title: Polarity-tunable spin transport in all-oxide multiferroic tunnel junctions.
abstract: A multiferroic tunnel junction (MFTJ) promisingly offers multinary memory states in response to electric- and magnetic-fields, referring to tunneling electroresistance (TER) and tunneling magnetoresistance (TMR), respectively. In spite of recent progress, a substantial number of questions concerning the understanding of these two intertwined phenomena still remain open, e.g. the role of microstructural/chemical asymmetry at the interfaces of the junction and the effect of an electrode material on the MFTJ properties. In this regard, we look into the multiferroic effect of all-complex-oxide MFTJ (La0.7Sr0.3MnO3/Pb(Zr0.3Ti0.7)O3/La0.7Sr0.3MnO3). The results reveal apparent TER-TMR interplay-captured by the reversible electric-field control of the TMR effect. Finally, microscopy analysis on the MFTJ revealed that the observed TER-TMR interplay is perhaps mediated by microstructural and chemical asymmetry in our nominally symmetric MFTJ.
authors.affiliation: Nanoelektronik, Technische Fakultät, Christian-Albrechts-Universität zu Kiel, Kiel 24143, Germany. soro@tf.uni-kiel.de hko@tf.uni-kiel.de.
authors.forename: Rohit
authors.initials: R
authors.lastname: Soni
authors.affiliation: Nanoelektronik, Technische Fakultät, Christian-Albrechts-Universität zu Kiel, Kiel 24143, Germany. soro@tf.uni-kiel.de hko@tf.uni-kiel.de.
authors.forename: Adrian
authors.initials: A
authors.lastname: Petraru
authors.affiliation: Highly Correlated Matter Research Group, Physics Department, University of Johannesburg P. O. Box 524, Auckland Park 2006, South Africa.
authors.forename: Harikrishnan S
authors.initials: HS
authors.lastname: Nair
authors.affiliation: Nanoelektronik, Technische Fakultät, Christian-Albrechts-Universität zu Kiel, Kiel 24143, Germany. soro@tf.uni-kiel.de hko@tf.uni-kiel.de.
authors.forename: Ondrej
authors.initials: O
authors.lastname: Vavra
authors.affiliation: Nanoelektronik, Technische Fakultät, Christian-Albrechts-Universität zu Kiel, Kiel 24143, Germany. soro@tf.uni-kiel.de hko@tf.uni-kiel.de.
authors.forename: Martin
authors.initials: M
authors.lastname: Ziegler
authors.affiliation: Centre for Electronic Materials, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea. dsjeong@kist.re.kr.
authors.forename: Seong Keun
authors.initials: SK
authors.lastname: Kim
authors.affiliation: Centre for Electronic Materials, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea. dsjeong@kist.re.kr.
authors.forename: Doo Seok
authors.initials: DS
authors.lastname: Jeong
authors.affiliation: Nanoelektronik, Technische Fakultät, Christian-Albrechts-Universität zu Kiel, Kiel 24143, Germany. soro@tf.uni-kiel.de hko@tf.uni-kiel.de.
authors.forename: Hermann
authors.initials: H
authors.lastname: Kohlstedt