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Research paper thumbnail of Studies on Magnetism of the Layered Organic Antiferromagnet Bordered on a Superconducting Phase by Muon Spin Rotation and Magnetization Measurements

Journal of the Physical Society of Japan, 2016

The magnetism of deuterated κ-(BEDT-TTF) 2 Cu[N(CN) 2 ]Br, which was situated in the vicinity of ... more The magnetism of deuterated κ-(BEDT-TTF) 2 Cu[N(CN) 2 ]Br, which was situated in the vicinity of a superconductorantiferromagnet phase boundary, was investigated by magnetization and muon spin rotation (μSR) measurements. Magnetic ordering was observed by μSR measurement under the zero-field condition. Internal fields at muon sites were lower than those of κ-(BEDT-TTF) 2 Cu[N(CN) 2 ]Cl. The magnetic transition temperature T N was found to be increased by applying a magnetic field in the magnetization measurements. These two measurements enabled us to conclude that T N at zero field was 11.8 ± 0.7 K, which was significantly lower than the value reported in NMR studies (14-15 K). This finding suggests that this material undergoes Néel order and Mott transition at very close but separated temperatures.

Research paper thumbnail of Studies on Magnetism of the Layered Organic Antiferromagnet Bordered on a Superconducting Phase by Muon Spin Rotation and Magnetization Measurements

Journal of the Physical Society of Japan, 2016

The magnetism of deuterated κ-(BEDT-TTF) 2 Cu[N(CN) 2 ]Br, which was situated in the vicinity of ... more The magnetism of deuterated κ-(BEDT-TTF) 2 Cu[N(CN) 2 ]Br, which was situated in the vicinity of a superconductorantiferromagnet phase boundary, was investigated by magnetization and muon spin rotation (μSR) measurements. Magnetic ordering was observed by μSR measurement under the zero-field condition. Internal fields at muon sites were lower than those of κ-(BEDT-TTF) 2 Cu[N(CN) 2 ]Cl. The magnetic transition temperature T N was found to be increased by applying a magnetic field in the magnetization measurements. These two measurements enabled us to conclude that T N at zero field was 11.8 ± 0.7 K, which was significantly lower than the value reported in NMR studies (14-15 K). This finding suggests that this material undergoes Néel order and Mott transition at very close but separated temperatures.

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