Jenni, K., Wirth, F., Dietrich, K., Berger, L., Sidis, Y., Kunkemoeller, S., Grams, C. P., Khomskii, D., I, Hemberger, J. and Braden, M. (2020). Evidence for current-induced phase coexistence in Ca2RuO4 and its influence on magnetic order. Phys. Rev. Mater., 4 (8). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2475-9953
Full text not available from this repository.Abstract
Combining quasistatic and time-resolved transport measurements with x-ray and neutron diffraction experiments we study the nonequilibrium states that arise in pure and in Ti-substituted Ca2RuO4 under the application of current densities. Time-resolved studies of the current-induced switching find a slow conductance relaxation that can be identified with heating and a fast one that unambiguously proves an intrinsic mechanism. The current-induced phase transition leads to complex diffraction patterns. Separated Bragg reflections that can be associated with the metallic and insulating phases by their lattice parameters, indicate a real structure with phase coexistence that strongly varies with temperature and current strength. A third contribution with a c lattice constant in between those of metallic and insulating phases appears upon cooling. At low current densities, this additional phase appears below similar to 100 K and is accompanied by a suppression of the antiferromagnetic order that otherwise can coexist with current carrying states. A possible origin of the intermediate phase is discussed.
Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||||||||||
Creators: |
|
||||||||||||||||||||||||||||||||||||||||||||
URN: | urn:nbn:de:hbz:38-324029 | ||||||||||||||||||||||||||||||||||||||||||||
DOI: | 10.1103/PhysRevMaterials.4.085001 | ||||||||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Phys. Rev. Mater. | ||||||||||||||||||||||||||||||||||||||||||||
Volume: | 4 | ||||||||||||||||||||||||||||||||||||||||||||
Number: | 8 | ||||||||||||||||||||||||||||||||||||||||||||
Date: | 2020 | ||||||||||||||||||||||||||||||||||||||||||||
Publisher: | AMER PHYSICAL SOC | ||||||||||||||||||||||||||||||||||||||||||||
Place of Publication: | COLLEGE PK | ||||||||||||||||||||||||||||||||||||||||||||
ISSN: | 2475-9953 | ||||||||||||||||||||||||||||||||||||||||||||
Language: | English | ||||||||||||||||||||||||||||||||||||||||||||
Faculty: | Unspecified | ||||||||||||||||||||||||||||||||||||||||||||
Divisions: | Unspecified | ||||||||||||||||||||||||||||||||||||||||||||
Subjects: | no entry | ||||||||||||||||||||||||||||||||||||||||||||
Uncontrolled Keywords: |
|
||||||||||||||||||||||||||||||||||||||||||||
URI: | http://kups.ub.uni-koeln.de/id/eprint/32402 |
Downloads
Downloads per month over past year
Altmetric
Export
Actions (login required)
View Item |