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papers

Publications (7)

cond-mat.str-el2007

Temperature-dependent photoemission spectral weight transfer and chemical potential shift in Pr $_{1 - x}$ Ca $_{x}$ MnO $_{3}$ : Implications for charge density modulation

K. Ebata, M. Hashimoto, K. Tanaka +3

We have studied the temperature dependence of the photoemission spectra of Pr $_{1 - x}$ Ca $_{x}$ MnO $_{3}$ (PCMO) with $x = 0.25$ , 0.3 and 0.5. For $x = 0.3$ and 0.5, we observed a gap in the…

cond-mat.mtrl-sci2007

Depth profile high-energy spectroscopic study of Mn-doped GaN prepared by thermal diffusion

J. I. Hwang, Y. Osafune, M. Kobayashi +9

We have performed an $in$ - $s i t u$ depth profile study of Mn-doped GaN prepared by a low temperature thermal diffusion method using photoemission and x-ray absorption spectroscopy. I…

cond-mat.str-el2007

Chemical potential shift induced by double-exchange and polaronic effects in Nd_{1-x}Sr_xMnO_3

K. Ebata, M. Takizawa, K. Maekawa +4

We have studied the chemical potential shift as a function of temperature in Nd $_{1 - x}$ Sr $_{x}$ MnO $_{3}$ (NSMO) by measurements of core-level photoemission spectra. For ferromagnetic s…

cond-mat.str-el2008

Chemical potential landscape in band filling and bandwidth-control of manganites: Photoemission spectroscopy measurements

K. Ebata, M. Takizawa, A. Fujimori +3

We have studied the effects of band filling and bandwidth control on the chemical potential in perovskite manganites $R_{1 - x} A_{x}$ MnO $_{3}$ ( $R$ : rare earth, $A$ : alkaline earth) by…

cond-mat.str-el2006

Chemical potential shift and spectral weight transfer in Pr $_{1 - x}$ Ca $_{x}$ MnO $_{3}$ revealed by photoemission spectroscopy

K. Ebata, H. Wadati, M. Takizawa +6

We have studied the chemical potential shift and changes in the electronic density of states near the Fermi level ( $E_{F}$ ) as a function of carrier concentration in Pr $_{1 - x}$ Ca $_{x}$ …

cond-mat.mtrl-sci2008

Depth profile photoemission study of thermally diffused Mn/GaAs (001) interfaces

Y. Osafune, G. S. Song, J. I. Hwang +9

We have performed a depth profile study of thermally diffused Mn/GaAs (001) interfaces using photoemission spectroscopy combined with Ar $^{+}$ -ion sputtering. We found that Mn ion wa…