Point-contact Andreev-reflection spectroscopy in ReFeAsO1-xFx (Re = La, Sm): Possible evidence for two nodeless gaps

Physica C: Superconductivity and its Applications

Volumn 469, Issue 9-12, 2009, Pages 512-520

  Gonnelli, R S ^a   Daghero, D ^a   Tortello, M ^a   Ummarino, G A ^a   Stepanov, V A ^b   Kremer, R K ^c   Kim, J S ^c   Zhigadlo, N D ^d   Karpinski, J ^d  

^a POLITECNICO DI TORINO   (Italy)

^b LEBEDEV PHYSICAL INSTITUTE   (Russian Federation)

^c MAX PLANCK INSTITUT FÜR FESTKÖRPERFORSCHUNG   (Germany)

^d ETH ZURICH   (Switzerland)

Author keywords

Andreev reflection; Iron pnictides; Point contact spectroscopy

Indexed keywords

ADDITIONAL STRUCTURES; ANDREEV-REFLECTION; DIFFERENTIAL CONDUCTANCES; K SPACES; LOW BIAS; MAGNETIC TRANSITIONS; NEW SUPERCONDUCTORS; NORMAL STATE; PAIRING MECHANISMS; POINT-CONTACT SPECTROSCOPY; RARE-EARTH; REFLECTION SPECTROSCOPIES; SMALL GAPS; SUPERCONDUCTING STATE; TEMPERATURE DEPENDENCES; ZERO BIAS;

EARTH (PLANET); ELECTRIC CHARGE; ELECTROMAGNETIC WAVE REFLECTION; LANTHANUM; POLYCRYSTALS; SUPERCONDUCTIVITY;

POINT CONTACTS;

EID: 65549085631     PISSN: 09214534     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.physc.2009.03.039     Document Type: Article

References (54)

