Pressure-induced quantum critical and multicritical points in a frustrated spin liquid

Thede, M.; Mannig, A.; Månsson, M.; Hüvonen, D.; Khasanov, R.; Morenzoni, E.; Zheludev, A.

doi:10.1103/PhysRevLett.112.087204

Pressure-induced quantum critical and multicritical points in a frustrated spin liquid

Thede M, Mannig A, Månsson M, Hüvonen D, Khasanov R, Morenzoni E & Zheludev A

Citation

Thede, M., Mannig, A., Månsson, M., Hüvonen, D., Khasanov, R., Morenzoni, E., & Zheludev, A. (2014). Pressure-induced quantum critical and multicritical points in a frustrated spin liquid. Physical Review Letters, 112(8), 087204 (5 pp.). https://doi.org/10.1103/PhysRevLett.112.087204

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:9023

The quantum spin-liquid compound (C₄H₁₂N₂)Cu₂Cl₆ is studied by muon spin relaxation under hydrostatic pressures up to 23.6 kbar. At low temperatures, pressure-induced incommensurate magnetic order is detected beyond a quantum critical point at P_c∼ 4.3 kbar. An additional phase transition to a different ordered phase is observed at P₁∼ 13.4 kbar. The data indicate that the high-pressure phase may be a commensurate one. The established (P-T) phase diagram reveals the corresponding pressure-induced multicritical point at P₁, T₁= 2.0 K.