatures. We confirmed a charge ordered insulating state in α-(...
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| Veröffentlicht in: | Physica. B, Condensed matter Condensed matter, 2012-06, Vol.407 (11), p.1757-1761 |
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| container_title | Physica. B, Condensed matter |
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| creator | Takahashi, Toshihiro |
| description | We have carried out a series of measurements of angular dependence of solid-state NMR spectrum using single crystal samples on various organic molecular conductors, in order to investigate the natures of the electronic states at low temperatures. We confirmed a charge ordered insulating state in α-(BEDT-TTF)2I3 and large charge disproportionation in the metallic state of this salt. In another charge ordered system, θ-(BEDT-TTF)2RbZn(SCN)4, we observed unusual NMR line broadening, proportional to resonance shift, in the metallic state above the transition. We found that this broadening is due to charge disproportionation, or more correctly, due to the inhomogeneity of local susceptibility at nuclear sites and analyzed its dynamics. We observed similar broadening in various organic molecular conductors as well, such as θ-(BEDT-TTF)2CsZn(SCN)4, an exotic Bechgaad salt, (TMTSF)2FSO3, and λ-type BETS salts, λ-(BETS)2(Fe,Ga)Cl4. We found the mechanism of CD in each system is different, respectively. |
| doi_str_mv | 10.1016/j.physb.2012.01.024 |
| format | Article |
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We confirmed a charge ordered insulating state in α-(BEDT-TTF)2I3 and large charge disproportionation in the metallic state of this salt. In another charge ordered system, θ-(BEDT-TTF)2RbZn(SCN)4, we observed unusual NMR line broadening, proportional to resonance shift, in the metallic state above the transition. We found that this broadening is due to charge disproportionation, or more correctly, due to the inhomogeneity of local susceptibility at nuclear sites and analyzed its dynamics. We observed similar broadening in various organic molecular conductors as well, such as θ-(BEDT-TTF)2CsZn(SCN)4, an exotic Bechgaad salt, (TMTSF)2FSO3, and λ-type BETS salts, λ-(BETS)2(Fe,Ga)Cl4. We found the mechanism of CD in each system is different, respectively.</description><identifier>ISSN: 0921-4526</identifier><identifier>EISSN: 1873-2135</identifier><identifier>DOI: 10.1016/j.physb.2012.01.024</identifier><language>eng</language><publisher>Kidlington: Elsevier B.V</publisher><subject>(TMTSF)2FSO3 ; a-(BEDT-TTF)2I3 ; Charge ; Collective effects ; Condensed matter ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Conductors ; Disproportionation ; Dynamic tests ; Dynamical systems ; Dynamics ; Electron states ; Exact sciences and technology ; Exchange, correlation, dielectric and magnetic functions, plasmons ; l-(BETS)2(Fe,Ga)Cl4 ; Nuclear magnetic resonance ; Physics ; q-(BEDT-TTF)2CsZn(SCN)4</subject><ispartof>Physica. 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B, Condensed matter</title><description>We have carried out a series of measurements of angular dependence of solid-state NMR spectrum using single crystal samples on various organic molecular conductors, in order to investigate the natures of the electronic states at low temperatures. We confirmed a charge ordered insulating state in α-(BEDT-TTF)2I3 and large charge disproportionation in the metallic state of this salt. In another charge ordered system, θ-(BEDT-TTF)2RbZn(SCN)4, we observed unusual NMR line broadening, proportional to resonance shift, in the metallic state above the transition. We found that this broadening is due to charge disproportionation, or more correctly, due to the inhomogeneity of local susceptibility at nuclear sites and analyzed its dynamics. We observed similar broadening in various organic molecular conductors as well, such as θ-(BEDT-TTF)2CsZn(SCN)4, an exotic Bechgaad salt, (TMTSF)2FSO3, and λ-type BETS salts, λ-(BETS)2(Fe,Ga)Cl4. We found the mechanism of CD in each system is different, respectively.