Journal
PHYSICAL REVIEW B
Volume 85, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.054421
Keywords
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Funding
- Global COE (Core Research and Engineering of Advanced Materials-Interdisciplinary Education Center for Materials Science) from the MEXT, Japan [G10, 20340089]
- Russian Foundation for Basic Research [12-02-00557-a, 10-02-01105-a]
- Program of Russian Scientific Schools
- Grants-in-Aid for Scientific Research [20340089] Funding Source: KAKEN
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We present the results of the magnetization and dielectric constant measurements on untwinned single-crystal samples of the frustrated S = 1/2 chain cuprate LiCu2O2. Magnetic phase transitions were observed. A spin-flop transition of the spiral spin plane was observed for the field orientations H parallel to a, b. The second magnetic transition was observed at H approximate to 15 T for all three principal field directions. This high-field magnetic phase is discussed as a collinear spin-modulated phase, which is expected for an S = 1/2 nearest-neighbor ferromagnetic and next-nearest-neighbor antiferromagnetic chain system.
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