Abstract
Using photoemission (PES) spectroscopy and a first-principles band-structure calculation, we have investigated the electronic structure of perovskite-type Ti-Cr oxides Sr1 - (x + y) Lax + y Ti1 - x Crx O3, in which the charge and spin density can be controlled. It was found that the near-Fermi level (EF) electronic structure consisted of a Cr 3d localized state and a Ti 3d itinerant state that were well separated in energy. The spectral weight of the Cr 3d state was proportional to x, demonstrating a controllable spin density. In contrast, the near-EF spectral weight exhibited different behavior. The band theory has reproduced the essential features of the Cr and Ti 3d states as well as the O 2p ones, but failed to predict the location of the Cr 3d and O 2p states. Implications of this discrepancy have been discussed in connection with calculated magnetic moments.
| Original language | English |
|---|---|
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 310 |
| Issue number | 2 SUPPL. PART 2 |
| DOIs | |
| Publication status | Published - 2007 Mar |
Fingerprint
Keywords
- Electronic structure
- Photoemission spectroscopy
- SrTiO
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Independent control of charge and spin density in Sr1 - (x + y) Lax + y Ti1 - x Crx O3 probed by photoemission spectroscopy. / Kaneyoshi, S.; Iwasawa, H.; Saitoh, T.; Aiura, Y.; Satoh, D.; Katsufuji, Takuro; Hase, I.; Higashiguchi, M.; Shimada, K.; Namatame, H.; Taniguchi, M.; Kubota, M.; Ono, K.
In: Journal of Magnetism and Magnetic Materials, Vol. 310, No. 2 SUPPL. PART 2, 03.2007.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Independent control of charge and spin density in Sr1 - (x + y) Lax + y Ti1 - x Crx O3 probed by photoemission spectroscopy
AU - Kaneyoshi, S.
AU - Iwasawa, H.
AU - Saitoh, T.
AU - Aiura, Y.
AU - Satoh, D.
AU - Katsufuji, Takuro
AU - Hase, I.
AU - Higashiguchi, M.
AU - Shimada, K.
AU - Namatame, H.
AU - Taniguchi, M.
AU - Kubota, M.
AU - Ono, K.
PY - 2007/3
Y1 - 2007/3
N2 - Using photoemission (PES) spectroscopy and a first-principles band-structure calculation, we have investigated the electronic structure of perovskite-type Ti-Cr oxides Sr1 - (x + y) Lax + y Ti1 - x Crx O3, in which the charge and spin density can be controlled. It was found that the near-Fermi level (EF) electronic structure consisted of a Cr 3d localized state and a Ti 3d itinerant state that were well separated in energy. The spectral weight of the Cr 3d state was proportional to x, demonstrating a controllable spin density. In contrast, the near-EF spectral weight exhibited different behavior. The band theory has reproduced the essential features of the Cr and Ti 3d states as well as the O 2p ones, but failed to predict the location of the Cr 3d and O 2p states. Implications of this discrepancy have been discussed in connection with calculated magnetic moments.
AB - Using photoemission (PES) spectroscopy and a first-principles band-structure calculation, we have investigated the electronic structure of perovskite-type Ti-Cr oxides Sr1 - (x + y) Lax + y Ti1 - x Crx O3, in which the charge and spin density can be controlled. It was found that the near-Fermi level (EF) electronic structure consisted of a Cr 3d localized state and a Ti 3d itinerant state that were well separated in energy. The spectral weight of the Cr 3d state was proportional to x, demonstrating a controllable spin density. In contrast, the near-EF spectral weight exhibited different behavior. The band theory has reproduced the essential features of the Cr and Ti 3d states as well as the O 2p ones, but failed to predict the location of the Cr 3d and O 2p states. Implications of this discrepancy have been discussed in connection with calculated magnetic moments.
KW - Electronic structure
KW - Photoemission spectroscopy
KW - SrTiO
UR - http://www.scopus.com/inward/record.url?scp=33847311859&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33847311859&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2006.10.400
DO - 10.1016/j.jmmm.2006.10.400
M3 - Article
AN - SCOPUS:33847311859
VL - 310
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 2 SUPPL. PART 2
ER -