T-c enhancement by aliovalent anionic substitution in superconducting BaTi2(Sb1-xSnx)2O

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dc.contributor.authorNakano, Ken_AU
dc.contributor.authorYajima, Ten_AU
dc.contributor.authorTakeiri, Fen_AU
dc.contributor.authorGreen, MAen_AU
dc.contributor.authorHester, JRen_AU
dc.contributor.authorKobayashi, Yen_AU
dc.contributor.authorKageyama, Hen_AU
dc.date.accessioned2013-11-06T03:50:58Zen_AU
dc.date.available2013-11-06T03:50:58Zen_AU
dc.date.issued2013-07-01en_AU
dc.date.statistics2013-11-06en_AU
dc.description.abstractBaTi2Sb2O is a T-c = 1.2 K superconductor with a d(1) square lattice, and isovalent Bi substitution for Sb can increase its T-c to 4.6 K (BaTi2Bi2O), accompanied by the complete suppression of charge density wave (CDW) or spin density wave (SDW) transition. In the present study, we demonstrate that aliovalent Sn substitution (hole doping) also increases T-c up to 2.5 K for BaTi2(Sb0.7Sn0.3)(2)O, while suppressing CDW/SDW transition only slightly. The overall electronic phase diagram of BaTi2(Sb, Sn)(2)O is qualitatively similar to that of cation-substituted (hole-doped) (Ba,Na)Ti2Sb2O, but quantitative differences such as in T-c are observed, which is discussed in terms of Ti-Pn hybridization and chemical disorder. © 2013, Physical Society of Japanen_AU
dc.identifier.articlenumber074707en_AU
dc.identifier.citationNakano, K.,Yajima, T., Takeiri, F., Green, M. A., Hester, J., Kobayashi, Y., & Kageyama, H. (2013). T-c enhancement by aliovalent anionic substitution in superconducting BaTi2(Sb1-xSnx)2O. Journal of Physical Society of Japan, 82 (7), 074707. doi:10.7566/JPSJ.82.074707en_AU
dc.identifier.govdoc5046en_AU
dc.identifier.issn0031-9015en_AU
dc.identifier.issue7en_AU
dc.identifier.journaltitleJournal of Physical Society of Japanen_AU
dc.identifier.pagination5en_AU
dc.identifier.urihttp://dx.doi.org/10.7566/JPSJ.82.074707en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4886en_AU
dc.identifier.volume82en_AU
dc.language.isoenen_AU
dc.publisherPhysical Society Japanen_AU
dc.subjectBariumen_AU
dc.subjectThalliumen_AU
dc.subjectSuperconductivityen_AU
dc.subjectInstabilityen_AU
dc.subjectAntimonyen_AU
dc.subjectTinen_AU
dc.titleT-c enhancement by aliovalent anionic substitution in superconducting BaTi2(Sb1-xSnx)2Oen_AU
dc.typeJournal Articleen_AU
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