Spin liquid state in the S = 1/2 triangular lattice Ba3CuSb2O9 |
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| Authors: | Zhou H D Choi E S Li G Balicas L Wiebe C R Qiu Y Copley J R D Gardner J S |
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| Affiliation: | National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306-4005, USA. zhou@magnet.fsu.edu |
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| Abstract: | The synthesis and characterization of Ba3CuSb2O9, which has a layered array of Cu2+ spins in a triangular lattice, are reported. The magnetic susceptibility and neutron scattering experiments of this material show no magnetic ordering down to 0.2 K with a θ(CW) = -55 K. The magnetic specific heat reveals a T-linear dependence with a γ = 43.4 mJ K(-2) mol(-1) below 1.4 K. These observations suggest that Ba3CuSb2O9 is a new quantum spin liquid candidate with a S = 1/2 triangular lattice. |
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