1. Kamihara Y., Watanabe T., Hirano M., and Hosono H. J. Am. Chem. Soc. 130 (2008) 3296-3297
2. Chen X.H., Wu T., Wu G., Liu R.H., Chen H., and Fang D.F. Nature 453 (2008) 761-762
3. Ren Z.A., et al. Europhys. Lett. 82 (2008) 57002
4. Cong Ren, Zhao-Sheng Wang, Huan Yang, Xiyu Zhu, Lei Fang, Gang Mu, Lei Shan, Hai-Hu Wen, (2008) arxiv:/0804.1726.
5. Luetkens H., Klauss H.-H., Khasanov R., Amato A., Klingeler R., Hellmann I., Leps N., Kondrat A., C.Hess, Köhler A., Behr G., Werner J., and Büchner B. Phys. Rev. Lett. 101 (2008) 097009
6. Ahilan K., Ning F.L., Imai T., Sefat A.S., Jin R., McGuire M.A., Sales B.C., and Mandrus D. Phys. Rev. B 78 (2008) 100501 (R)
7. Grafe H.-J., Paar D., Lang G., Curro N.J., Behr G., Werner J., Hamann-Borrero J., Hess C., Leps N., Klingeler R., and Büchner B. Phys. Rev. Lett. 101 (2008) 047003
8. Mu G., Zhu X., Fang L., Shan L., Ren C., and Wen H.-H. Chin. Phys. Lett. 25 (2008) 2221
9. Shan L., Wang Y., Zhu X., Mu G., Fang L., Ren C., and Wen H.-H. Europhys. Lett. 83 (2008) 57004
10. Millo O., Asulin I., Yuli O., Felner I., Ren Z.-A., Shen X.-L., Che G.-C., and Zhao Z.-X. Phys. Rev. B 78 (2008) 092505
11. Wang Y., Shan L., Fang L., Cheng P., Ren C., and Wen H.-H. Supercond. Sci. Technol. 22 (2009) 015018
12. M. C. Boyer, Kamalesh Chatterjee, W. D. Wise, G. F. Chen, J. L. Luo, N. L. Wang, E. W. Hudson, 2008, arxiv:/0806.4400.
13. Kohama Y., Kamihara Y., Kawaji H., Atake T., Hirano M., and Hosono H. J. Phys. Soc. Jpn. 77 (2008) 094715
14. Kuroki K., Onari S., Arita R., Usui H., Tanaka Y., Kontani H., and Aoki H. Phys. Rev. Lett. 101 (2008) 087004
15. Ding H., Richard P., Nakayama K., Sugawara T., Arakane T., Sekiba Y., Takayama A., Souma S., Sato T., Takahashi T., Wang Z., Dai X., Fang Z., Chen G.F., Luo J.L., and Wang N.L. Europhys. Lett. 83 (2008) 47001
16. K. Nakayama, T. Sato, P. Richard, Y.-M. Xu, Y. Sekiba, S. Souma, G. F. Chen, J. L. Luo, N. L. Wang, H. Ding, T. Takahashi, 2008, arxiv:/0812.0663.
17. Kondo T., Santander-Syro A.F., Copie O., Liu C., Tillman M.E., Mun E.D., Schmalian J., Bud'ko S.L., Tanatar M.A., Canfield P.C., and Kaminski A. Phys. Rev. Lett. 101 (2008) 147003
18. Li G., Hu W.Z., Dong J., Li Z., Zheng P., Chen G.F., Luo J.L., and Wang N.L. Phys. Rev. Lett. 101 (2008) 107004
19. Gang Mu, Huiqian Luo, Zhaosheng Wang, Lei Shan, Cong Ren, Hai-Hu Wen, 2008, arxiv:/0808.2941.
20. Cong Ren, Zhao-sheng Wang, Hui-qian Luo, Huan Yang, Lei Shan, Hai-Hu Wen, 2008, arxiv:/0808.0805.
21. Szabó P., Pribulová Z., Pristáš G., Bud'ko S.L., Canfield P.C., and Samuely P. Phys. Rev. B 79 (2009) 012503
22. Mazin I.I., Singh D.J., Johannes M.D., and Du M.H. Phys. Rev. Lett. 101 (2008) 057003
23. Hunte F., Jaroszynski J., Gurevich A., Larbalestier D.C., Jin R., Sefat A.S., McGuire M.A., Sales B.C., Christen D.K., and Mandrus D. Nature 453 (2008) 903-905
24. Kohama Y., Kamihara Y., Riggs S., Balakirev F.F., Atake T., Jaime M., Hirano M., and Hosono H. Europhys. Lett. 84 (2008) 37005
25. L. Balicas, A. Gurevich, Y. J. Jo, J. Jaroszynski, D. C. Larbalestier, R. H. Liu, H. Chen, X. H. Chen, N. D. Zhigadlo, S. Katrych, Z. Bukowski, J. Karpinski, 2008, arxiv:/0809.4223.
26. L. Malone, J.D. Fletcher, A. Serafin, A. Carrington, N.D. Zhigadlo, Z. Bukowski, S. Katrych, J. Karpinski, 2008, arxiv:/0806.3908.
