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Anomalous metallic behaviour in the doped spin liquid candidate κ-(ET)4Hg2.89Br8
- Source :
- Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017), Nature Communications
- Publication Year :
- 2017
- Publisher :
- Nature Portfolio, 2017.
-
Abstract
- Quantum spin liquids are exotic Mott insulators that carry extraordinary spin excitations. Therefore, when doped, they are expected to afford metallic states with unconventional magnetic excitations. Here, we report experimental results which are suggestive of a doped spin liquid with anomalous metallicity in a triangular-lattice organic conductor. The spin susceptibility is nearly perfectly scaled to that of a non-doped spin liquid insulator in spite of the metallic state. Furthermore, the charge transport that is confined in the layer at high temperatures becomes sharply deconfined on cooling, coinciding with the rapid growth of spin correlations or coherence as signified by a steep decrease in spin susceptibility. The present results substantiate the desired doped spin liquid and suggest a strange metal, in which the coherence of the underlying spin liquid promotes the deconfinement of charge from the layers while preserving the non-Fermi-liquid nature.<br />It is expected that introducing charge carriers into an exotic quantum spin liquid state may lead to an unconventional metal but there are no clear realizations of a metallic spin liquid. Here, the authors present a spin liquid candidate that also shows evidence of strange metal behavior.
- Subjects :
- Materials science
Science
General Physics and Astronomy
02 engineering and technology
01 natural sciences
General Biochemistry, Genetics and Molecular Biology
Article
Physics::Fluid Dynamics
Spin wave
0103 physical sciences
lcsh:Science
010306 general physics
Spin (physics)
Multidisciplinary
Spin polarization
Condensed matter physics
Mott insulator
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter::Soft Condensed Matter
Spinplasmonics
Spin Hall effect
lcsh:Q
Charge carrier
Condensed Matter::Strongly Correlated Electrons
Quantum spin liquid
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 8
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....fd616a33458df2740bdac9b85510417d