Research output: Contribution to Journal/Magazine › Journal article › peer-review
<mark>Journal publication date</mark> | 11/2001 |
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<mark>Journal</mark> | EPL |
Issue number | 4 |
Volume | 56 |
Number of pages | 7 |
Pages (from-to) | 583-589 |
Publication Status | Published |
<mark>Original language</mark> | English |
A new mechanism for inelastic Andreev reflection at a ferromagnetic metal-superconductor interface is proposed, which consists of the simultaneous injection of a Cooper pair from the superconductor and the emission of a magnon inside the ferromagnet. We nd that this process generates an additional contribution to the subgap non-linear I(V) characteristics, which is asymmetric with respect to the sign of the bias voltage and is related to the density of states of magnons in the ferromagnet.