价跃迁体系EuPtP中c - f杂化效应的观察

Physica Status Solidi (c) Pub Date : 2017-06-01 DOI:10.1002/pssc.201600185

H. Anzai, K. Ichiki, E. Schwier, H. Iwasawa, M. Arita, H. Sato, K. Shimada, H. Namatame, M. Taniguchi, A. Mitsuda, H. Wada, K. Mimura

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引用次数: 0

摘要

我们利用角分辨光谱学研究了EuPtP的电子结构，它在T1 = 247k和T2 = 2011k时表现出两个一阶价跃迁。在T2以下，我们观察到在大块Eu 4f和传导带的交叉点有一个能隙。波段色散的形状用基于周期性安德森模型的杂化带图来描述。我们的研究结果证实了EuPtP低温相的c-f杂化效应。

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Observation of the c ‐ f hybridization effect in valence‐transition system EuPtP

We study the electronic structure of EuPtP, which exhibits two first-order valence transitions at T1 = 247 K and T2 = 201 K, using angle-resolved photoemission spectroscopy. Below T2, we observe an energy gap at the crossing point of the bulk Eu 4f and conduction bands. The shape of band dispersions is described by a hybridization-band picture based on the periodic Anderson model. Our results demonstrate the c-f hybridization effect in the low-temperature phase of EuPtP.

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Physica Status Solidi (c)

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