Nekrasov, I. A., Kokorina, E. E., Kuchinskii, E. Z., Sadovskii, M. V., Kasai, S., Sekiyama, A., ...
Slightly underdoped high-Tc system La(1.86)Sr(0.14)CuO(4) (LSCO) is studied by means of high energy high resolution angular resolved photoemission spectroscopy (ARPES) and combined computational...
Evidence for the constancy of U in the Mott transition of V2O3 (2009)
Fujiwara, H., Sekiyama, A., Allen, J. W., Yamaguchi, J., Funabashi, G., ...
We have performed high-resolution hard X-ray photoemission spectroscopy (HAXPES) for the Mott-Hubbard system (V(1-x)Cr(x))2O3 in the paramagnetic metal (PM), paramagnetic insulator (PI) and...
Kokorina, E. E., Kuchinskii, E. Z., Nekrasov, I. A., Pchelkina, Z. V., Sadovskii, M. V., Sekiyama, A., ...
Material specific electronic band structure of the electron-doped high-Tc cuprate Nd(1.85)Ce(0.15)CuO(4) (NCCO) is calculated within the pseudo gap regime, using the recently developed generalized...
Corresponding author. Fax: 81-6-6845-4632. (2008)
Mail Address Sekiyama, A. Sekiyama, S. Suga, S. Imada, H. Takagi, T. Nanba, ...
We have measured high-resolution Ce 4d}4f resonant photoemission spectra of CeB . In the on-resonance spectra, two peaks appear near the Fermi level (E ). We have revealed that one corresponds to the...
Uruma, M., Sekiyama, A., Fujiwara, H., Yano, M., Fujita, H., Imada, S., ...
We report on experimental data of the three-dimensional bulk Fermi surfaces of the layered strongly correlated Ca1.5Sr0.5RuO4 system. The measurements have been performed by means of hn-depndent...
Yano, M., Sekiyama, A., Fujiwara, H., Amano, Y., Imada, S., Muro, T., ...
Soft and hard X-ray photoelectron spectroscopy (PES) has been performed for one of the heavy fermion system CeRu$_2$Si$_2$ and a $4f$-localized ferromagnet CeRu$_2$Ge$_2$ in the paramagnetic phase....
Wang, Feng, Allen, J. W., He, J., Jin, R., ...
Angle resolved photoemission spectroscopy (ARPES) has been performed on quasi-one dimensional Li0.9Mo6O17 using photon energy 500 eV. Measured band dispersions are in agreement with those from both...
Photoemission study of (V$_{1-x}$M$_x$)$_2$O$_3$ (M=Cr, Ti) (2006)
Denlinger, J. D., Allen, J. W., Sekiyama, A., ...
We present high-resolution bulk-sensitive photoemission spectra of (V$_{1-x}$M$_x$)$_2$O$_3$ (M=Cr, Ti). The measurements were made for the paramagnetic metal (PM), paramagnetic insulator (PI), and...
Yano, M., Sekiyama, A., Fujiwara, H., Saita, T., Imada, S., Muro, T., ...
Three-dimensional Fermi surfaces at a high temperature have been clarified for a strongly correlated Ce compound, ferromagnet CeRu$_2$Ge$_2$ in the paramagnetic phase, by virtue of a soft x-ray...
Evidence for strong electronic correlations in the spectra of Sr$_2$RuO$_4$ (2006)
Pchelkina, Z. V., Nekrasov, I. A., Pruschke, Th., Sekiyama, A., Suga, S., Anisimov, V. I., ...
The importance of electronic correlation effects in the layered perovskite Sr$_2$RuO$_4$ is evidenced. To this end we use state-of-the-art LDA+DMFT (Local Density Approximation + Dynamical Mean-Field...
Static versus dynamical mean-field theory of Mott antiferromagnets (2006)
Sangiovanni, G., Toschi, A., Koch, E., Held, K., Capone, M., Castellani, C., ...
Static vs. dynamical mean field theory of Mott antiferromagnets (2006)
Sangiovanni, G., Toschi, A., Koch, E., Held, K., Capone, M., Castellani, C., ...
Static versus dynamical mean-field theory of Mott antiferromagnets (2006)
Sangiovanni, G., Toschi, A., Koch, E., Held, K., Capone, M., Castellani, C., ...
This version is available at the following Publisher URL: http://prb.aps.org
Static vs. dynamical mean field theory of Mott antiferromagnets (2005)
Sangiovanni, G., Toschi, A., Koch, E., Held, K., Capone, M., Castellani, C., ...
Studying the antiferromagnetic phase of the Hubbard model by dynamical mean field theory, we observe striking differences with static (Hartree-Fock) mean field: The Slater band is strongly...
Soda, K., Murayama, H., Shimba, K., Yagi, S., Yuhara, J., Takeuchi, T., ...
The high-resolution soft x-ray photoelectron study of Heusler(L2_1)-type (Fe_{2/3}V_{1/3})_{100−y}Al_y (y=23.8−25.8) alloys directly confirms the correlation between their thermoelectric...
