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Title: Spin injection induced phase transition in YBa{sub 2}Cu{sub 3}O{sub 7−δ}/Nd{sub 0.35}Sr{sub 0.65}MnO{sub 3} bilayer

The spin injection effects from C-type antiferromagnetic Nd{sub 0.35}Sr{sub 0.65}MnO{sub 3} (NSMO) to superconductor YBa{sub 2}Cu{sub 3}O{sub 7−δ} (YBCO) are investigated via the measurement of temperature dependent resistivity with input current from 10{sup −2 }mA to 90 mA. The superconducting transition temperature (T{sub co}) of YBCO decreases with increasing current but at a higher rate with larger thickness of NSMO. Two spin states below T{sub co} are identified as non-equilibrium spin-state and pair-breaking state judging from the width of transition. In particular, the transition from former to later one is observed with NSMO = 30 nm at the current of 30 mA.
Authors:
 [1] ;  [2] ;  [1] ;  [3]
  1. Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617 Taiwan (China)
  2. (China)
  3. Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617 Taiwan (China)
Publication Date:
OSTI Identifier:
22410148
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROELECTRIC MATERIALS; ANTIFERROMAGNETISM; BARIUM OXIDES; COPPER OXIDES; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; HIGH-TC SUPERCONDUCTORS; LAYERS; MANGANATES; NEODYMIUM COMPOUNDS; SPIN; STRONTIUM COMPOUNDS; TEMPERATURE DEPENDENCE; TRANSITION TEMPERATURE; YTTRIUM OXIDES