Intrinsic and extrinsic surface states of single crystalline SrTiO3
Intrinsic and extrinsic surface states of single crystalline SrTiO3
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单晶 SrTiO3 的本征和外在表面态
DOI：
10.1063/1.368273
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发表时间：
1998
影响因子：
3.2
通讯作者：
M. Oku
中科院分区：
文献类型：
--
作者：
Yuji Adachi;S. Kohiki;K. Wagatsuma;M. Oku
我们没有证据表明，在带隙中的固有表面态原位断裂SrTiO 3：La，SrTiO 3：Nb和SrTiO 3。样品的价带最大值位于费米能级以下3.3 eV处，表明能带弯曲小得可以忽略不计。体带隙区域没有发射，表明本征表面态基本上是空的。Ar+离子轰击原位断裂的样品引起在11.6 eV左右的峰，表明Ti+3状态。
We have no evidence of intrinsic surface states in the band gap for in situ fractured SrTiO3:La, SrTiO3:Nb and SrTiO3. The valence band maximum of the samples lie at 3.3 eV below the Fermi level, indicating that the band bending is negligibly small. No emission from the region of bulk band gap indicated that the intrinsic surface states are largely empty. Ar+ ion bombardment of in situ fractured samples gave rise to a peak at around 11.6 eV, indicating the Ti+3 state.