27. Chen T.Y., Tesanovic Z., Liu R.H., Chen X.H., and Chien C.L. Nature 453 (2008) 1224-1227
28. Samuely P., Szabo P., Pribulova Z., Tillman M.E., Bud'ko S., and Canfield P.C. Supercond. Sci. Technol. 22 (2009) 014003
29. Yates K.A., Cohen L.F., Ren Z.-A., Yang J., Lu W., Dong X.-L., and Zhao Z.-X. Supercond. Sci. Technol. 21 (2008) 092003
30. Fasano Y., and Maggio-Aprile I. Private Commun. (2008)
31. M. H. Pan, X. B. He, G. R. Li, J. F. Wendelken, R. Jin, A. S. Sefat, M. A. McGuire, B. C. Sales, D. Mandrus, E. W. Plummer, 2008, arxiv:/0808.0895.
32. R.S. Gonnelli, D. Daghero, M. Tortello, G.A. Ummarino, V.A. Stepanov, J.S. Kim, R.K. Kremer, 2008, arxiv:/0807.3149.
33. Gonnelli R.S., Daghero D., Ummarino G.A., Stepanov V.A., Jun J., Kazakov S.M., and Karpinski J. Phys. Rev. Lett. 89 (2002) 247004
34. Gonnelli R.S., Daghero D., Calzolari A., Ummarino G.A., Dellarocca V., Stepanov V.A., Kazakov S.M., Zhigadlo N., and Karpinski J. Phys. Rev. B 71 (2005) 060503 (R)
35. Gonnelli R.S., Daghero D., Ummarino G.A., Calzolari A., Tortello M., Stepanov V.A., Zhigadlo N.D., Rogacki K., Karpinski J., Bernardini F., and Massidda S. Phys. Rev. Lett. 97 (2006) 037001
36. D. Daghero, M. Tortello, R.S. Gonnelli, V.A. Stepanov, N.D. Zhigadlo, J. Karpinski, 2008, arxiv:/0812.1141.
37. Yanson I.K. Sov. Phys. JETP 39 (1974) 506
38. Gonnelli R.S., Daghero D., Delaude D., Tortello M., Ummarino G.A., Stepanov V.A., Kim J.S., Kremer R.K., Sanna A., Profeta G., and Massidda S. Phys. Rev. Lett. 100 (2008) 207004
39. Singh D.J., and Du M.-H. Phys. Rev. Lett. 100 (2008) 237003
40. Sheet G., Mukhopadhyay S., and Raychaudhuri P. Phys. Rev. B 69 (2004) 134507
41. Kashiwaya S., Tanaka Y., Koyanagi M., and Kajimura K. Phys. Rev. B 53 (1996) 2667
42. Daghero D., Gonnelli R.S., Ummarino G.A., Stepanov V.A., Jun J., Kazakov S.M., and Karpinski J. Physica C 385 (2003) 255
43. Gonnelli R.S., Daghero D., Ummarino G.A., Tortello M., Delaude D., Stepanov V.A., and Karpinski J. Physica C 456 (2007) 134
44. S. Weyeneth, R. Puzniak, U. Mosele, N. D. Zhigadlo, S. Katrych, Z. Bukowski, J. Karpinski, S. Kohout, J. Roos and H. Keller, J. Supercond. Nov. Magn. 22 (2009) 325.
45. Zhao L., Liu H., Zhang W., Meng J., Jia X., Liu G., Dong X., Chen G.F., Luo J.L., Wang N.L., Wang G., Zhou Y., Zhu Y., Wang X., Zhao Z., Xu Z., Chen C., and Zhou X.J. Chin. Phys. Lett. 25 (2008) 4402
46. R. Khasanov, A. Amato, H.-H. Klauss, H. Luetkens, Ch. Niedermayer, G.L. Sun, C.T. Lin, J.T. Park, D.S. Inosov, V. Hinkov, 2009, arxiv:/0901.2329.
47. Benfatto L., Capone M., Caprara S., Castellani C., and Di Castro C. Phys. Rev. B 78 (2008) 140502 R
48. Pleceník A., Grajcar M., Beňačka S., Seidel P., and Pfuch A. Phys. Rev. B 49 (1994) 10016
49. Chalsani P., Upadhyay S.K., Ozatay O., and Buhrman R.A. Phys. Rev. B 75 (2007) 094417
50. Daghero D., Delaude D., Calzolari A., Tortello M., Ummarino G.A., Gonnelli R.S., Stepanov V.A., Zhigadlo N.D., Katrych S., and Karpinski J. J. Phys. Condens. Matter 20 (2008) 085225
51. Hasselbach K., Kirtley J.R., and Lejay P. Phys. Rev. B 46 (1992) 5826
52. de la Cruz C., et al. Nature 453 (2008) 899-902
53. I. I. Mazin, J. Schmalian, contribution to the present Special Issue.
54. J. Karpinski et al., Contribution to the present Special Issue.