Spin liquid state in the 3D frustrated antiferromagnet : NMR and muon spin relaxation studies
- Ames Lab., Ames, IA (United States); CNRS, Univ. Paris-Sud, Univ. Paris-Saclay, Orsay Cedex (France)
- CNRS, Univ. Paris-Sud, Univ. Paris-Saclay, Orsay Cedex (France)
- Univ. of Hyderabad, Central Univ., Hyderabad (India); National Taiwan Univ., Taipei (Taiwan)
- Indian Institute of Technology Bombay Powai Mumbai (India)
- Max Planck Institute for Chemical Physics of Solids, Dresden (Germany)
- National Taiwan Univ., Taipei (Taiwan)
- Paul Scherrer Institute, Villigen PSI (Switzerland)
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
In this study, PbCuTe2O6 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 Cu2+ 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 pointing 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/T1 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.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- PIIF-GA-2013-627322; AC02-07CH11358; ANR-12-BS04- 0021
- OSTI ID:
- 1253757
- Alternate ID(s):
- OSTI ID: 1241436
- Report Number(s):
- IS-J-8945; PRLTAO
- Journal Information:
- Physical Review Letters, Vol. 116, Issue 10; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Phase Formation Studies of Lead(II) Copper(II) Oxotellurates: The Crystal Structures of Dimorphic PbCuTeO 5 , PbCuTe 2 O 6 , and [Pb 2 Cu 2 (Te 4 O 11 )](NO 3 ) 2 : Phase Formation Studies of Lead(II) Copper(II) Oxotellurates: The Crystal Structures of Dimorphic PbCuTeO
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journal | August 2018 |
A spin–orbital-entangled quantum liquid on a honeycomb lattice
|
journal | February 2018 |
Quantum magnetism in minerals
|
journal | July 2018 |
Electrodynamics of quantum spin liquids
|
journal | April 2018 |
Quantum Spin Liquid States | text | January 2016 |
Electrodynamics of quantum spin liquids | text | January 2018 |
Quantum Magnetism in Minerals | text | January 2018 |
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