期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 444, 期 -, 页码 162-167出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2006.11.028
关键词
delta-Pu; j-j coupling scheme; multipole
We propose a multipole scenario to understand the absence of magnetism in delta-Pu on the basis of a microscopic model constructed from a j-j coupling scheme. In order to determine the multipole state, we employ a concept of the optimization of multipole susceptibility. By using an exact diagonalization technique for 4-site fcc lattice, we depict the phase diagram, including the states characterized by quadrupole and octupole fluctuations. We discuss the region in our phase diagram with possible relevance to the actual situation for delta-Pu. (c) 2006 Elsevier B.V. All rights reserved.
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