| Title | Search for time-reversal symmetry breaking order at the (110) interface of YBa$_2$Cu$_3$O$_{7-δ$ using $\beta$NMR |
| Publication Type | Journal Article |
| Year of Publication | 2009 |
| Authors | Saadaoui, H, Morris, GD, Chow, KH, Hossain, MD, Levy, CDP, Parolin, TJ, Pearson, MR, Salman, Z, Smadella, M, Song, Q, Wang, D, Hentges, PJ, Greene, LH, Kiefl, RF, MacFarlane, WA |
| Journal | Physica B: Condensed Matter |
| Volume | 404 |
| Pagination | 724 - 726 |
| ISSN | 0921-4526 |
| Keywords | Time-reversal symmetry breaking |
| Abstract | In this paper, we report initial β \{NMR\} measurements seeking the spontaneous magnetic fields associated with a time-reversal symmetry breaking (TRSB) order at the (1 1 0) interface of the high temperature superconductor \{YBa\} 2 Cu 3 O 7 - δ (YBCO). A 2 keV beam of highly spin-polarized Li + 8 was implanted into a thin overlayer of silver sputtered onto an oriented \{YBCO\} film. The \{NMR\} of Li 8 in the Ag layer showed additional broadening with an onset below the superconducting transition temperature T c . This is evidence of spontaneous disordered magnetism which could be associated with \{TRSB\} order. |
| URL | http://www.sciencedirect.com/science/article/pii/S0921452608006534 |
| DOI | 10.1016/j.physb.2008.11.188 |
