Quantum spin-liquid states in an organic magnetic layer and molecular rotor hybrid
| Autor: | Patrick Batail, Edoardo Martino, P. Wzietek, Péter Szirmai, Konstantins Mantulnikovs, Cécile Mézière, Bálint Náfrádi, Stephen Cottrell, Christopher Baines, Guillaume Bastien, Andrea Pisoni, László Forró, Kira Riedl |
|---|---|
| Přispěvatelé: | Ecole Polytechnique Fédérale de Lausanne (EPFL), MOLTECH-Anjou, Université d'Angers (UA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences (IOCB / CAS), Czech Academy of Sciences [Prague] (CAS), Laboratoire de Physique des Solides (LPS), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Institut für Theoretische Physik [Frankfurt am Main] (ITP), Goethe-Universität Frankfurt am Main, Science and Technology Facilities Council (STFC), Paul Scherrer Institute (PSI) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Spin glass
Spin states Geometrical frustration 02 engineering and technology 01 natural sciences molecular rotor motion 0103 physical sciences Hexagonal lattice order 010306 general physics Brownian motion Quantum fluctuation [PHYS]Physics [physics] Multidisciplinary triangular lattice Condensed matter physics quenched randomness QSL exchange 021001 nanoscience & nanotechnology Magnet Physical Sciences Condensed Matter::Strongly Correlated Electrons program Quantum spin liquid 0210 nano-technology phases esr quantum spin liquid |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America Proceedings of the National Academy of Sciences of the United States of America, National Academy of Sciences, 2020, pp.202000188. ⟨10.1073/pnas.2000188117⟩ Proc Natl Acad Sci U S A |
| ISSN: | 0027-8424 1091-6490 |
| DOI: | 10.1073/pnas.2000188117⟩ |
| Popis: | International audience; The exotic properties of quantum spin liquids (QSLs) have continually been of interest since Anderson’s 1973 ground-breaking idea. Geometrical frustration, quantum fluctuations, and low dimensionality are the most often evoked material’s characteristics that favor the long-range fluctuating spin state without freezing into an ordered magnet or a spin glass at low temperatures. Among the few known QSL candidates, organic crystals have the advantage of having rich chemistry capable of finely tuning their microscopic parameters. Here, we demonstrate the emergence of a QSL state in [EDT-TTF-CONH2]2+[BABCO−] (EDT-BCO), where the EDT molecules with spin-1/2 on a triangular lattice form layers which are separated by a sublattice of BCO molecular rotors. By several magnetic measurements, we show that the subtle random potential of frozen BCO Brownian rotors suppresses magnetic order down to the lowest temperatures. Our study identifies the relevance of disorder in the stabilization of QSLs. |
| Databáze: | OpenAIRE |
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