The phase diagram and susceptibility of LiNiO2 |
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| Institution: | 1. College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, PR China;2. Huaiyin Institute of Technology, Huaiyin, 223001, PR China;1. Department of Physics and Meteorology, Indian Institute of Technology, Kharagpur 721302, India;2. Materials Science Centre, Indian Institute of Technology, Kharagpur 721302, India;3. Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India;1. School of Mechanical Engineering, Inner Mongolia University of Science & Technology, Baotou, Inner Mongolia, 014010, PR China;2. School of Life Science and Technology, Inner Mongolia University of Science & Technology, Baotou, Inner Mongolia, 014010, PR China;1. WCU Multiscale Mechanical Design Division, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Republic of Korea;2. Department of Mechanical Engineering, Kyung Hee University, Yongin 446-701, Republic of Korea;3. Department of Materials Science and Engineering and Department of Physics, The University of Texas at Dallas, Richardson, TX 75080, USA |
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| Abstract: | The phase diagram and the temperature dependence of the susceptibility of a four-site spin system with orbital degeneracy have been calculated by taking into account the triangular lattice symmetry. The results indicate that the ground state of the spin–orbital system can be spin disordered even in the case of the large Hund's interaction and the anisotropic orbital hopping. The susceptibility and the short correlation show antiferromagnetic in low temperature, but ferromagnetic in high temperature. These conclusions are in agreement with the recent experimental observations on the material LiNiO2. |
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