Electronic structure of strained (La0.85Ba0.15)MnO3 thin films with room-temperature ferromagnetism investigated by hard x-ray photoemission spectroscopy

Hidekazu Tanaka, Yasutaka Takata, Koji Horiba, Munetaka Taguchi, Ashish Chainani, Shik Shin, Daigo Miwa, Kenji Tamasaku, Yoshinori Nishino, Tetsuya Ishikawa, Eiji Ikenaga, Mitsuhiro Awaji, Akihisa Takeuchi, Tomoji Kawai, and Keisuke Kobayashi
Phys. Rev. B 73, 094403 – Published 6 March 2006

Abstract

We report the bulk sensitive hard x-ray (hν=5.95keV) core level photoemission spectroscopy to investigate the intrinsic electronic structure of strained (La0.85Ba0.15)MnO3 thin films. In a 20nm thick well-strained film with strongly enhanced ferromagnetism, a new sharp satellite peak appeared at the low energy site of the Mn 2p32 main peak; whereas, a broader signal was observed for the unstrained film with 300nm thickness. Cluster calculations revealed that the intensity corresponded to the density of the state at the Fermi level relating to the magnitude of the ferromagnetic order. The satellite intensity also agreed quantitatively with the square of the magnetization.

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  • Received 1 November 2005

DOI:https://doi.org/10.1103/PhysRevB.73.094403

©2006 American Physical Society

Authors & Affiliations

Hidekazu Tanaka1,*, Yasutaka Takata2, Koji Horiba2, Munetaka Taguchi2, Ashish Chainani2, Shik Shin2, Daigo Miwa2, Kenji Tamasaku2, Yoshinori Nishino2, Tetsuya Ishikawa2, Eiji Ikenaga3, Mitsuhiro Awaji3, Akihisa Takeuchi3, Tomoji Kawai1, and Keisuke Kobayashi3

  • 1ISIR-Sanken, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
  • 2RIKEN/SPring-8, 1-1-1, Mikazuki-cho, Sayo-gun, Hyogo 679-5148, Japan
  • 3JASRI/SPring-8, 1-1-1 Kouto, Mikazuki-cho, Sayo-gun, Hyogo 679-5198, Japan

  • *Corresponding author. Email address: h-tanaka@sanken.osaka-u.ac.jp

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Issue

Vol. 73, Iss. 9 — 1 March 2006

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