Nuclear Magnetic Resonance Reveals Disordered Level-Crossing Physics in the Bose-Glass Regime of the Br-Doped Ni(Cl1xBrx)24SC(NH2)2 Compound at a High Magnetic Field

Anna Orlova, Rémi Blinder, Edwin Kermarrec, Maxime Dupont, Nicolas Laflorencie, Sylvain Capponi, Hadrien Mayaffre, Claude Berthier, Armando Paduan-Filho, and Mladen Horvatić
Phys. Rev. Lett. 118, 067203 – Published 9 February 2017

Abstract

By measuring the nuclear magnetic resonance (NMR) T11 relaxation rate in the Br (bond) doped DTN compound, Ni(Cl1xBrx)24SC(NH2)2(DTNX), we show that the low-energy spin dynamics of its high magnetic field “Bose-glass” regime is dominated by a strong peak of spin fluctuations found at the nearly doping-independent position H*13.6T. From its temperature and field dependence, we conclude that this corresponds to a level crossing of the energy levels related to the doping-induced impurity states. Observation of the local NMR signal from the spin adjacent to the doped Br allowed us to fully characterize this impurity state. We have thus quantified a microscopic theoretical model that paves the way to better understanding of the Bose-glass physics in DTNX, as revealed in the related theoretical study [M. Dupont, S. Capponi, and N. Laflorencie, Phys. Rev. Lett. 118, 067204 (2017).].

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  • Received 7 July 2016

DOI:https://doi.org/10.1103/PhysRevLett.118.067203

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Anna Orlova1, Rémi Blinder1,*, Edwin Kermarrec1,†, Maxime Dupont2, Nicolas Laflorencie2, Sylvain Capponi2, Hadrien Mayaffre1, Claude Berthier1, Armando Paduan-Filho3, and Mladen Horvatić1,‡

  • 1Laboratoire National des Champs Magnétiques Intenses, LNCMI-CNRS (UPR3228), EMFL, UGA, UPS, and INSA, Boîte Postale 166, 38042, Grenoble Cedex 9, France
  • 2Laboratoire de Physique Théorique, IRSAMC, Université de Toulouse, CNRS, 31062 Toulouse, France
  • 3Instituto de Física, Universidade de São Paulo, 05315-970 São Paulo, Brazil

  • *Present address: CEA, INAC, SPRAM (UMR5819 CEA/CNRS/UJF), 17 rue des Martyrs, 38054 Grenoble cedex 9, France.
  • Present address: Laboratoire de Physique des Solides, Université Paris-Sud, UMR CNRS 8502, 91405 Orsay, France.
  • mladen.horvatic@lncmi.cnrs.fr

See Also

Disorder-Induced Revival of the Bose-Einstein Condensation in Ni(Cl1xBrx)24SC(NH2)2 at High Magnetic Fields

Maxime Dupont, Sylvain Capponi, and Nicolas Laflorencie
Phys. Rev. Lett. 118, 067204 (2017)

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Vol. 118, Iss. 6 — 10 February 2017

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