Electronic Structure of Charge- and Spin-Controlled Sr1-(x+y)Lax+yTi1- xCrxO3
Physical Review Letters Volume 96 Issue 6
Page 067203-1-067203-4
published_at 2006-02-14
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| File | |
| Title ( eng ) |
Electronic Structure of Charge- and Spin-Controlled Sr1-(x+y)Lax+yTi1- xCrxO3
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| Creator |
Yamakawa K.
Saitoh Tomohiko
Inaba Jungo
Katsufuji Takuro
Higashiguchi Mitsuharu
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| Source Title |
Physical Review Letters
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| Volume | 96 |
| Issue | 6 |
| Start Page | 067203-1 |
| End Page | 067203-4 |
| 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.
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| Keywords |
strontium compounds
lanthanum compounds
band structure
photoelectron spectra
carrier density
localised states
charge transfer states
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| Language |
eng
|
| Resource Type | journal article |
| Publisher |
American Physical Society
|
| Date of Issued | 2006-02-14 |
| Rights |
Copyright (c) 2006 The American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.96.067203
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.96.067203
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