Mukhopadhyay, Sourin ; Dhar, Sudesh Kumar ; Raychaudhuri, Pratap (2008) Study of spin fluctuations in Ni3±xAl1∓x using point contact Andreev reflection spectroscopy Applied Physics Letters, 93 (10). p. 102502. ISSN 0003-6951
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Official URL: http://aip.scitation.org/doi/abs/10.1063/1.2979687
Related URL: http://dx.doi.org/10.1063/1.2979687
Abstract
We report point contact Andreev reflection (PCAR) spectroscopy studies on Ni3±xAl1∓x with composition range spanning the ferromagnetic to paramagnetic phase boundary. PCAR studies performed using Nb tip as counterelectrode reveal that the superconducting quasiparticle lifetime (τ) and superconducting energy gap (Δ) decrease with increasing spin fluctuation in the normal metal electrode. Our study reveals that PCAR could be a useful probe to study spin fluctuations in systems that are on the verge of magnetic instability.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| ID Code: | 105207 |
| Deposited On: | 25 Dec 2017 12:11 |
| Last Modified: | 25 Dec 2017 12:11 |
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