Report
Disorder-driven superconductor-normal metal phase transition in quasi-one-dimensional organic conductors
| العنوان: | Disorder-driven superconductor-normal metal phase transition in quasi-one-dimensional organic conductors |
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| المؤلفون: | Nakhmedov, E., Oppermann, R. |
| المصدر: | Published in Phys. Rev. B 81, 134511 (2010) |
| سنة النشر: | 2011 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | Effects of non-magnetic disorder on the critical temperature T_c and on diamagnetism of quasi-one-dimensional superconductors are reported. The energy of Josephson-coupling between wires is considered to be random, which is typical for dirty organic superconductors. We show that this randomness destroys phase coherence between wires and that T_c vanishes discontinuously at a critical disorder-strength. The parallel and transverse components of the penetration-depth are evaluated. They diverge at different critical temperatures T_c^{(1)} and T_c, which correspond to pair-breaking and phase-coherence breaking respectively. The interplay between disorder and quantum phase fluctuations is shown to result in quantum critical behavior at T=0, which manifests itself as a superconducting-normal metal phase transition of first-order at a critical disorder strength. Comment: 12 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.81.134511 |
| URL الوصول: | http://arxiv.org/abs/1103.1806 |
| رقم الانضمام: | edsarx.1103.1806 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.81.134511 |
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