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Real-Space Vortex Glass Imaging and the Vortex Phase Diagram of SnMo6S8

Lortz, R.
Demuer, A.
Antunes, A. B.
Paré, A.
Salloum, D.
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Published in Physical Review Letters. 2009, vol. 103, no. 25
Abstract Using scanning tunneling microscopy at 400 mK, we have obtained maps of around 100 vortices in SnMo6S8 from 2–9 T. The orientational and positional disorder at 5 and 9 T show that these are the first large-scale images of a vortex glass. At higher temperature a magnetization peak effect is observed, whose upper boundary coincides with a lambda anomaly in the specific heat. Our data favor a kinetic glass description of the vortex melting transition, indicating that vortex topological disorder persists at fields and temperatures far below the peak effect in low-Tc superconductors.
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Research group Groupe Senatore
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PETROVIC, Alexander et al. Real-Space Vortex Glass Imaging and the Vortex Phase Diagram of SnMo6S8. In: Physical Review Letters, 2009, vol. 103, n° 25. doi: 10.1103/PhysRevLett.103.257001 https://archive-ouverte.unige.ch/unige:36270

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Deposited on : 2014-05-05

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