Issue |
EPL
Volume 97, Number 5, March 2012
|
|
---|---|---|
Article Number | 56001 | |
Number of page(s) | 6 | |
Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
DOI | https://doi.org/10.1209/0295-5075/97/56001 | |
Published online | 01 March 2012 |
Identification of strongly correlated spin liquid in herbertsmithite
1
Petersburg Nuclear Physics Institute - Gatchina, 188300, Russia
2
Clark Atlanta University - Atlanta, GA 30314, USA
3
Komi Science Center, Ural Division, RAS - Syktyvkar, 167982, Russia
4
Opole University, Institute of Physics - Opole, 45-052, Poland, EU
Received:
11
October
2011
Accepted:
27
January
2012
An exotic quantum spin liquid (QSL) is formed with such hypothetic particles as fermionic spinons carrying spin 1/2 and no charge. Here we calculate its thermodynamic and relaxation properties. Our calculations unveil the fundamental properties of QSL, forming a strongly correlated Fermi system located at a fermion condensation quantum phase transition. These are in good agreement with experimental data and allow us to detect the behavior of QSL as that observed in heavy-fermion metals. We predict that the thermal resistivity of QSL under the application of magnetic fields at fixed temperature demonstrates a very specific behavior. The key features of our findings are the presence of spin-charge separation and QSL formed with itinerant heavy spinons in herbertsmithite.
PACS: 64.70.Tg – Quantum phase transitions / 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.) / 71.10.Hf – Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems
© EPLA, 2012
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