[en] Structural instabilities of CaMnO3 are investigated from first principles. We point out that, on top of a strong antiferrodistortive instability responsible for its orthorhombic ground state, the cubic perovskite structure of CaMnO3 also exhibits a weak ferroelectric instability. Although ferroelectricity is suppressed by antiferrodistortive motions, we show that it can be favored using strain or chemical engineering in order to make CaMnO3 multiferroic. We finally highlight that the ferroelectric instability of CaMnO3 is Mn-dominated. This illustrates that, contrary to common belief, ferroelectricity and magnetism are not necessarily exclusive but can be driven by the same cation.
Disciplines :
Physics
Author, co-author :
Bhattacharjee, Satadeep
Bousquet, Eric ; Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Ghosez, Philippe ; Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Language :
English
Title :
Engineering Multiferroism in CaMnO3
Publication date :
2009
Journal title :
Physical Review Letters
ISSN :
0031-9007
eISSN :
1079-7114
Publisher :
American Physical Society, Ridge, United States - New York
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Physics of Ferroelectrics: A Modern Perspective, edited by, K.M. Rabe, Ch.H. Ahn, and, J.-M. Triscone, Top. Appl. Phys. Vol. 105 (Springer, Berlin, 2007).
M. Fiebig, J. Phys. D JPAPBE 0022-3727 38, R123 (2005). 10.1088/0022-3727/38/8/R01
R.R. Ramesh and N. Spaldin, Nature Mater. 6, 21 (2007). NMAACR 1476-1122 10.1038/nmat1805
A. Filippetti and N.A. Hill, Phys. Rev. B PRBMDO 0163-1829 65, 195120 (2002). 10.1103/PhysRevB.65.195120
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.