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Magnetism induced by interlayer electrons in the quasi-two-dimensional electrideY2C: Inelastic neutron scattering study
Physical Review B ( IF 3.2 ) Pub Date : 2020-12-04 , DOI: 10.1103/physrevb.102.224406 Hiromu Tamatsukuri , Youichi Murakami , Yoshio Kuramoto , Hajime Sagayama , Masato Matsuura , Yukinobu Kawakita , Satoru Matsuishi , Yasuhito Washio , Takeshi Inoshita , Noriaki Hamada , Hideo Hosono
Physical Review B ( IF 3.2 ) Pub Date : 2020-12-04 , DOI: 10.1103/physrevb.102.224406 Hiromu Tamatsukuri , Youichi Murakami , Yoshio Kuramoto , Hajime Sagayama , Masato Matsuura , Yukinobu Kawakita , Satoru Matsuishi , Yasuhito Washio , Takeshi Inoshita , Noriaki Hamada , Hideo Hosono
Magnetic excitations in layered electride have been found by inelastic neutron scattering. We have observed weak but clear magnetic scattering around the wave number , but no magnetic order down to the lowest temperature measured (7 K). The imaginary part of the dynamical susceptibility deduced is well described by the Lorentz function of energy for each momentum . The width of the Lorentzian is proportional to with at K. We have also found that with increasing the magnetic form factor decays faster than that of a electron in a single Y atom, which indicates a more extended magnetic moment in . These results provide experimental evidence that the itinerant magnetism in originates from the anionic electrons that reside in the interlayers. The Curie-Weiss-like behavior of the magnetic susceptibility reported in is ascribed to the mode coupling effects of spin fluctuations.
中文翻译:
准二维电子Y2C中层间电子诱导的磁性:非弹性中子散射研究
分层驻极体中的磁激发 通过非弹性中子散射已经发现。我们已经观察到波数周围有微弱但清晰的磁散射,但没有磁阶降到最低实测温度(7 K)。能量的洛伦兹函数很好地描述了动态磁化率的虚部 每个动量 。宽度 洛伦兹的比例与 与 在 K.我们还发现随着 磁性形状因子的衰减速度比 单个Y原子中的电子,这表明 。这些结果提供了实验证据,证明了源于驻留在中间层中的阴离子电子。报告的磁化率类似于居里-魏斯行为 归因于自旋波动的模式耦合效应。
更新日期:2020-12-04
中文翻译:
准二维电子Y2C中层间电子诱导的磁性:非弹性中子散射研究
分层驻极体中的磁激发 通过非弹性中子散射已经发现。我们已经观察到波数周围有微弱但清晰的磁散射,但没有磁阶降到最低实测温度(7 K)。能量的洛伦兹函数很好地描述了动态磁化率的虚部 每个动量 。宽度 洛伦兹的比例与 与 在 K.我们还发现随着 磁性形状因子的衰减速度比 单个Y原子中的电子,这表明 。这些结果提供了实验证据,证明了源于驻留在中间层中的阴离子电子。报告的磁化率类似于居里-魏斯行为 归因于自旋波动的模式耦合效应。