Single-component molecular material hosting antiferromagnetic and spin-gapped Mott subsystems
Abstract
We investigated a system based solely on a single molecular species, Cu(tmdt) 2, accommodating d and π orbitals within the molecule. 13C nuclear magnetic resonance measurements captured singlet-triplet excitations of π spins indicating the existence of a π -electron-based spin-gapped Mott insulating subsystem, which has been hidden by the large magnetic susceptibility exhibited by the d spins forming antiferromagnetic chains. The present results demonstrate a unique hybrid Mott insulator composed of antiferromagnetic and spin-singlet Mott subsystems with distinctive dimensionalities.
- Publication:
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Physical Review B
- Pub Date:
- March 2017
- DOI:
- 10.1103/PhysRevB.95.094420
- arXiv:
- arXiv:1702.08254
- Bibcode:
- 2017PhRvB..95i4420T
- Keywords:
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- Condensed Matter - Materials Science
- E-Print:
- 23 pages, 7 figures (including Supplemental Material)