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- W4285092907 abstract "The band structure and magnetic properties of organic charge-transfer salt $ensuremath{lambda}text{ensuremath{-}}{(text{BEDSe-TTF})}_{2}{mathrm{GaCl}}_{4}$ [BEDSe-TTF: bis(ethylenediseleno)tetrathiafulvalene; abbreviated as $ensuremath{lambda}$-BEDSe] are investigated. The reported crystal structure is confirmed using x-ray diffraction measurements, and the transfer integrals are calculated. The degree of electron correlation $U/W$ ($U$: on-site Coulomb repulsion, $W$: bandwidth) of $ensuremath{lambda}$-BEDSe is larger than one and comparable to that of the isostructural Mott insulator $ensuremath{lambda}ensuremath{-}({mathrm{ET})}_{2}{mathrm{GaCl}}_{4}$ (ET: bis(ethylenedithio)tetrathiafulvalene, abbreviated as $ensuremath{lambda}$-ET), whereas the $U/W$ of the superconducting salt $ensuremath{lambda}ensuremath{-}({mathrm{BETS})}_{2}{mathrm{GaCl}}_{4}$ [BETS: bis(ethylenedithio)tetraselenafulvalene] is smaller than one. $^{13}mathrm{C}$-NMR and $ensuremath{mu}mathrm{SR}$ measurements revealed that $ensuremath{lambda}$-BEDSe undergoes an antiferromagnetic (AF) ordering below ${T}_{mathrm{N}}=22$ K. In the AF state, discrete $^{13}mathrm{C}$-NMR spectra with a remaining central peak are observed, indicating the commensurate AF spin structure also observed in $ensuremath{lambda}$-ET. The similarity of the structural and magnetic properties between $ensuremath{lambda}$-BEDSe and $ensuremath{lambda}$-ET suggests that both salts are in the same electronic phase, i.e., the physical properties of $ensuremath{lambda}$-BEDSe can be understood by the universal phase diagram of bandwidth-controlled $ensuremath{lambda}$-type organic conductors obtained by donor molecule substitution." @default.
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- W4285092907 date "2022-07-12" @default.
- W4285092907 modified "2023-10-15" @default.
- W4285092907 title "Antiferromagnetic ordering of organic Mott insulator <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>λ</mml:mi><mml:mtext>−</mml:mtext><mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mtext>BEDSe-TTF</mml:mtext><mml:mo>)</mml:mo></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant=normal>GaCl</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math>" @default.
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- W4285092907 doi "https://doi.org/10.1103/physrevb.106.045114" @default.
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