No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
Unconventional Andreev reflection on the quasi-one-dimensional superconductor Nb2
2.for a recent review, please see, J. P. Carbotte, La Physique au Canada 67, 75 (2011).
3.High Temperature Superconductivity, edited by K. S. Bedell, D. Coffey, D. E. Meltzer, D. Pines, and J. R. Schrieffer (Addison-Wesley, New York, 1990).
5.The Physics of Organic Superconductors and Conductors, edited by Andrei Lebed (Springer, Berlin, 2008).
6.S. H. Khim, B. S. Lee, K.-Y. Choi, B.-G. Jeon, D. H. Jang, D. Patil, S. Patil, R. Y. Kim, E. S. Choi, S. S. Lee, J. J. Yu, and K. H. Kim, New J. Phys. 15, 123031 (2013).
7.Q. Zhang, G. Li, D. Rhodes, A. Kiswandhi, T. Besara, B. Zneg, J. Sun, T. Siegrist, M. D. Johannes, and L. Balicas, Sci. Rep. 3, 1446 (2013).
, W. H. Jiao
, X. C. Hong
, Z. Zhang
, L. P. He
, P. L. Cai
, J. Zhang
, G. H. Cao
, and S. Y. Li
16.Y. Bugoslavsky, Y. Miyoshi, G. K. Perkins, A. V. Bernov, Z. Lockman, J. L. MacManus-Driscoll, L. F. Cohen, A. D. Caplin, H. Y. Zhai, M. P. Paranthaman, and H. M. Christen, Supercond. Sci. Tech. 15, 526 (2002).
19.A. F. Andreev, Sov. Phys. JETP 19, 1228 (1964).
25.D. Daghero, M. Tortello, GT. A. Ummarino, J.-C. Griveau, E. Colineau, R. Eloirdi, A. B. Shick, J. Kolorenc, A. I. Lichtenstein, and R. Caciuffo, Nature Commun. 3, 786 (2012).
29.K. Jin, G. He, X. H. Zhang, S. Maruyama, S. Yasui, R. Suchoski, J. M. Shin, Y. P. Jiang, H. S. Yu, L. Shan, R. L. Greene, and I. Takeuchi, Nature Commun. 6, 7183 (2015).
Article metrics loading...
We have carried out Andreev reflection measurements on point contact junctions between normal metal and single crystals of the quasi-one-dimensional (Q1D) superconductorNb2PdxSe5 (Tc ∼ 5.5 K). The contacts of the junctions were made on either self-cleaved surfaces or crystal edges so that the current flow directions in the two types of junctions are different, and the measurements provide a directional probe for the order parameter of the superconductor.Junctions made in both configurations show typical resistances of ∼20-30 Ohms, and a clear double-gap Andreev reflection feature was consistently observed at low temperatures. Quantitative analysis of the conductance spectrum based on a modified Blonder-Tinkham-Klapwijk (BTK) model suggests that the amplitudes of two order parameters may have angular dependence in the a-c plane. Moreover, the gap to transition temperature ratio (Δ/TC) for the larger gap is substantially higher than the BCS ratio expected for phonon-mediated s-wave superconductors. We argue that the anisotropicsuperconducting order parameter and the extremely large gap to transition temperature ratio may be associated with an unconventional pairing mechanism in the inorganic Q1D superconductor.
Full text loading...
Most read this month