Abstract
‘Non-resonant Microwave Absorption’ (NRMA) or the ‘Low field microwave absorption’ (LFMA) measurements on high-quality polycrystalline SmFeAsO0.80F0.20 superconducting sample were carried as functions of temperature and microwave power. The LFMA line shape is complex with two peaks namely; broad peak 1 and narrow peak 2 akin to one reported in SmFeAsO0.88F0.12 as reported by Onyancha et al (Supercond. Nov. Magn. 28, 2927–2934, 2015). This unquestionably illustrates that these peaks are a common feature in F-doped SmFeAsO. The LFMA signal as a function of temperature reveals that T c − T ∗ = 1K in SmFeAsO0.80F0.20 compared to 4 K in SmFeAsO0.88F0.12 (T ∗ is the characteristic temperature at which the narrow peak appears as we cool down the sample below T c); hence inferring that the narrow peak is fluorine doping dependent. Furthermore, LFMA signal evolution with microwave power does not show phase reversal (anomalous absorption) at 2.227 mW which is a stark contrast to what was observed in SmFeAsO0.88F0.12 as reported by Onyancha et al (Physica C: Supercond. Appl. 533:49–52, 2017). The absence of phase reversal within measured microwave power indicates presence of hysteretic Josephson junction. These findings establish few non-superconducting inclusions in SmFeAsO0.80F0.20 system.
Similar content being viewed by others
References
Onyancha, R.B., Shimoyama, J., Singh, S.J., Ogino, H., Srinivasu, V.V.: J. Supercond. Nov. Magn. 28, 2927–2934 (2015)
Onyancha, R.B., Shimoyama, J., Singh, S.J., Hayashi, K., Ogino, H., Srinivasu, V.V.: Physica C: Supercond. Appl. 533, 49–52 (2017)
Kamihara, Y., Watanabe, T., Hirano, M., Hosono, H.: J. Am. Chem. Soc. 130, 3296 (2008)
Hosono, H., Kuroki, K.: Phyica C 514, 399–422 (2015)
Bhat, S.V., Panguly, P., Rao, C.N.R.: Pramana J. Phys. 28, L425–L427 (1987)
Bhat, S.V., Ganguly, P., Ramakrishnan, T.V., Rao, C.N.R.: Pramana J. Phys 20, L559–L563 (1987)
Blazey, K.W., Muller, K.A., Bednorz, J.G., Berlinger, W., Amoretti, G., Buluggiu, E., Vera, A., Matacotta, F.C.: Phys. Rev. B 36, 7241 (1987)
Dunny, R., Hautala, J., Ducharme, S., Lee, B., Symko, O.G., Taylor, P.C., Zheng, D.J., Xu, J.A.: Phys. Rev. B 36, 2361 (1987)
Stalder, M., Stefanicki, G., Warden, M., Portis, A.M., Waldner, F.: Physica C 153–155, 659–660 (1988)
Veinger, A., Zabrodiskii, T., Tisnek, J.: Alloys Compd. 751, 369 (2004)
Montiel, H., Alvarez, G., Betancourt, I., Zamarano, R., Valenzuela, R.: Appl. Phys. Lett. 86, 072503 (2005)
Alvarez, G., Zamorano, R.: J. Alloys Compd. 231, 369 (2004)
Rakhimov, R., Ries, H., Jones, D., Glebov, L.: Appl. Phys. Lett. 751, 76 (2000)
Gavi, H., Ngom, B.D., Beye, A.C., Strydom, A.M., Srinivasu, V.V., Chaker, M., Manyala, N.: J. Magn. Magn. Mater. 324, 1172 (2012)
Srinivasu, V.V., Pinto, R., Sastry, M.D.: Appl. Supercond. 4, 195–201 (1996)
Knauf, N., Fischer, J., Schmidt, P., Roden, B., Borowski, R., Buchner, B., Micklitz, H., Freimuth, A., Kataev, V., Khomskii, D.I.: Europhys. Lett. 35, 541–546 (1996)
Knauf, N., Fischer, J., Schmidt, P., Roden, B., Borowski, R., Buchner, B., Micklitz, H., Freimuth, A., Khomskii, D.I., Kataev, V.: Phys. C 299, 125–135 (1998)
Ji, L., Rzchowski, M.S., Anand, N., Tinkham, M.: Phys. Rev. B 47, 470 (1993)
Panarina, N.Y., Talanov, Y.I., Shaposhnikova, T.S., Beysengulov, N.R., Vavilova, E.: Phys. Rev. B 81, 224509 (2010)
Talanov, Y., Beisengulov, N., Kornilov, G., Shaposhnikova, T., Vavilova, E., Nacke, C., Panarina, S., Hess, C., Kataev, V., Buchner, B.: Supercond. Sci. Technol. 26, 045015 (2013)
Onyancha, R.B., Shimoyama, J., Singh, S.J., Ogino, H., Srinivasu, V.V. doi:10.1007/s10948-016-3845-z
Singh, J.S., Shimoyama, J., Yamamoto, A., Ogino, H., Kishio, K.: Supercond. Sci. Technol. 26, 065006 (2013)
Singh, S.J., Shimoyama, J., Yamamoto, A., Ogino, H., Kishio, K.: IEEE Trans. Appl. Supercond. 23, 7300605 (2013)
Deutscher, G., Muller, K.A.: Phys. Rev. Lett. 59, 1745 (1987)
Portis, A.M., Blazey, K.W., Muller, K.A., Bednorz, J.G.: Europhys. Lett. 5, 467–472 (1988)
Dulcic, A., Rakvin, B., Pozek, M.: Europhys. Lett. 10, 593–598 (1989)
Ji, L., Rzchowski, M.S., Tinkham, M.: Phys. Rev. B 42, 4838 (1990)
Silva, E., Giura, M., Marcon, R., Fastampa, R., Balestrino, G., Marinelli, M., Milani, E.: Phys. Rev. B 45, 12566 (1992)
Owens, F.J.: Phyica C 171, 25 (1990)
Weides, M., Kemmler, M., Kohlstedt, H., Waser, R., Koell, D., Kleiner, R., Goldobin, E.: PRL 97, 247001 (2006)
Acknowledgments
This work was supported by JSPS Grant-in-Aid for Scientific Research on Innovative Areas “Mixed anion” (Grant Number JP16H6439) and by Chair of Superconductivity Technology, University of South Africa.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Onyancha, R.B., Shimoyama, J., Das, J. et al. Non-Resonant Microwave Absorption in SmFeAsO 0.80 F 0.20: Line Shape and Structure Evolution with Temperature. J Supercond Nov Magn 30, 2429–2434 (2017). https://doi.org/10.1007/s10948-017-4074-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10948-017-4074-9