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Physical Review B - Condensed Matter and Materials Physics
Volumn 80, Issue 12, 2009, Pages
Electronic structure of Sr0.8-y La0.2+y Ti0.8 Cr0.2 O3 studied by photoemission spectroscopy and first-principles band structure calculations
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EID: 70350675292     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.80.125122     Document Type: Article
Times cited : (6)
References (30)
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    • The ground state of SrTiO3 by KKR-LDA method was insulating with a band gap of □1.9 eV, which is in complete agreement with other ab initio calculations.
    • The ground state of SrTiO3 by KKR-LDA method was insulating with a band gap of □1.9 eV, which is in complete agreement with other ab initio calculations.
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    • Maiti, K.1    Sarma, D.D.2
  • 19
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    • Note that the symmetrization method does not provide the correct unoccupied states for all the energy regime. Indeed, the Ti3d band is not symmetric with respect to EF as shown in theory. We, therefore, use this only to monitor gap-opening behavior at EF.
    • Note that the symmetrization method does not provide the correct unoccupied states for all the energy regime. Indeed, the Ti3d band is not symmetric with respect to EF as shown in theory. We, therefore, use this only to monitor gap-opening behavior at EF.
  • 20
    • 70350640120 scopus 로고    scopus 로고
    • Why the (0.1, 0.1) sample does not show a pseudogaplike dip and (0.2, 0.1) or (0.2, 0.2) does is beyond our scope and left to be resolved. However, we note that when x=0.25, any Ti ions are connected to at least one Cr ion on average in the simple cubic lattice built by Ti/Cr sites. This suggests that x=0.2 (which is close to 0.25) will have very limited conducting paths, which is not the case in x=0.1.
    • Why the (0.1, 0.1) sample does not show a pseudogaplike dip and (0.2, 0.1) or (0.2, 0.2) does is beyond our scope and left to be resolved. However, we note that when x=0.25, any Ti ions are connected to at least one Cr ion on average in the simple cubic lattice built by Ti/Cr sites. This suggests that x=0.2 (which is close to 0.25) will have very limited conducting paths, which is not the case in x=0.1.
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    • ZERO BIAS ANOMALY IN TUNNEL RESISTANCE AND ELECTRON-ELECTRON INTERACTION.
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    • Since the location of the Cr3d states depends on y in theory, we chose the appropriate integration window in the total DOS from the bottom to the top of the Cr3d states in each y. For instance, the integration windows for (0.2, 0.2) and (0.2, 0.1) are from 1.5 to 0.25 eV and from 1.4 to 0.15 eV, respectively. For the Ti3d states, the integration windows are common, from 0.13 to 0.0 eV.
    • Since the location of the Cr3d states depends on y in theory, we chose the appropriate integration window in the total DOS from the bottom to the top of the Cr3d states in each y. For instance, the integration windows for (0.2, 0.2) and (0.2, 0.1) are from 1.5 to 0.25 eV and from 1.4 to 0.15 eV, respectively. For the Ti3d states, the integration windows are common, from 0.13 to 0.0 eV.
  • 29
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    • The negative- y regime is realized only if x+y ≥ 0 in the formula Sr1- (x+y) Lax+y Ti1-x Crx O3, although this regime has not been tested in the present work.
    • The negative- y regime is realized only if x+y ≥ 0 in the formula Sr1- (x+y) Lax+y Ti1-x Crx O3, although this regime has not been tested in the present work.

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.