High-resolution photoemission study of Nd1−xSrxMnO3

Fujiwara, H.; Sekiyama, A.; Higashiya, A.; Konoike, K.; Tsunekawa, M.; Yamasaki, Akira; Irizawa, Akinori; Imada, S.; Matsuki, Takayuki; Noda, Kohei; Kuwahara, H.; Tokura, Y.; Suga, S.

doi:10.1016/j.elspec.2005.01.129

Cited by 6 publications

(6 citation statements)

References 11 publications

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“…Whereas the Auger contributions are mainly seen in the range of 3-4 eV and 8-9 eV with SB069-3 linear energy shifts with hν, the spectral weight near E F is confirmed to be derived from the Mn 3d components. The sharp peak at 2.0 eV originates from the Mn 3d t 2g states reflecting the localized character, and the hump structure from E F to 1.5 eV is due to the Mn 3d e g states [13]. Figure 2(b) shows the enlarged view of the Mn 3d e g states near E F excited at E for x = 0.38 and 0.40 samples in the metallic phase.…”

Section: Resultsmentioning

confidence: 99%

Soft- and Hard-X-ray Photoemission Spectroscopy of La_2-2xSr_1+2xMn₂O₇

et al. 2012

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We have performed the photoemission spectroscopy of the bilayered manganese oxides La 2−2x Sr 1+2x Mn 2 O 7 (x = 0.38, 0.40) with the photon energies (hν) of 640-700 eV and 8150 eV. The difference between the surface and the bulk electronic structures is revealed from the polar-angle dependence of the Sr 3d core level and the valence band spectra with hν = 700 eV. Moreover, we have reconfirmed that the spectral weight at the Fermi level is suppressed even in the bulk electronic states by means of the valence band spectra obtained by the Mn 2p-3d resonant photoemission with hν ∼ 643eV and by the hard-X-ray photoemission spectroscopy with 8175eV photons.

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Section: Resultsmentioning

confidence: 99%

Soft- and Hard-X-ray Photoemission Spectroscopy of La_2-2xSr_1+2xMn₂O₇

et al. 2012

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“…However, the occurrence of dynamic phase segregation within the FM phase has been proposed for NSMO47 based on Mn 2p resonance photoemission results 18 . A phase separation model in which AFM droplets lie in a conducting FM host was also proposed for Nd 0.55 Sr 0.45 MnO 3 19,20 , a sample with Sr content and macroscopic properties that are similar to NSMO47.…”

Section: Resultsmentioning

confidence: 99%

Pressure-induced tuning of a magnetic phase separation in Nd0.53Sr0.47MnO3<

et al. 2012

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X-ray magnetic circular dichroism and neutron diffraction measurements were conducted in-situ at high pressure and low temperature to investigate the evolution of the magnetic properties of Nd0.53Sr0.47MnO3 (NSMO47). The neutron diffraction data provide the experimental evidence for the presence of antiferromagnetic domains within the conducting ferromagnetic host at ambient pressure. The antiferromagnetic phase becomes dominant above 3 GPa with a concomitant reduction of the FM phase. Those findings indicate that the magnetic ground state of NSMO47 is more complex than previously reported, confirming the coexistence of competing phases over the doping range in which Colossal Magnetoresistance is observed. We also find that magnetic phase separation in the form of domains appears to be an intrinsic phenomenon at high pressure.

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“…In Fig. 2(a), the peak at about 2.0 eV originates from the Mn 3d t 2g state and the spectral weight from the Fermi level ðE F Þ to 1.5 eV is derived from the Mn 3d e g state [4][5][6]. The temperature dependence of the Mn 3d spectra near E F is shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…The sample surface was obtained by in situ fracturing near room temperature. A possible Auger contribution is clarified to be negligible at hn ¼ 643 eV within the energy region from E F to $3 eV [3,4]. The position of E F was calibrated by the Fermi edge of an evaporated Au film in electrical contact with manganese crystals.…”

Section: Methodsmentioning

confidence: 99%