Abstract
We present the electronic structure of Sr1-(x+y)Lax+yTi1-xCrxO3 investigated by high-resolution photoemission spectroscopy. In the vicinity of the Fermi level, it was found that the electronic structure was composed of a Cr 3d local state with the t2g3 configuration and a Ti 3d itinerant state. The energy levels of these Cr and Ti 3d states are well interpreted by the difference of the charge-transfer energy of both ions. The spectral weight of the Cr 3d state is completely proportional to the spin concentration x irrespective of the carrier concentration y, indicating that the spin density can be controlled by x as desired. In contrast, the spectral weight of the Ti 3d state is not proportional to y, depending on the amount of Cr doping.
| Original language | English |
|---|---|
| Journal | Physical Review Letters |
| Volume | 96 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2006 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Electronic structure of charge- and spin-controlled Sr1-(x+y)Lax+yTi1- xCrxO3. / Iwasawa, H.; Yamakawa, K.; Saitoh, T.; Inaba, J.; Katsufuji, Takuro; Higashiguchi, M.; Shimada, K.; Namatame, H.; Taniguchi, M.
In: Physical Review Letters, Vol. 96, No. 6, 2006.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Electronic structure of charge- and spin-controlled Sr1-(x+y)Lax+yTi1- xCrxO3
AU - Iwasawa, H.
AU - Yamakawa, K.
AU - Saitoh, T.
AU - Inaba, J.
AU - Katsufuji, Takuro
AU - Higashiguchi, M.
AU - Shimada, K.
AU - Namatame, H.
AU - Taniguchi, M.
PY - 2006
Y1 - 2006
N2 - We present the electronic structure of Sr1-(x+y)Lax+yTi1-xCrxO3 investigated by high-resolution photoemission spectroscopy. In the vicinity of the Fermi level, it was found that the electronic structure was composed of a Cr 3d local state with the t2g3 configuration and a Ti 3d itinerant state. The energy levels of these Cr and Ti 3d states are well interpreted by the difference of the charge-transfer energy of both ions. The spectral weight of the Cr 3d state is completely proportional to the spin concentration x irrespective of the carrier concentration y, indicating that the spin density can be controlled by x as desired. In contrast, the spectral weight of the Ti 3d state is not proportional to y, depending on the amount of Cr doping.
AB - We present the electronic structure of Sr1-(x+y)Lax+yTi1-xCrxO3 investigated by high-resolution photoemission spectroscopy. In the vicinity of the Fermi level, it was found that the electronic structure was composed of a Cr 3d local state with the t2g3 configuration and a Ti 3d itinerant state. The energy levels of these Cr and Ti 3d states are well interpreted by the difference of the charge-transfer energy of both ions. The spectral weight of the Cr 3d state is completely proportional to the spin concentration x irrespective of the carrier concentration y, indicating that the spin density can be controlled by x as desired. In contrast, the spectral weight of the Ti 3d state is not proportional to y, depending on the amount of Cr doping.
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U2 - 10.1103/PhysRevLett.96.067203
DO - 10.1103/PhysRevLett.96.067203
M3 - Article
AN - SCOPUS:33144470602
VL - 96
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 6
ER -