The high-pressure electronic structure of magnesiowustite (Mg, Fe)O: Applications to the physics and chemistry of the lower mantle

1991 ◽  
Vol 96 (B9) ◽  
pp. 14299-14312 ◽  
Author(s):  
David M. Sherman
Keyword(s):  
High Pressure ◽  
Electronic Structure ◽  
Lower Mantle

scholarly journals From Slater to Mott physics by epitaxially engineering electronic correlations in oxide interfaces

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Carla Lupo ◽  
Evan Sheridan ◽  
Edoardo Fertitta ◽  
David Dubbink ◽  
Chris J. Pickard ◽  
...  
Keyword(s):  
Phase Diagram ◽  
High Pressure ◽  
Charge Transfer ◽  
Lower Mantle ◽  
Random Structure ◽  
Titanium Oxides ◽  
Oxide Interfaces ◽  
Electronic Correlations ◽  
Epitaxial Strain ◽  
Magnetic Switching

AbstractUsing spin-assisted ab initio random structure searches, we explore an exhaustive quantum phase diagram of archetypal interfaced Mott insulators, i.e. lanthanum-iron and lanthanum-titanium oxides. In particular, we report that the charge transfer induced by the interfacial electronic reconstruction stabilises a high-spin ferrous Fe2+ state. We provide a pathway to control the strength of correlation in this electronic state by tuning the epitaxial strain, yielding a manifold of quantum electronic phases, i.e. Mott-Hubbard, charge transfer and Slater insulating states. Furthermore, we report that the electronic correlations are closely related to the structural oxygen octahedral rotations, whose control is able to stabilise the low-spin state of Fe2+ at low pressure previously observed only under the extreme high pressure conditions in the Earth’s lower mantle. Thus, we provide avenues for magnetic switching via THz radiations which have crucial implications for next generation of spintronics technologies.

Electronic structure and optical properties of β-FeSi2(100)/Si(001) interface at high pressure

2012 ◽  
Vol 101 (11) ◽  
pp. 111909 ◽  
Author(s):  
L. Z. Liu ◽  
X. L. Wu ◽  
X. X. Liu ◽  
J. C. Shen ◽  
T. H. Li ◽  
...  
Keyword(s):  
High Pressure ◽  
Optical Properties ◽  
Electronic Structure

Electronic structure of GaAs/AlAs symmetric superlattices: A high-pressure study near the type-I–type-II crossover

1990 ◽  
Vol 41 (6) ◽  
pp. 3641-3646 ◽  
Author(s):  
M. Holtz ◽  
R. Cingolani ◽  
K. Reimann ◽  
R. Muralidharan ◽  
K. Syassen ◽  
...  
Keyword(s):  
High Pressure ◽  
Electronic Structure ◽  
Type I ◽  
Type Ii ◽  
High Pressure Study

Partitioning of Fe within high-pressure silicate perovskite: Evidence for unusual geochemistry in the lower mantle

1987 ◽  
Vol 14 (3) ◽  
pp. 224-226 ◽  
Author(s):  
W. E. Jackson ◽  
E. Knittle ◽  
G. E. Brown ◽  
R. Jeanloz
Keyword(s):  
High Pressure ◽  
Lower Mantle
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