Electronic phase transitions under hydrostatic pressure in LaMnO3 (111) bilayers sandwiched between LaAlO3

被引：5

作者：

Tahini, H. A. ^{[1
,2
]}

Cossu, F. ^{[1
]}

Singh, N. ^{[1
]}

Smith, S. C. ^{[2
]}

Schwingenschloegl, U. ^{[1
]}

机构：

[1] KAUST, Phys Sci & Engn Div, Thuwal 239556900, Saudi Arabia

[2] UNSW Australia, Sch Chem Engn, Integrated Mat Design Ctr, Sydney, NSW 2052, Australia

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 03期

关键词：

OXIDE INTERFACES;

D O I：

10.1103/PhysRevB.93.035117

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using ab initio calculations, we investigate the effect of hydrostatic pressure on the electronic structure of LaMnO3 (111) bilayers sandwiched between LaAlO3. In the ideal heterostructure we observe Dirac cones at the Fermi energy. However, octahedral tiltings open a band gap and thus destroy the Dirac nature. We show that the effect of the tiltings can be suppressed by hydrostatic pressure from 40 GPa to 60 GPa. At higher pressure further phase transitions are encountered.

引用

页数：5

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