Influence of electron doping on the ground state of(Sr1−xLax)2IrO4

Autor:	Jeffrey W. Lynn, Mengliang Yao, Thomas Z. Ward, Cyril Opeil, Daniel Walkup, Stephen D. Wilson, Yang Zhao, Xiang Chen, Vidya Madhavan, Wei Tian, D. Parshall, Tom Hogan, Mani Pokharel, Wenwen Zhou
Rok vydání:	2015
Předmět:	Materials science Condensed matter physics Magnetism Electron Spin–orbit interaction Condensed Matter Physics Electronic Optical and Magnetic Materials Magnetization Phase (matter) Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Atomic physics Ground state Phase diagram
Zdroj:	Physical Review B. 92
ISSN:	1550-235X 1098-0121
Popis:	The evolution of the electronic properties of electron-doped (Sr1-xLax)2IrO4 is experimentally explored as the doping limit of La is approached. As electrons are introduced, the electronic ground state transitions from a spin-orbit Mott phase into an electronically phase separated state, where long-range magnetic order vanishes beyond x = 0:02 and charge transport remains percolative up to the limit of La substitution (x =0:06). In particular, the electronic ground state remains inhomogeneous even beyond the collapse of the parent state's long-range antiferromagnetic order, while persistent short-range magnetism survives up to the highest La-substitution levels. Furthermore, as electrons are doped into Sr2IrO4, we observe the appearance of a low temperature magnetic glass-like state intermediate to the complete suppression of antiferromagnetic order. Universalities and di erences in the electron-doped phase diagrams of single layer and bilayer Ruddlesden-Popper strontium iridates are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1c4cbd45433864d2bc17be672575238d https://doi.org/10.1103/physrevb.92.075125 Zobrazit plný text záznamu