From Quantum Disorder to Magnetic Order in an s=½ Kagome Lattice: A Structural and Magnetic Study of Herbertsmithite at High Pressure

D. Kozlenko, A. Kusmartseva, E. Lukin, D. Keen, W. Marshall, Mark De Vries, K. V. Kamenev

Research output: Contribution to journalArticlepeer-review

Abstract

The structural and magnetic properties of deuterated herbertsmithite have been studied by means of neutron powder diffraction and magnetic susceptibility measurements in a wide range of temperatures and pressures. The experimental data demonstrate that a phase transition from the quantum-disordered spin-liquid phase to the long-range ordered antiferromagnetic phase with the Néel temperature TN=6  K is induced at P=2.5  GPa. The observed decrease of TN upon compression correlates with the anomalies in pressure behavior of Cu-O bond length and Cu-O-Cu bond angles. The reasons for the observed spin-freezing transition are discussed within the framework of the available theoretical models and the recent observation of the field-induced spin freezing.
Original languageEnglish
Article number187207
Number of pages5
JournalPhysical Review Letters
Volume108
Issue number18
DOIs
Publication statusPublished - 4 May 2012

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