Metal-insulator transition in V6O13 probed by photoemission and optical studies (2005)
Irizawa, Akinori, Higashiya, A., Tsunekawa, M., Sekiyama, A., Imada, S., Suga, S., ...
Suga, S., Imada, S., Higashiya, A., Shigemoto, A., Kasai, S., Sing, M., ...
We report on the Cu 1s resonant inelastic X-ray scattering (RIXS) of Cu-O one-dimensional (1D) strongly correlated insulator systems with contrasting atomic arrangements, namely edge-sharing CuGeO3...
Sekiyama, A, Fujita, Y, Tsunekawa, M, Kasai, S, Shigemoto, A, Imada, S, ...
High-resolution soft X-ray photoemission study of a Kondo semiconductor and related compounds (2005)
Sekiyama, A, Fujita, Y, Tsunekawa, M, Kasai, S, Shigemoto, A, Imada, S, ...
High-resolution soft x-ray photoemission study of a Kondo semiconductor and related compounds (2004)
Sekiyama, A., Fujita, Y., Tsunekawa, M., Kasai, S., Shigemoto, A., Imada, S., ...
We have performed the bulk-sensitive high-resolution soft x-ray photoemission study of a Kondo semiconductor CeRhAs and related compounds CeNiSn and CePdSn. The comparison of the spectra of...
Full orbital calculation scheme for materials with strongly correlated electrons (2004)
Anisimov, V. I., Kondakov, D. E., Kozhevnikov, A. V., Nekrasov, I. A., Pchelkina, Z. V., Allen, J. W., ...
We propose a computational scheme for the ab initio calculation of Wannier functions (WFs) for correlated electronic materials. The full-orbital Hamiltonian H is projected into the WF subspace...
High-energy photoemission on Fe3O4: Small polaron physics and the Verwey transition (2004)
Schrupp, D., Sing, M., Tsunekawa, M., Fujiwara, H., Kasai, S., Sekiyama, A., ...
We have studied the electronic structure and charge ordering (Verwey) transition of magnetite (Fe3O4) by soft x-ray photoemission. Due to the enhanced probing depth and the use of different surface...
Allen, J. W., Denlinger, J. D., ...
Photoemission spectra of the paramagnetic insulating (PI) phase of (V_0.972Cr_0.028)_2O_3, taken in ultra high vacuum up to the unusually high temperature (T) of 800 K, reveal a property unique to...
Technique for bulk Fermiology by photoemission applied to layered ruthenates (2004)
Sekiyama, A., Kasai, S., Tsunekawa, M., Ishida, Y., Sing, M., Irizawa, A., ...
We report the Fermi surfaces of the superconductor Sr2RuO4 and the non-superconductor Sr1.8Ca0.2RuO4 probed by bulk-sensitive high-energy angle-resolved photoemission. It is found that there is one...
Sekiyama, A., Fujiwara, H., Higashiya, A., Imada, S., Kuwahara, H., Tokura, Y., ...
Unusual temperature and doping dependence of the Mn 3d spectral functions of manganese perovskites Nd1-xSrxMnO3 has been revealed by the high-resolution Mn 2p-3d resonance photoemission. The...
Allen, J. W., Denlinger, J. D., ...
Mutual Experimental and Theoretical Validation of Bulk Photoemission Spectra of Sr1-xCaxVO3 (2004)
Sekiyama, A., Fujiwara, H., Imada, S., Suga, S., Eisaki, H., Uchida, S. I., ...
Mutual Experimental and Theoretical Validation of Bulk Photoemission Spectra of Sr1-xCaxVO3 (2003)
Sekiyama, A., Fujiwara, H., Imada, S., Suga, S., Eisaki, H., Uchida, S. I., ...
We report high-resolution high-energy photoemission spectra together with parameter-free LDA+DMFT (local density approximation + dynamical mean-field theory) results for Sr1-xCaxVO3, a prototype 3d1...
Auger Effect in the High-Resolution Ce 3d-edge Resonant Photoemission (2003)
Iwasaki, T., Sekiyama, A., ...
The bulk-sensitive Ce 4$f$ spectral weights of various Ce compounds including CeFe$_2$, CeNi$_2$, and CeSi$_2$ were obtained with the resonant photoemission technique at the Ce 3d-edge. We found the...
Localized Character of 4f Electrons in CeRh$_x$(x=2,3) and CeNi$_x$(x=2,5) (2003)
Jung, Ran-Ju, Choi, Byung-Hee, Kim, Hyeong-Do, Cho, En-Jin, Iwasaki, T., ...
We have measured Ce 4f spectral weights of extremely $\alpha$-like Ce-transition metal intermetallic compounds CeRh$_x$ (x=2,3) and CeNi$_x$ (x=2,5) by using the {\it bulk-sensitive} resonant...
