Modulation of superconductivity by spin canting in a hybrid antiferromagnet/superconductor oxide

Mani, Awadhesh; Kumary, T. Geetha; Hsu, Daniel; Lin, J. G.; Chern, Chyh-Hong
February 2009
Applied Physics Letters;2/16/2009, Vol. 94 Issue 7, pN.PAG
Academic Journal
The proximity effect of a C-type antiferromagnet with the spin canting at low temperature is investigated in the hybrid Nd0.35Sr0.65MnO3/YBa2Cu3O7 oxide system through magnetic and transport measurements. It is found that the onset of a spin-canted state destroys partially the superconducting order parameter. Interestingly, due to the instability of this spin-canted state, zero resistivity recovers at the offset of spin canting. Our result demonstrates clearly the high sensitivity of superconducting order parameter to a modulation of internal field.


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