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Author (up) Lee, S.-C.; Sullivan, M.; Ruchti, G.R.; Anlage, S.M.; Palmer, B.S.; Maiorov, B.; Osquiguil, E. url  openurl
  Title Doping-dependent nonlinear Meissner effect and spontaneous currents in high-Tc superconductors Type Journal Article
  Year 2005 Publication Physical Review B – Condensed Matter and Materials Physics Abbreviated Journal Phys. Rev. B Condens. Matter Mater. Phys.  
  Volume 71 Issue 1 Pages  
  Keywords article; electric current; film; magnetic field; magnetism; microwave radiation; nonlinear system; parameter; superconductor; temperature dependence  
  Abstract We measure the local harmonic generation from superconducting thin films at microwave frequencies to investigate the intrinsic nonlinear Meissner effect near Tc in the zero magnetic field. Both second and third harmonic generation are measured to identify time-reversal symmetry breaking (TRSB) and time-reversal symmetric (TRS) nonlinearities. We perform a systematic doping-dependent study of the nonlinear response and find that the TRS characteristic nonlinearity current density scale follows the doping dependence of the depairing critical current density. We also extract a spontaneous TRSB characteristic current density scale that onsets at Tc, grows with decreasing temperature, and systematically decreases in magnitude (at fixed T/TC) with underdoping. The origin of this current scale could be Josephson circulating currents or the spontaneous magnetization associated with a TRSB order parameter.  
  Address Superconductivity Technology Center, Mail Stop K763, Los Alamos National Laboratory, Los Alamos, NM 87545, United States  
  Corporate Author Thesis  
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  Language Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 10980121 (ISSN) ISBN Medium  
  Area Expedition Conference  
  Notes Cited By (since 1996): 4; Export Date: 17 April 2009; Source: Scopus; CODEN: PRBMD; doi: 10.1103/PhysRevB.71.014507; Language of Original Document: English; Correspondence Address: Lee, S.-C.; Ctr. for Superconductivity Research; Department of Physics; University of Maryland College Park, MD 20742-4111, United States; References: Yip, S.K., Sauls, J.A., (1992) Phys. Rev. Lett., 69, p. 2264; Xu, D., Yip, S.K., Sauls, J.A., (1995) Phys. Rev. B, 51, p. 16233; Gittleman, J., Rosenblum, B., Seidel, T.E., Wicklund, A.W., (1965) Phys. Rev., 137, pp. A527; Buan, J., Stojkovic, B.P., Israeloff, N.E., Goldman, A.M., Huang, C.C., Valls, O.T., Liu, J.Z., Shelton, R., (1994) Phys. Rev. Lett., 72, p. 2632; Maeda, A., Iino, Y., Hanaguri, T., Motohira, N., Kishio, K., Fukase, T., (1995) Phys. Rev. Lett., 74, p. 1202; Carrington, A., Giannetta, R.W., Kim, J.T., Giapintzakis, J., (1999) Phys. Rev. B, 59, pp. R14 173; Bidinosti, C.P., Hardy, W.N., Bonn, D.A., Liang, R., (1999) Phys. Rev. Lett., 83, p. 3277; Benz, G., W Approved no  
  Call Number BT @ osquigui @ Serial 365  
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