Multi-band electronic structure of ferromagnetic CeRuPO

Masaya Takahashi, Daiki Ootsuki, Masafumi Horio, Masashi Arita, Hirofumi Namatame, Masaki Taniguchi, Naurang L. Saini, Hitoshi Sugawara, Takashi Mizokawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We have studied the multi-band electronic structure of ferromagnetic CeRuPO (TC = 15 K) by means of angle-resolved photoemission spectroscopy (ARPES). The ARPES results show that three hole bands exist around the zone center and two of them cross the Fermi level (EF). Around the zone corner, two electron bands are observed and cross EF. These hole and electron bands, which can be assigned to the Ru 4d bands, are basically consistent with the band-structure calculation including their orbital characters. However, one of the electron bands with Ru 4d 3z2 − r2 character is strongly renormalized indicating correlation effect due to hybridization with the Ce 4 f orbitals. The Ru 4d 3z2 − r2 band changes across TC suggesting that the out-of-plane 3z2 − r2 orbital channel plays essential roles in the ferromagnetism.

Original languageEnglish
Article number043703
Journaljournal of the physical society of japan
Volume87
Issue number4
DOIs
Publication statusPublished - 2018

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Multi-band electronic structure of ferromagnetic CeRuPO'. Together they form a unique fingerprint.

Cite this