Prominent Quasiparticle Peak in the Photoemission Spectrum of the Metallic Phase of V2O3 (2003)
Mo, S. K., Denlinger, J. D., Kim, H. D., Park, J. H., Allen, J. W., Sekiyama, A., ...
Prominent quasi-particle peak in the photoemission spectrum of the metallic phase of V_2O_3 (2002)
Denlinger, J. D., Allen, J. W., Sekiyama, A., ...
We present the first observation of a prominent quasi-particle peak in the photoemission spectrum of the metallic phase of V_2O_3 and report new spectral calculations that combine the local density...
Kim, J. H., Sekiyama, A., Kasai, S., Suga, S., Han, S. W., ...
Electronic structures of very dilute Cr- or Ru-doped Nd_{1/2}A_{1/2}MnO_{3} (NAMO; A=Ca, Sr) manganites have been investigated using the Mn and Cr 2p -> 3d resonant photoemission spectroscopy (PES)....
Bulk-sensitive Photoemission of Mn5Si3 (2002)
Irizawa, A., Yamasaki, A., Okazaki, M., Kasai, S., Sekiyama, A., Imada, S., ...
We have carried out a bulk-sensitive high-resolution photoemission experiment on Mn5Si3. The measurements are performed for both core level and valence band states. The Mn core level spectra are...
Possible Kondo resonance in PrFe4P12 studied by bulk-sensitive photoemission (2002)
Yamasaki, A., Imada, S., Nanba, T., Sekiyama, A., Sugawara, H., Sato, H., ...
Pr 4f electronic states in Pr-based filled skutterudites PrT4X12(T=Fe and Ru; X=P and Sb) have been studied by high-resolution bulk-sensitive Pr 3d-4f resonance photoemission. A very strong spectral...
High-resolution Photoemission Study of Cd2Re2O7 (2002)
Irizawa, A., Higashiya, A., Kasai, S., Sasabayashi, T., Shigemoto, A., Sekiyama, A., ...
High-resolution bulk-sensitive photoemission has been measured for pyrochlore oxide Cd2Re2O7. Temperature variations of the spectral shapes between 20 and 250 K are obviously observed for the Re 4f...
Genuine Electronic States of Vanadium Perovskites Revealed by High-Energy Photoemission (2002)
Sekiyama, A., Fujiwara, H., Imada, S., Eisaki, H., Uchida, S. I., Takegahara, K., ...
Bulk-sensitive high-resolution photoemission was carried out on a prototype 3d1 metallic Sr1-xCaxVO3. In a strong contrast to so far reported results, the bulk spectral functions are revealed to be...
Bulk-sensitive photoemission spectroscopy of A_2FeMoO_6 double perovskites (A=Sr, Ba) (2002)
Kim, J. H., Sekiyama, A., Kasai, S., Suga, S., Han, S. W., ...
Electronic structures of Sr_2FeMoO_6 (SFMO) and Ba_2FeMoO_6 (BFMO) double perovskites have been investigated using the Fe 2p->3d resonant photoemission spectroscopy (PES) and the Cooper minimum in...
Kim, Hyeong-Do, Park, J-H., Allen, J. W., Sekiyama, A., Yamasaki, A., Kadono, K., ...
%auto-ignore This paper has been withdrawn by the authors because its results have been superceded by new experimental data and new theory presented in S.-K. Mo et al., cond-mat/0212110.
Allen, J. W., Sekiyama, A., Yamasaki, A., Kadono, K., ...
Bulk-sensitive high-resolution Ce 4f spectra have been obtained from 3d $\to$ 4f resonance photoemission measurements on La$_{1-x}$Ce$_x$Al$_2$ and La$_{1-x}$Ce$_x$Ru$_2$ for $x = 0.0, 0.04, 1.0$....
High-resolution Ce 3d-edge resonant photoemission study of CeNi_2 (1999)
Yang, See-Hun, Kim, Hyeong-Do, Jung, Ran-Ju, Sekiyama, A., Iwasaki, T., ...
Resonant photoemission (RPES) at the Ce 3d -> 4f threshold has been performed for alpha-like compound CeNi_2 with extremely high energy resolution (full width at half maximum < 0.2 eV) to obtain...
Temperature-dependent photoemission spectral weight in $La_{0.6}Sr_{0.4}MnO_3$ (1996)
Sarma, DD, Shanthi, N, Krishnakumar, SR, Saitoh, T, Mizokawa, T, Sekiyama, A, ...
We report temperature-dependent redistribution of spectral weight in photoemission spectra of $La_{0.6}Sr_{0.4}MnO_3$ over a wide energy range of several eV. We attribute this to a change in the...
Temperature-dependent photoemission spectral weight in $La_{0.6}Sr_{0.4}MnO_3$ (1996)
Sarma, DD, Shanthi, N, Krishnakumar, SR, Saitoh, T, Mizokawa, T, Sekiyama, A, ...
We report temperature-dependent redistribution of spectral weight in photoemission spectra of $La_{0.6}Sr_{0.4}MnO_3$ over a wide energy range of several eV. We attribute this to a change in the...