Journal
PHYSICAL REVIEW B
Volume 81, Issue 21, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.214435
Keywords
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Funding
- Research Corporation [CC6756]
- NSF [0619909]
- NRF of Korea [200802553]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0619909] Funding Source: National Science Foundation
- National Research Foundation of Korea [2008-2002553] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We investigate the proximity effect in a superconductor/ferromagnet (S/F) hybrid system with a noncollinear magnetic configuration. A new structure of an S/exchange-spring (ES) magnet is fabricated, where an ES magnet is employed as an F layer since the magnetization configuration is varied from a collinear state to a noncollinear state by a rotating external magnetic field in a well controllable way. We found that the resistance decreases and the superconducting transition temperature increases, as noncollinearity is introduced starting from a collinear state. We interpret that our experimental observation is due to the contribution of the odd-triplet superconducting condensate that survived in a noncollinear magnetization configuration in the ES magnet.
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