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Tomonaga-Luttinger Liquid Spin Dynamics in the Quasi-One-Dimensional Ising-Like Antiferromagnet BaCo2V2O8

Faure, Quentin (author)
Univ Grenoble Alpes, CEA, IRIG, MEM,MED, F-38000 Grenoble, France.;Univ Grenoble Alpes, Inst NEEL, F-38042 Grenoble, France.
Takayoshi, Shintaro (author)
Max Planck Inst Phys Komplexer Syst, D-01307 Dresden, Germany.;Univ Geneva, Dept Quantum Matter Phys, CH-1211 Geneva, Switzerland.
Simonet, Virginie (author)
Univ Grenoble Alpes, Inst NEEL, F-38042 Grenoble, France.
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Grenier, Beatrice (author)
Univ Grenoble Alpes, CEA, IRIG, MEM,MED, F-38000 Grenoble, France.
Månsson, Martin, As. Prof. 1976- (author)
KTH,Tillämpad materialfysik,Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland
White, Jonathan S. (author)
Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland.
Tucker, Gregory S. (author)
Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland.;Ecole Polytech Fed Lausanne, Inst Phys, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland.
Ruegg, Christian (author)
Univ Geneva, Dept Quantum Matter Phys, CH-1211 Geneva, Switzerland.;Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland.;Paul Scherrer Inst, Neutrons & Muons Res Div, CH-1211 Villigen, Switzerland.
Lejay, Pascal (author)
Univ Grenoble Alpes, Inst NEEL, F-38042 Grenoble, France.
Giamarchi, Thierry (author)
Univ Geneva, Dept Quantum Matter Phys, CH-1211 Geneva, Switzerland.
Petit, Sylvain (author)
Univ Paris Saclay, CEA Saclay, CNRS, Lab Leon Brillouin,CEA, F-91191 Gif Sur Yvette, France.
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Univ Grenoble Alpes, CEA, IRIG, MEM,MED, F-38000 Grenoble, France;Univ Grenoble Alpes, Inst NEEL, F-38042 Grenoble, France. Max Planck Inst Phys Komplexer Syst, D-01307 Dresden, Germany.;Univ Geneva, Dept Quantum Matter Phys, CH-1211 Geneva, Switzerland. (creator_code:org_t)
American Physical Society, 2019
2019
English.
In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 123:2
Related links:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Combining inelastic neutron scattering and numerical simulations, we study the quasi-one-dimensional Ising anisotropic quantum antiferromagnet BaCo2V2O8 in a longitudinal magnetic field. This material shows a quantum phase transition from a Neel ordered phase at zero field to a longitudinal incommensurate spin density wave at a critical magnetic field of 3.8 T. Concomitantly, the excitation gap almost closes and a fundamental reconfiguration of the spin dynamics occurs. These experimental results are well described by the universal Tomonaga-Luttinger liquid theory developed for interacting spinless fermions in one dimension. We especially observe the rise of mainly longitudinal excitations, a hallmark of the unconventional low-field regime in Ising-like quantum antiferromagnetic chains.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

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