TY - JOUR
T1 - Superconductivity in BaTi 2Sb 2O with a d 1 square lattice
AU - Yajima, Takeshi
AU - Nakano, Kousuke
AU - Takeiri, Fumitaka
AU - Ono, Toshio
AU - Hosokoshi, Yuko
AU - Matsushita, Yoshitaka
AU - Hester, James
AU - Kobayashi, Yoji
AU - Kageyama, Hiroshi
N1 - Generated from Scopus record by KAUST IRTS on 2022-09-13
PY - 2012/10/1
Y1 - 2012/10/1
N2 - We prepared a new two-dimensional oxyantimonide, BaTi 2Sb 2O, which shows a superconducting transition at 1.2 K, representing the first superconductivity in a system with Ti 3+ (d 1) in a square lattice. The TiO2Sb4 mixed anionic coordination stabilizes a unique half-filled Ti d xy orbital configuration in Ti 2O plane, which is analogous to Cu 2+ (d 9) in the high-T c superconductors. A charge density wave (CDW)- or spin density wave (SDW)-like anomaly appears at 50 K, which is significantly reduced compared with 200K for the isostructural and non-superconducting BaTi 2As 2O. © 2012 The Physical Society of Japan.
AB - We prepared a new two-dimensional oxyantimonide, BaTi 2Sb 2O, which shows a superconducting transition at 1.2 K, representing the first superconductivity in a system with Ti 3+ (d 1) in a square lattice. The TiO2Sb4 mixed anionic coordination stabilizes a unique half-filled Ti d xy orbital configuration in Ti 2O plane, which is analogous to Cu 2+ (d 9) in the high-T c superconductors. A charge density wave (CDW)- or spin density wave (SDW)-like anomaly appears at 50 K, which is significantly reduced compared with 200K for the isostructural and non-superconducting BaTi 2As 2O. © 2012 The Physical Society of Japan.
UR - http://journals.jps.jp/doi/10.1143/JPSJ.81.103706
UR - http://www.scopus.com/inward/record.url?scp=84867170289&partnerID=8YFLogxK
U2 - 10.1143/JPSJ.81.103706
DO - 10.1143/JPSJ.81.103706
M3 - Article
SN - 0031-9015
VL - 81
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 10
ER -