</description><subject>(TMTSF)2FSO3</subject><subject>a-(BEDT-TTF)2I3</subject><subject>Charge</subject><subject>Collective effects</subject><subject>Condensed matter</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Conductors</subject><subject>Disproportionation</subject><subject>Dynamic tests</subject><subject>Dynamical systems</subject><subject>Dynamics</subject><subject>Electron states</subject><subject>Exact sciences and technology</subject><subject>Exchange, correlation, dielectric and magnetic functions, plasmons</subject><subject>l-(BETS)2(Fe,Ga)Cl4</subject><subject>Nuclear magnetic resonance</subject><subject>Physics</subject><subject>q-(BEDT-TTF)2CsZn(SCN)4</subject><issn>0921-4526</issn><issn>1873-2135</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhi0EEuXjF7BkQWJogs9xmnpgQBVfEogFZsuxz8VVsIudIMGvx6UVI7ecdPe89-peQs6AVkBhdrmq1m9fqasYBVZRqCjje2QC87YuGdTNPplQwaDkDZsdkqOUVjQXtDAhT4s3FZdY2H7Uw6gGF_y00NtZiAaj88tpobwpvjGGcqnWRRrUgIXzeb9U3ulCB2-yOsR0Qg6s6hOe7voxeb29eVncl4_Pdw-L68dS85oNpWG6q7kxtgHsWlXPWmoEFwKsajmYhkJj84KLFrvOou6EsRrn0MyE4J3S9TG52N5dx_AxYhrku0sa-155DGOSQBkTOQQKGa23qI4hpYhWrqN7V_ErQ3ITnlzJ3_DkJjxJQWZdVp3vDFTSqrdRee3Sn5Q1AljLN9zVlsP87afDKJN26DUaF1EP0gT3r88P_SqG-w</recordid><startdate>20120601</startdate><enddate>20120601</enddate><creator>Takahashi, Toshihiro</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20120601</creationdate><title>Charge fluctuation, charge ordering, and zero-gap state in organic conductors</title><author>Takahashi, Toshihiro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c432t-d2cb34ddf51eb7a3670d94991fa741d5015feb7497ebbfecb9dfce8156994bac3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>(TMTSF)2FSO3</topic><topic>a-(BEDT-TTF)2I3</topic><topic>Charge</topic><topic>Collective effects</topic><topic>Condensed matter</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Conductors</topic><topic>Disproportionation</topic><topic>Dynamic tests</topic><topic>Dynamical systems</topic><topic>Dynamics</topic><topic>Electron states</topic><topic>Exact sciences and technology</topic><topic>Exchange, correlation, dielectric and magnetic functions, plasmons</topic><topic>l-(BETS)2(Fe,Ga)Cl4</topic><topic>Nuclear magnetic resonance</topic><topic>Physics</topic><topic>q-(BEDT-TTF)2CsZn(SCN)4</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Takahashi, Toshihiro</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physica. 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In another charge ordered system, θ-(BEDT-TTF)2RbZn(SCN)4, we observed unusual NMR line broadening, proportional to resonance shift, in the metallic state above the transition. We found that this broadening is due to charge disproportionation, or more correctly, due to the inhomogeneity of local susceptibility at nuclear sites and analyzed its dynamics. We observed similar broadening in various organic molecular conductors as well, such as θ-(BEDT-TTF)2CsZn(SCN)4, an exotic Bechgaad salt, (TMTSF)2FSO3, and λ-type BETS salts, λ-(BETS)2(Fe,Ga)Cl4. We found the mechanism of CD in each system is different, respectively.</abstract><cop>Kidlington</cop><pub>Elsevier B.V</pub><doi>10.1016/j.physb.2012.01.024</doi><tpages>5</tpages></addata></record> |
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| ispartof | Physica. B, Condensed matter, 2012-06, Vol.407 (11), p.1757-1761 |
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| source | Elsevier ScienceDirect Journals |
| subjects | (TMTSF)2FSO3 a-(BEDT-TTF)2I3 Charge Collective effects Condensed matter Condensed matter: electronic structure, electrical, magnetic, and optical properties Conductors Disproportionation Dynamic tests Dynamical systems Dynamics Electron states Exact sciences and technology Exchange, correlation, dielectric and magnetic functions, plasmons l-(BETS)2(Fe,Ga)Cl4 Nuclear magnetic resonance Physics q-(BEDT-TTF)2CsZn(SCN)4 |
| title | Charge fluctuation, charge ordering, and zero-gap state in organic conductors |
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