Magnetism in the Interfaces of the Sandwiched PbTiO\(_3\)/LaAlO\(_3\)/SrTiO\(_3\) Hetero-structure

Bach Huong Giang; Nguyen Thuy Trang; Tran Van Nam; Bach Thanh Cong

doi:10.15625/0868-3166/25/3/4423

Magnetism in the Interfaces of the Sandwiched PbTiO\(_3\)/LaAlO\(_3\)/SrTiO\(_3\) Hetero-structure

Bach Huong Giang, Nguyen Thuy Trang, Tran Van Nam, Bach Thanh Cong

Author affiliations

Authors

Bach Huong Giang Computational Material Science Lab, Faculty of Physics, Hanoi University of Science, Vietnam National University, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam
Nguyen Thuy Trang
Tran Van Nam
Bach Thanh Cong

DOI:

https://doi.org/10.15625/0868-3166/25/3/4423

Keywords:

Magnetism, LaAlO\(_3\)/SrTiO\(_3\), PbTiO\(_3\)/LaAlO\(_3\)/SrTiO\(_3\).

Abstract

We investigate the effect of PbTiO3 on the LaAlO\(_3\)/SrTiO\(_3\) hetero-structure by density functional theory, where the asymmetry
sandwich not only forms a quasi-two dimensional electron gas but also reveals a ferromagnetic state in the TiO\(_2\) interfaces. It
is found out that magnetic moments of TiO\(_2\) interface layers are around 0.18 \(\mu_B\) while they are mostly negligible in the pure LaAlO\(_3\)/SrTiO\(_3\) system. Even though magnetic moments are mainly produced by Ti t2g orbitals, oxygen plays a key role in the formation of the ferromagnetic state since polar distortions primarily occur in oxygen positions of the SrTiO\(_3\) and PbTiO\(_3\) sides in opposite directions.

Downloads

Download data is not yet available.

Metrics

Metrics Loading ...

Downloads

Published

24-11-2015

How to Cite

[1]

B. H. Giang, N. T. Trang, T. V. Nam, and B. T. Cong, “Magnetism in the Interfaces of the Sandwiched PbTiO\(_3\)/LaAlO\(_3\)/SrTiO\(_3\) Hetero-structure”, Comm. Phys., vol. 25, no. 3, p. 219, Nov. 2015.

IEEE

Download Citation

Issue

Vol. 25 No. 3 (2015)

Section

Papers

License

Authors who publish with CIP agree with the following terms:

The manuscript is not under consideration for publication elsewhere. When a manuscript is accepted for publication, the author agrees to automatic transfer of the copyright to the editorial office.
The manuscript should not be published elsewhere in any language without the consent of the copyright holders. Authors have the right to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal’s published version of their work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are encouraged to post their work online (e.g., in institutional repositories or on their websites) prior to or during the submission process, as it can lead to productive exchanges or/and greater number of citation to the to-be-published work (See The Effect of Open Access).