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Journal articles
Gapless Spin Liquid Ground State in the S = 1 / 2 Vanadium Oxyfluoride Kagome Antiferromagnet [ NH 4 ] 2 [ C 7 H 14 N ] [ V 7 O 6 F 18 ]
Abstract : The vanadium oxyfluoride [NH(4)](2)[C(7)H(14)N][V(7)O(6)F(18)] (DQVOF) is a geometrically frustrated magnetic bilayer material. The structure consists of S = 1/2 kagome planes of V(4+) d(1) ions with S = 1 V(3+) d(2) ions located between the kagome layers. Muon spin relaxation measurements demonstrate the absence of spin freezing down to 40 mK despite an energy scale of 60 K for antiferromagnetic exchange interactions. From magnetization and heat capacity measurements we conclude that the S = 1 spins of the interplane V(3+) ions are weakly coupled to the kagome layers, such that DQVOF can be viewed as an experimental model for S = 1/2 kagome physics, and that it displays a gapless spin liquid ground state.
Cited literature [20 references]
https://hal-cea.archives-ouvertes.fr/cea-01477926
Contributor : Dominique Girard <>
Submitted on : Monday, February 27, 2017 - 5:31:05 PM
Last modification on : Tuesday, October 20, 2020 - 1:14:02 PM
Long-term archiving on: : Sunday, May 28, 2017 - 2:01:02 PM
Contributor : Dominique Girard <>
Submitted on : Monday, February 27, 2017 - 5:31:05 PM
Last modification on : Tuesday, October 20, 2020 - 1:14:02 PM
Long-term archiving on: : Sunday, May 28, 2017 - 2:01:02 PM
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1306.4269.pdf
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