{"paper":{"title":"Evolution of Anisotropic In-plane Resistivity with doping level in Ca$_{1-x}$Na$_x$Fe$_2$As$_2$ Single Crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"A. F. Wang, B. Lei, D. Y. Liu, F. Chen, J. J. Ying, J. Q. Ma, N. Zhu, P. Cheng, X. F. Lu, X. G. Luo, X. H. Chen","submitted_at":"2014-05-23T02:14:36Z","abstract_excerpt":"We measured the in-plane resistivity anisotropy in the underdoped Ca$_{1-x}$Na$_x$Fe$_2$As$_2$ single crystals. The anisotropy (indicated by $\\rho_{\\rm b} - \\rho_{\\rm a}$) appears below a temperature well above magnetic transition temperature $T_{\\rm N}$, being positive ($\\rho_{\\rm b} - \\rho_{\\rm a} > 0$) as $x\\leq$ 0.14. With increasing the doping level to $x$ = 0.19, an intersection between $\\rho_{\\rm b}$ and $\\rho_{\\rm a}$ is observed upon cooling, with $\\rho_{\\rm b} - \\rho_{\\rm a} < 0$ at low-temperature deep inside a magnetically ordered state, while $\\rho_{\\rm b} - \\rho_{\\rm a}> 0$ at hi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.6199","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}