Magnetic Blue Phase in the Chiral Itinerant Magnet MnSi

被引：54
|
作者：
Hamann, A. [1 ,3 ]
Lamago, D. [1 ,2 ]
Wolf, Th. [1 ]
v Loehneysen, H. [1 ,3 ]
Reznik, D. [1 ,4 ]
机构：
[1] KIT, Inst Solid State Phys, D-76131 Karlsruhe, Germany
[2] CEA Saclay, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France
[3] KIT, Inst Phys, D-76131 Karlsruhe, Germany
[4] Univ Colorado, Dept Phys, Boulder, CO 80309 USA
来源：
PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 03期
关键词：
PARAMAGNETIC SPIN FLUCTUATIONS; FERROMAGNET MNSI; ORDER; FIELD; SANS;
D O I：
10.1103/PhysRevLett.107.037207
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Chiral nematic liquid crystals sometimes form blue phases characterized by spirals twisting in different directions. By combining model calculations with neutron-scattering experiments, we show that the magnetic analogue of blue phases does form in the chiral itinerant magnet MnSi in a large part of the phase diagram. The properties of this blue phase explain a number of previously reported puzzling features of MnSi such as partial magnetic order and a two-component specific-heat and thermal-expansion anomaly at the magnetic transition.
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页数：4
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