Dimensional crossover in a spin-liquid-to-helimagnet quantum phase transition

V. O. Garlea; A. Zheludev; K. Habicht; M. Meissner; B. Grenier; L. P. Regnault; E. Ressouche

doi:10.1103/PhysRevB.79.060404

Dimensional crossover in a spin-liquid-to-helimagnet quantum phase transition

V. O. Garlea, A. Zheludev, K. Habicht, M. Meissner, B. Grenier, L. P. Regnault, E. Ressouche

Direct Geometry

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Abstract

Neutron scattering is used to study magnetic-field-induced ordering in the quasi-one-dimensional quantum spin-tube compound Sul-Cu2 Cl4 that in zero field has a nonmagnetic spin-liquid ground state. The experiments reveal an incommensurate chiral high-field phase stabilized by a geometric frustration of the magnetic interactions. The measured critical exponents β≈0.235 and ν≈0.34 at Hc ≈3.7? T point to an unusual subcritical scaling regime and may reflect the chiral nature of the quantum critical point.

Original language	English
Article number	060404
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	79
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.79.060404
State	Published - Feb 11 2009

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abstract = "Neutron scattering is used to study magnetic-field-induced ordering in the quasi-one-dimensional quantum spin-tube compound Sul-Cu2 Cl4 that in zero field has a nonmagnetic spin-liquid ground state. The experiments reveal an incommensurate chiral high-field phase stabilized by a geometric frustration of the magnetic interactions. The measured critical exponents β≈0.235 and ν≈0.34 at Hc ≈3.7? T point to an unusual subcritical scaling regime and may reflect the chiral nature of the quantum critical point.",

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AU - Grenier, B.

AU - Regnault, L. P.

AU - Ressouche, E.

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N2 - Neutron scattering is used to study magnetic-field-induced ordering in the quasi-one-dimensional quantum spin-tube compound Sul-Cu2 Cl4 that in zero field has a nonmagnetic spin-liquid ground state. The experiments reveal an incommensurate chiral high-field phase stabilized by a geometric frustration of the magnetic interactions. The measured critical exponents β≈0.235 and ν≈0.34 at Hc ≈3.7? T point to an unusual subcritical scaling regime and may reflect the chiral nature of the quantum critical point.

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Dimensional crossover in a spin-liquid-to-helimagnet quantum phase transition

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