Resonant Magnetic X-ray Diffraction Study on Successive Metamagnetic Transitions in TbB4

被引：17

作者：

Inami, Toshiya ^{[1
]}

Ohwada, Kenji ^{[1
]}

Matsuda, Yasuhiro H. ^{[2
]}

Ouyang, Zhong Wen ^{[2
]}

Nojiri, Hiroyuki ^{[2
]}

Matsumura, Takeshi ^{[3
]}

Okuyama, Daisuke ^{[4
]}

Murakami, Youichi ^{[4
]}

机构：

[1] Japan Atom Energy Agcy, Synchrotron Radiat Res Unit, Sayo, Hyogo 6795148, Japan

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[3] Hiroshima Univ, ADSM, Hiroshima 7398530, Japan

[4] Tohoku Univ, Fac Sci, Dept Phys, Sendai, Miyagi 9808578, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2009年 / 78卷 / 03期

关键词：

resonant magnetic x-ray diffraction; Shastry-Sutherland lattice; rare-earth tetraboride; HIGH-FIELD MAGNETIZATION; QUADRUPOLAR FRUSTRATION; GROUND-STATE; SCATTERING; DYB4;

D O I：

10.1143/JPSJ.78.033707

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Resonant magnetic x-ray diffraction experiments oil the Shastry-Sutherland lattice TbB4 were carried out under pulsed magnetic fields up to 30 T at 8 K, TbB4 exhibits a multi-step magnetization process above 16 T below about 20 K when magnetic fields are applied along the c-axis. We examined the intensity of the 010 magnetic reflection as a function of magnetic field and found that the magnetization plateau phases are. accompanied by large XY components of magnetic moments. We propose novel magnetic structures which consist of XY spins and Ising spins for the plateau phases. We also propose that energy level crossing and its inherent degeneracy give rise to the Successive metamagnetic transitions in TbB4.

引用

页数：4

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