DIRECT EVIDENCE FOR ITINERANT MAGNETITE ABOVE AND BELOW THE VERWEY TRANSITION TEMPERATURE
DIRECT EVIDENCE FOR ITINERANT MAGNETITE ABOVE AND BELOW THE VERWEY TRANSITION TEMPERATURE
复制标题
高于和低于韦尔韦转变温度的流动磁铁矿的直接证据
DOI：
10.1142/s0218625x02003147
复制
发表时间：
2002
影响因子：
1.1
通讯作者：
F. Komori
中科院分区：
文献类型：
--
作者：
Y. Cai;K. Nakatsuji;S. Ohno;T. Iimori;M. Yamada;F. Komori
采用同步辐射自旋分辨和角度分辨光谱学研究了Pt（111）表面Fe3O4（111）薄膜的价电子态。在300 K和100 K，高于和低于Verwey转变温度（TV ~ 120 K）时，获得了态的多数自旋和少数自旋偏密度（DOS）。在3d区域，光谱在100k时仍然表现出明显的K依赖性。这提供了最直接的实验证据，证明三维电子即使在T < TV时也是流动的。
The valence electronic states of Fe3O4(111) films on Pt(111) were studied using temperature-dependent spin- and angle-resolved photoemission spectroscopy with synchrotron radiation. The majority- and minority-spin partial density of states (DOS) has been obtained at 300 K and 100 K, above and below the Verwey transition temperature (TV ~ 120 K). The spectra still show substantial k-dependence at 100 K in the 3d region. This provides the most direct experimental evidence that the 3d electrons are itinerant even at T < TV.