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Title: Frustrated ground state in the metallic Ising antiferromagnet Nd 2 Ni 2 In

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Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Materials
Additional Journal Information:
Journal Volume: 1; Journal Issue: 5; Related Information: CHORUS Timestamp: 2017-10-06 13:56:16; Journal ID: ISSN 2475-9953
American Physical Society
Country of Publication:
United States

Citation Formats

Sala, G., Mašková, S., and Stone, M. B.. Frustrated ground state in the metallic Ising antiferromagnet Nd 2 Ni 2 In. United States: N. p., 2017. Web. doi:10.1103/PhysRevMaterials.1.054404.
Sala, G., Mašková, S., & Stone, M. B.. Frustrated ground state in the metallic Ising antiferromagnet Nd 2 Ni 2 In. United States. doi:10.1103/PhysRevMaterials.1.054404.
Sala, G., Mašková, S., and Stone, M. B.. 2017. "Frustrated ground state in the metallic Ising antiferromagnet Nd 2 Ni 2 In". United States. doi:10.1103/PhysRevMaterials.1.054404.
title = {Frustrated ground state in the metallic Ising antiferromagnet Nd 2 Ni 2 In},
author = {Sala, G. and Mašková, S. and Stone, M. B.},
abstractNote = {},
doi = {10.1103/PhysRevMaterials.1.054404},
journal = {Physical Review Materials},
number = 5,
volume = 1,
place = {United States},
year = 2017,
month =

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on October 6, 2018
Publisher's Accepted Manuscript

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  • We use inelastic neutron scattering measurements to examine the inter-metallic Ising anti-ferromagnet \NNI. The dynamical structure factor displays a spectrum with multiple crystal field excitations. These crystal field excitations consist of a set of four transitions covering a range of energies between $4$ and $80$ meV. The analysis of the crystalline electric field scheme confirms the Ising nature of the spins and their orientation as proposed by previous studies. We characterize \NNI~as a large moment intermetallic antiferromagnet with the potential to support a geometrically frustrated Shastry-Sutherland lattice.
  • In this study, PbCuTe 2O 6 is a rare example of a spin liquid candidate featuring a three-dimensional magnetic lattice. Strong geometric frustration arises from the dominant antiferromagnetic interaction that generates a hyperkagome network of Cu 2+ ions although additional interactions enhance the magnetic lattice connectivity. Through a combination of magnetization measurements and local probe investigations by NMR and muon spin relaxation down to 20 mK, we provide robust evidence for the absence of magnetic freezing in the ground state. The local spin susceptibility probed by the NMR shift hardly deviates from the macroscopic one down to 1 K pointingmore » to a homogeneous magnetic system with a low defect concentration. The saturation of the NMR shift and the sublinear power law temperature (T) evolution of the 1/T 1 NMR relaxation rate at low T point to a nonsinglet ground state favoring a gapless fermionic description of the magnetic excitations. Below 1 K a pronounced slowing down of the spin dynamics is witnessed, which may signal a reconstruction of spinon Fermi surface. Nonetheless, the compound remains in a fluctuating spin liquid state down to the lowest temperature of the present investigation.« less
  • We have investigated polycrystalline samples of the zigzag chain system BaTb 2O 4 with magnetic susceptibility, heat capacity, neutron powder diffraction, and muon spin relaxation measurements. No magnetic transitions are observed in the bulk measurements, while neutron diffraction reveals low-temperature, short-range, intrachain magnetic correlations between Tb 3+ ions. Muon spin relaxation measurements indicate that these correlations are dynamic, as the technique detects no signatures of static magnetism down to 0.095 K. Altogether these findings provide strong evidence for a spin liquid ground state in BaTb 2O 4.
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