Physics of low-carrier system detected by neutron and X-ray scattering: Ce-monopnictides case

被引:27
作者
Kohgi, M
Iwasa, K
Osakabe, T
机构
[1] Tokyo Metropolitan Univ, Dept Phys, Hachioji, Tokyo 1920397, Japan
[2] Japan Atom Energy Res Inst, ASRC, Tokai, Ibaraki 3191195, Japan
关键词
low-carrier system; neutron scattering; X-ray diffraction; CeP; CeAs; CeSb; Ce-monopnictide;
D O I
10.1016/S0921-4526(99)01051-0
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The origin of the unusual magnetic properties of Ce-monopnictide, CeX (X = P,As,Sb,Bi), whose carrier density is very low, is discussed on the basis of the physical picture obtained from recent neutron and X-ray scattering experiments. It is revealed that the unusual properties of the compounds originate from the appearance of T(8)-like Ce ions, the moment value of which is about 2 mu(B), among Ce ions with Gamma(7) crystal field ground state. The 2 mu(B) Ce ions appear in the form of ferromagnetic sheets of (0 0 1) planes, which form stacking magnetic structures of various sequences with sandwiching Gamma(7) Ce planes depending on the carrier density. The formation of the ferromagnetic sheets of 2 mu(B) Ce in the Gamma(7) Ce lattice is ascribed to the combined effects of strong p-f mixing and carrier localization due to the low-carrier density. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:417 / 422
页数:6
相关论文
共 39 条
  • [1] HIGH-PRESSURE NEUTRON AND MAGNETIZATION INVESTIGATIONS OF THE MAGNETIC-ORDERING IN CESB
    CHATTOPADHYAY, T
    BURLET, P
    ROSSATMIGNOD, J
    BARTHOLIN, H
    VETTIER, C
    VOGT, O
    [J]. PHYSICAL REVIEW B, 1994, 49 (21): : 15096 - 15104
  • [2] Appearance of ferromagnetism in CeP at high pressure
    Goncharenko, IN
    Link, P
    Mignot, JM
    Kohgi, M
    Iwasa, K
    Haga, Y
    Suzuki, T
    [J]. PHYSICA B-CONDENSED MATTER, 1999, 259-61 : 306 - 308
  • [3] HAGA Y, 1995, THESIS TOHOKU U
  • [4] FERMI-SURFACE OF LASB AND LABI
    HASEGAWA, A
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1985, 54 (02) : 677 - 684
  • [5] ELECTRONIC-STRUCTURE OF LA MONOPNICTIDES
    HASEGAWA, A
    [J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1980, 13 (33): : 6147 - 6156
  • [6] NEUTRON SPECTROSCOPY IN THE CERIUM MONOPNICTIDES
    HEER, H
    FURRER, A
    HALG, W
    VOGT, O
    [J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1979, 12 (23): : 5207 - 5220
  • [7] LOW-TEMPERATURE MAGNETIC PHASE-TRANSITIONS OF CEBI AND CESB
    HULLIGER, F
    LANDOLT, M
    OTT, HR
    SCHMELCZER, R
    [J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 1975, 20 (3-4) : 269 - 284
  • [8] Evidence for crystal-lattice modulation due to spatially restricted enhancement of mixing effect in the low-carrier system CeSb
    Iwasa, K
    Arakaki, Y
    Kohgi, M
    Suzuki, T
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1999, 68 (08) : 2498 - 2501
  • [9] X-ray diffraction study on thermal properties of crystal lattices in CeP and CeAs
    Iwasa, K
    Kohgi, M
    Ohsumi, H
    Tajima, K
    Takeuchi, T
    Haga, Y
    Uesawa, A
    Suzuki, T
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1999, 68 (03) : 881 - 886
  • [10] Polarized-neutron study of the magnetic-polaron state in CeP
    Iwasa, K
    Kohgi, M
    Haga, Y
    Suzuki, T
    Kakurai, K
    Nishi, M
    Nakajima, K
    Link, P
    Gukasov, A
    Mignot, JM
    [J]. PHYSICA B-CONDENSED MATTER, 1999, 259-61 : 285 - 287