%0 Journal Article %1 zvyagin2019pressuretuning %A Zvyagin, S. A. %A Graf, D. %A Sakurai, T. %A Kimura, S. %A Nojiri, H. %A Wosnitza, J. %A Ohta, H. %A Ono, T. %A Tanaka, H. %D 2019 %J Nat. Commun. %K b %N 1 %P 1064 %R 10.1038/s41467-019-09071-7 %T Pressure-tuning the quantum spin Hamiltonian of the triangular lattice antiferromagnet Cs$_2$CuCl$_4$ %U https://doi.org/10.1038/s41467-019-09071-7 %V 10 %X Quantum triangular-lattice antiferromagnets are important prototype systems to investigate numerous phenomena of the geometrical frustration in condensed matter. Apart from highly unusual magnetic properties, they possess a rich phase diagram (ranging from an unfrustrated square lattice to a quantum spin liquid), yet to be confirmed experimentally. One major obstacle in this area of research is the lack of materials with appropriate (ideally tuned) magnetic parameters. Using $Cs_2CuCl_4$ as a model system, we demonstrate an alternative approach, where, instead of the chemical composition, the spin Hamiltonian is altered by hydrostatic pressure. The approach combines high-pressure electron spin resonance and r.f. susceptibility measurements, allowing us not only to quasi-continuously tune the exchange parameters, but also to accurately monitor them. Our experiments indicate a substantial increase of the exchange coupling ratio from 0.3 to 0.42 at a pressure of 1.8 GPa, revealing a number of emergent field-induced phases.

@article{zvyagin2019pressuretuning, abstract = {Quantum triangular-lattice antiferromagnets are important prototype systems to investigate numerous phenomena of the geometrical frustration in condensed matter. Apart from highly unusual magnetic properties, they possess a rich phase diagram (ranging from an unfrustrated square lattice to a quantum spin liquid), yet to be confirmed experimentally. One major obstacle in this area of research is the lack of materials with appropriate (ideally tuned) magnetic parameters. Using $Cs_2CuCl_4$ as a model system, we demonstrate an alternative approach, where, instead of the chemical composition, the spin Hamiltonian is altered by hydrostatic pressure. The approach combines high-pressure electron spin resonance and r.f. susceptibility measurements, allowing us not only to quasi-continuously tune the exchange parameters, but also to accurately monitor them. Our experiments indicate a substantial increase of the exchange coupling ratio from 0.3 to 0.42 at a pressure of 1.8 GPa, revealing a number of emergent field-induced phases.}, added-at = {2019-08-14T11:39:47.000+0200}, author = {Zvyagin, S. A. and Graf, D. and Sakurai, T. and Kimura, S. and Nojiri, H. and Wosnitza, J. and Ohta, H. and Ono, T. and Tanaka, H.}, biburl = {https://www.bibsonomy.org/bibtex/2bb37c39f21bf48ea4f6b6ee9ce7a910e/ctqmat}, day = 06, description = {Pressure-tuning the quantum spin Hamiltonian of the triangular lattice antiferromagnet Cs 2 CuCl 4 | Nature Communications}, doi = {10.1038/s41467-019-09071-7}, interhash = {73f322cc1ec328e1ce4d44828c855854}, intrahash = {bb37c39f21bf48ea4f6b6ee9ce7a910e}, issn = {20411723}, journal = {Nat. Commun.}, keywords = {b}, month = {03}, number = 1, pages = 1064, refid = {Zvyagin2019}, timestamp = {2024-06-28T17:32:02.000+0200}, title = {Pressure-tuning the quantum spin Hamiltonian of the triangular lattice antiferromagnet Cs$_{\mathbf{2}}$CuCl$_{\mathbf{4}}$}, url = {https://doi.org/10.1038/s41467-019-09071-7}, volume = 10, year = 2019 }