Itinerant helimagnet MnSi
作者： Sergei M Stishov , A E Petrova
DOI: 10.3367/UFNE.0181.201111B.1157
关键词: Phase diagram 、 Magnetic structure 、 Spin states 、 Critical phenomena 、 Electrical resistivity and conductivity 、 Phase (matter) 、 Electron 、 Materials science 、 Condensed matter physics 、 Paramagnetism
摘要: Manganese silicide (MnSi), a model helimagnetic compound, crystallizes in B20 structure, whose non-centro-symmetric space group allows helical (chiral) magnetic structure. The phase transition temperature of MnSi (29 K at atmospheric pressure) decreases with pressure and approaches zero about 1.4 GPa. This fact, pointing to possible quantum critical phenomena, has prompted high-pressure studies that have revealed number fascinating particular, the non-Fermi-liquid behavior electrical resistivity unusual spin state (partial ordering) paramagnetic phase. We discuss experimental results characterizing physical properties diagram same time forming basis current ideas physics strongly correlated chiral electron systems.
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