Octupole Moment as a Hidden Order Parameter in Orbitally Degenerate f-Electron Systems : Condensed Matter: Electronic Properties, etc.
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概要
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Possibility of a novel pseudoscalar (octupole) order is studied theoretically for orbitally degenerate systems with strong spin-orbit coupling such as Ce_xLa_<1-x>B_6. We argue that coexistence of an octupole order parameter and antiferromagnetic fluctuation should lead to marked softening of the elastic constant by a mode-mixing effect. Nonlinear coupling between dipole, quadrupole and octupole fluctuations is taken into account in terms of a Ginzburg-Landau-type functional which is derived microscopically through a path integral.
- 社団法人日本物理学会の論文
- 2000-03-15
著者
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Kuramoto Yoshio
Department Of Physics Tohoku University
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Kuramoto Yoshio
Department Of Applied Physics Tohoku University
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Kusunose Hiroaki
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Kuramoto Yoshio
Department Of Applied Physics Faculty Of Engineering Tohoku University
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KURAMOTO Yoshio/KUSUNOSE
Department of Physics, Tohoku University/Department of Physics, Tohoku University
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