Dimensionality-strain phase diagram of strontium iridates

Autor(en)

Bongjae Kim, Peitao Liu, Cesare Franchini

Abstrakt

The competition between spin-orbit coupling, bandwidth (W), and electron-electron interaction (U) makes iridates highly susceptible to small external perturbations, which can trigger the onset of novel types of electronic and magnetic states. Here we employ first principles calculations based on density functional theory and on the constrained random phase approximation to study how dimensionality and strain affect the strength of U and W in (SrIrO3)(m)/(SrTiO3()) superlattices. The result is a phase diagram explaining two different types of controllable magnetic and electronic transitions, spin-flop and insulator-to-metal, connected with the disruption of the J(eff) = 1/2 state which cannot be understood within a simplified local picture.

Organisation(en)

Computergestützte Materialphysik

Externe Organisation(en)

Chinese Academy of Sciences (CAS)

Journal

Physical Review B

Band

95

Anzahl der Seiten

7

ISSN

2469-9950

DOI

https://doi.org/10.1103/PhysRevB.95.115111

Publikationsdatum

03-2017

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103036 Theoretische Physik, 103015 Kondensierte Materie, 103009 Festkörperphysik

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Condensed Matter Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/3c0b5a6c-6d55-44d6-aa02-a04a628afd1f