Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2007-02-26
Phys. Rev. B 75, 165102 (2007)
Physics
Condensed Matter
Strongly Correlated Electrons
21 pages, 11 figures, To appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.75.165102
Magnetic properties under the external field are investigated in low-carrier two-band systems, which may explain the nontrivial phase boundary found in temperature vs. magnetic field diagram discovered in some materials, such as filled-skutterudite compound CeOs$_{4}$Sb$_{12}$. Analysis is made both for the periodic Anderson model with the small-dispersive $f$ band and the simplified two parabolic band model in the vicinity of the Fermi level. The magnetic susceptibilities are calculated by using the random phase approximation. It is shown that the maximum value of the magnetic susceptibility perpendicular to the external field is enhanced and yields the anomalous phase boundary. By applying the magnetic field, the phase boundary shifts to higher temperature region in the insulating state with a small band gap. On the other hand, the similar phase boundary also appears in the semi-metallic states, in which the structure of the density of states in the vicinity of the Fermi level and the finite temperature effect are essential.
Imai Yoshiki
Saso Tetsuro
No associations
LandOfFree
Anomalous magnetic phase diagram in low-carrier two-band systems and possible application to CeOs4Sb12 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Anomalous magnetic phase diagram in low-carrier two-band systems and possible application to CeOs4Sb12, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anomalous magnetic phase diagram in low-carrier two-band systems and possible application to CeOs4Sb12 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-131266