High-resolution angle-resolved resonant-photoemission spectroscopy of FexTiTe2

2004 ◽  
Vol 351 (3-4) ◽  
pp. 262-264 ◽  
Author(s):  
K. Yamazaki ◽  
K. Shimada ◽  
H. Negishi ◽  
F. Xu ◽  
A. Ino ◽  
...  
1993 ◽  
Vol 307 ◽  
Author(s):  
R. J. Kelley ◽  
X. C. Cai ◽  
Jian Ma ◽  
D. C. Larbalestier ◽  
M. Onellion

ABSTRACTThe materials and electronic properties of the new cuprate superconductors are critically dependent upon both the oxygen stoichiometry and annealing history of the material. Improving Jc, Tc, and determining the underlying mechanism of superconductivity depend on a better understanding of these effects. In the study of Bi2Sr2CaCu2O8-δ we have combined standard material characterization techniques with high resolution angle resolved photoemission spectroscopy and resonant photoemission spectroscopy to illuminate these issues. Specifically, we make high quality single crystals of BSCCO and then anneal in different atmospheres and pressures. We correlate this with c-axis resistivity, a, b-plane resistivity, and resonant photoemission spectroscopy. In this way we can explain the macroscopic transport properties in terms of the electronic properties of the material determined from photoemission. We find that we can change the c-axis resistivity from non-metallic to metallic by adding oxygen and that this correlates with increased oscillator strength in the c-axis direction at the Fermi level.


2002 ◽  
Vol 09 (01) ◽  
pp. 529-534 ◽  
Author(s):  
KENYA SHIMADA ◽  
MASASHI ARITA ◽  
YUKIHARU TAKEDA ◽  
HIROYUKI FUJINO ◽  
KENICHI KOBAYASHI ◽  
...  

In order to study the electronic states of solids, using high-resolution, low-temperature photoemission spectroscopy (PES) with tunable photon energies, we have constructed a high-resolution undulator beamline operating in the photon-energy range 26–300 eV at the compact 700 MeV electron-storage ring HiSOR located at Hiroshima University. By way of gas-phase experiments, with photon flux larger than 2 × 1010 photons/s, photon-energy resolving powers of E/ΔE > 16000 and 3800 were obtained at hν ~ 48 eV and ~ 244 eV, respectively. High-resolution PES experiments on evaporated Au at 8 K were performed at the beamline with a total energy resolution of ΔE = 12 meV at hν = 48 eV. Among the first experiments from the beamline, a resonant photoemission study of UNiSn is presented. The U 5f derived peak is significantly enhanced at hν = 98 eV.


2015 ◽  
Vol 17 (28) ◽  
pp. 18403-18412 ◽  
Author(s):  
M. G. Silly ◽  
F. Charra ◽  
F. Lux ◽  
G. Lemercier ◽  
F. Sirotti

We investigate the electronic properties of a model mixed-valence hydrated chloride europium salt by means of high resolution photoemission spectroscopy (HRPES) and resonant photoemission spectroscopy (RESPES) at the Eu 3d → 4f and 4d → 4f transitions.


2002 ◽  
Vol 09 (02) ◽  
pp. 1035-1039 ◽  
Author(s):  
K. MIMURA ◽  
Y. OKABAYASHI ◽  
H. MIZOHATA ◽  
D. SAKIYAMA ◽  
O. SAKAI ◽  
...  

Ce 4f electronic states in an antiferromagnetic Kondo compound CePd 2 Si 2 and a strong intermediate-valence compound CeNi 2 Si 2 have been investigated by means of high-resolution Ce 4d–4f resonant photoemission spectroscopy at 12 K. The relative intensity of the f5/21 to f7/21 final state in the Ce 4f spectrum for CeNi 2 Si 2 is stronger than the relative intensity for CePd 2 Si 2, indicating that the intensity of Kondo resonance scales the Kondo temperature since the Ce 4f spectrum near the Fermi level dominantly reflects the bulk component. Both Ce 4f spectra have been well fitted by the spectral calculations based on a single impurity Anderson model with consideration of the bulk and surface components. Our present calculation indicates that the model is applicable to the analyses of the Ce 4f spectra of the weakly and strongly hybridized systems.


2000 ◽  
Vol 281-282 ◽  
pp. 729-730 ◽  
Author(s):  
K Matsuda ◽  
A Sekiyama ◽  
S Suga ◽  
S Imada ◽  
Y Saitoh ◽  
...  

1999 ◽  
Vol 111 (7) ◽  
pp. 373-378 ◽  
Author(s):  
A Sekiyama ◽  
S Suga ◽  
Y Saitoh ◽  
S Ueda ◽  
H Harada ◽  
...  

2013 ◽  
Vol 226 ◽  
pp. 42-46 ◽  
Author(s):  
Shodai Kurosumi ◽  
Koji Horiba ◽  
Naoka Nagamura ◽  
Satoshi Toyoda ◽  
Hiroshi Kumigashira ◽  
...  

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