Investigation of spin-polarized carrier injection effect in|YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>/SrTiO<sub>3</sub>/La<sub>0.67</sub>/Sr<sub>0.33</sub>MnO<sub>3</sub> and YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>/La<sub>0.67</sub>Sr<sub>0.33</sub>MnO<sub>3</sub> heterostructures
TL;DRAbstract
We report preparation and electrical properties of the YBa 2 Cu 3 O 7 /SrTiO 3 (d ( 5.0 nm)/La 0.67 Sr 0.33 MnO 3 (YBCO/STO/LSMO) and YBCO/LSMO multilayer structures grown heteroepitaxially on LaAlO 3 (100) substrates by single source pulsed injection MOCVD. The heterostructures were patterned in a cross-strip geometry to perform electrical measurements at T= 78+300 K under magnetic field μ 0 H= 0+16 T using 4-probe dc method. Suppression of a supercurrent of the patterned YBCO stripes was indicated for the YBCO/LSMO heterostructure by injecting tunneling spin-polarized current from the underlying FM layer. The transport effects were modelled taking into account current redistribution in the adjacent conducting HTS and FM layers.
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We report preparation and electrical properties of the YBa 2 Cu 3 O 7 /SrTiO 3 (d ( 5.0 nm)/La 0.67 Sr 0.33 MnO 3 (YBCO/STO/LSMO) and YBCO/LSMO multilayer structures grown heteroepitaxially on LaAlO 3 (100) substrates by single source pulsed injection MOCVD. The heterostructures were patterned in a cross-strip geometry to perform electrical measurements at T= 78+300 K under magnetic field μ 0 H= 0+16 T using 4-probe dc method. Suppression of a supercurrent of the patterned YBCO stripes was indicated for the YBCO/LSMO heterostructure by injecting tunneling spin-polarized current from the underlying FM layer. The transport effects were modelled taking into account current redistribution in the adjacent conducting HTS and FM layers.
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