Quantum phase transition in the dioptase magnetic lattice

Gros, C.; Lemmens, P.; Choi, K. Y.; Güntherodt, G.; Baenitz, M.; Otto, H. H.

doi:10.1209/epl/i2002-00347-0

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Quantum phase transition in the dioptase magnetic lattice

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Baenitz, M.
Michael Baenitz, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Gros, C., Lemmens, P., Choi, K. Y., Güntherodt, G., Baenitz, M., & Otto, H. H. (2002). Quantum phase transition in the dioptase magnetic lattice. Europhysics Letters, 60(2), 276-280. doi:10.1209/epl/i2002-00347-0.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0015-30F5-A

Abstract

The study of quantum phase transitions (see Sachdev S., Quantum Phase Transitions ( Cambridge University Press, Cambridge) 1999), which are zero-temperature phase transitions between distinct states of matter, is of current interest in research since it allows for a description of low-temperature properties based on universal relations. Here we show that the crystal green dioptase Cu6Si6O18.6H(2)O, known to he ancien Romans as he gem of Venus, has a magnetic crystal structure, formed by he Cu(II) ions, which allows for a quantum phase transition between an antiferromagnetically ordered state and a quantum spin liquid.