Journal Article

FZJ-2018-02078

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spin-Glass Ground State in a Triangular-Lattice Compound YbZnGaO 4

Ma, Z. (Corresponding author) ; Wang, J. (Corresponding author) ; Dong, Z.-Y. (Corresponding author) ; Zhang, J. (Corresponding author)Extern* ; Li, S. ; Zheng, S.-H. ; Yu, Y. ; Wang, W. ; Che, L. ; Ran, K. ; Bao, S. ; Cai, Z. ; Čermák, P.FZJ* ; Schneidewind, A.FZJ* ; Yano, S. ; Gardner, J. S. ; Lu, X. ; Yu, S.-L. ; Liu, J.-M. ; Li, S. ; Li, J.-X. ; Wen, J.

2018
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/18222  doi:10.1103/PhysRevLett.120.087201

Abstract: We report on comprehensive results identifying the ground state of a triangular-lattice structuredYbZnGaO4 as a spin glass, including no long-range magnetic order, prominent broad excitation continua,and the absence of magnetic thermal conductivity. More crucially, from the ultralow-temperature acsusceptibility measurements, we unambiguously observe frequency-dependent peaks around 0.1 K,indicating the spin-glass ground state. We suggest this conclusion holds also for its sister compoundYbMgGaO4, which is confirmed by the observation of spin freezing at low temperatures. We considerdisorder and frustration to be the main driving force for the spin-glass phase.

Keyword(s): Basic research (1st) ; Magnetism (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
2. Streumethoden (JCNS-2)

Research Program(s):

1. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Experiment(s):

1. PANDA: Cold three axes spectrometer (SR2)

Appears in the scientific report 2018

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Database coverage:
; ; ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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