Charge disproportionation of Mn 3d and O 2p electronic states depending on strength of p-d hybridization in (LaMnO3) 2(SrMnO3)2 superlattices

被引：8

作者：

Nakao, Hironori ^{[1
,2
]}

Tabata, Chihiro ^{[1
,2
,9
]}

Murakami, Youichi ^{[1
,2
]}

Yamasaki, Yuichi ^{[3
,4
]}

Yamada, Hiroyuki ^{[5
]}

Ishihara, Sumio ^{[6
]}

Kawasaki, Masashi ^{[4
,7
,8
]}

机构：

[1] High Energy Accelerator Res Org KEK, Condensed Matter Res Ctr, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan

[2] High Energy Accelerator Res Org KEK, Photon Factory, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan

[3] NIMS, Tsukuba, Ibaraki 3050047, Japan

[4] RIKEN Ctr Emergent Matter Sci CEMS, Wako, Saitama 3510198, Japan

[5] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

[6] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[7] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[8] Univ Tokyo, QPEC, Tokyo 1138656, Japan

[9] Kyoto Univ, Inst Integrated Radiat & Nucl Sci, Osaka 5900494, Japan

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 24期

关键词：

MANGANITE;

D O I：

10.1103/PhysRevB.98.245146

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The charge disproportionation of Mn 3d and O 2p electronic states was investigated in two (LaMnO3)(2) (SrMnO3)(2) superlattices using the resonant x-ray scattering technique. The superlattices show significantly different conductivity even with the same composition. The large modulation of the Mn 3d electronic state was observed in the insulating sample, however the charge disproportionation and magnetic modulation of O 2p were shown in the semiconductive sample. It is suggested that the charge modulation appears in either Mn 3d or O 2p, which is strongly related to strength of the p-d hybridization, which is the main factor determining the electric conductivity in the superlattices.

引用

页数：7

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