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Fragmented Electronic Spins with Quantum Fluctuations in Organic Mott Insulators near Quantum Spin Liquid | | Shigeki Fujiyama
; Reizo Kato
; | | Date: |
22 Mar 2019 | | Abstract: | Magnetic structures of organic Mott insulators X[Pd(dmit)2]2 (X=Me4P, Me4Sb),
of which electronic states are located near quantum spin liquid (X=EtMe3Sb),
are demonstrated by 13C NMR. Antiferromagnetic spectra and nuclear relaxations
show two distinct magnetic moments within each Pd(dmit)2 molecule, which cannot
be described by single band dimer-Mott model and requires intramolecular
electronic correlation. This unconventional fragmentation of S = 1/2 electron
spin with strong quantum fluctuation is presumably caused by nearly degenerated
intramolecular multiple orbitals, and shares a notion of quantum liquids where
electronic excitations are fractionalized and S = 1/2 spin is no longer an
elementary particle. | | Source: | arXiv, 1903.9327 | | Services: | Forum | Review | PDF | Favorites | |
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