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Title: Coupling of magnetic field and lattice strain and its impact on electronic phase separation in La{sub 0.335}Pr{sub 0.335}Ca{sub 0.33}MnO{sub 3}/ferroelectric crystal heterostructures

Phase-separated La{sub 0.335}Pr{sub 0.335}Ca{sub 0.33}MnO{sub 3} films were epitaxially grown on (001)- and (111)-oriented ferroelectric single-crystal substrates. Upon poling along the [001] or [111] direction, dramatic decrease in resistance, up to 99.98%, and complete melting of the charge-ordered phase were observed, caused by poling-induced strain rather than accumulation of electrostatic charge at interface. Such poling-induced strain effects can be effectively tuned by a magnetic field and mediated by electronic phase separation. In particular, our findings show that the evolution of the strength of electronic phase separation against temperature and magnetic field can be determined by measuring the strain-tunability of resistance [(ΔR/R){sub strain}] under magnetic fields.
Authors:
; ; ; ; ; ;  [1] ;  [1] ;  [2] ; ;  [3] ;  [4]
  1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China)
  2. (China)
  3. Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Hong Kong (China)
  4. Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei 230026 (China)
Publication Date:
OSTI Identifier:
22253157
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 103; Journal Issue: 26; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BUILDUP; COUPLING; EPITAXY; FERROELECTRIC MATERIALS; FILMS; INTERFACES; MAGNETIC FIELDS; MELTING; MONOCRYSTALS; STRAINS; SUBSTRATES