Publications

“Almost pure J_eff = 1/2 Mott state of In₂Ir₂O₇ in the limit of reduced inter-site hopping” A. Krajewska, T. Takayama, R. Dinnebier, A. Yaresko, K. Ishii, M. Isobe and H. Takagi. Preprint at https://arxiv.org/abs/1808.06208.

“Ordering of hidden multipoles in spin-orbit entangled 5d¹ Ta chlorides” H. Ishikawa, T. Takayama, R. K. Kremer, J. Nuss, R. Dinnebier, K. Kitagawa, K. Ishii, and H. Takagi, Phys. Rev. B 100, 045142 (2019).

“Giant magnetoelastic-coupling driven by spin-lattice liquid state in molybdate pyrochlores” A. Smerald and G. Jackeli, Phys. Rev. Lett. 122, 227202 (2019).

“Crystal structure and stacking faults in the layered honeycomb, delafossite-type materials Ag₃LiIr₂O₆ and Ag₃LiRu₂O₆” S. Bette, T. Takayama, V. Duppel, A. Poulain, H. Takagi, R. E. Dinnebier, Dalton Trans. 48, 9250-9259 (2019).

“Concept and realization of Kitaev quantum spin liquids” H. Takagi, T. Takayama, G. Jackeli, G. Khaliullin, S. E. Nagler, Nature Reviews Physics 1, 264–280 (2019)

“Long-range magnetic ordering in rocksalt-type high-entropy oxides” M. P. Jimenez-Segura, T. Takayama, D. Berardan, M. Reehuis, A. Hoser, H. Takagi, and N. Dragoe, Appl. Phys. Lett. 114, 122401 (2019).

“Pressure-induced collapse of the spin-orbital Mott state in the hyperhoneycomb iridate β−Li₂IrO₃” T. Takayama, A. Krajewska, A. S. Gibbs, A. N. Yaresko, H. Ishii, H. Yamaoka, K. Ishii, N. Hiraoka, N. P. Funnell, C. L. Bull, and H. Takagi, Phys. Rev. B 99, 125127 (2019).

“Monoclinic SrIrO₃: a Dirac semimetal produced by non-symmorphic symmetry and spin-orbit coupling” T. Takayama, A. N. Yaresko, and H. Takagi, J. Phys.: Condens. Matter. 31, 074001 (2019).

“Emergent SU(4) symmetry in α-ZrCl₃ and crystalline spin-orbital liquids” M. G. Yamada, M. Oshikawa, and G. Jackeli, Phys. Rev. Lett. 121, 097201 (2018).

“A spin-orbital-entangled quantum liquid on a honeycomb lattice” K. Kitagawa, T. Takayama, Y. Matsumoto, A. Kato, R. Takano, Y. Kishimoto, S. Bette, R. Dinnebier, G. Jackeli and H. Takagi, Nature 554, 341 (2018).

“Spin-orbit dimes and noncollinear phases in d¹ cubic double perovskites” J. Romhányi, L. Balents and G. Jackeli, Phys. Rev. Lett. 118, 217202 (2017).

“Solution of the heavily stacking faulted crystal structure of the honeycomb iridate H₃LiIr₂O₆” S. Bette, T. Takayama, K. Kitagawa, R. Takano, H. Takagi and R. E. Dinnebier, Dalton Trans. 46, 15216-15227 (2017).

“Zero-gap semiconductor to excitonic insulator transition in Ta₂NiSe₅” Y. F. Lu, H. Kono, T. I. Larkin, A. W. Rost, T. Takayama, A. V. Boris, B. Keimer and H. Takagi, Nat. Commun. 8, 14408 (2017).

“Model analysis of magnetic susceptibility of Sr₂IrO₄: A two-dimensional J_eff = 1/2 Heisenberg system with competing interlayer couplings” T. Takayama, A. Matsumoto, G. Jackeli, and H. Takagi, Phys. Rev. B 94, 224420 (2016).

“Hyperhoneycomb iridate β-Li₂IrO₃ as a platform for Kitaev magnetism” T. Takayama, A. Kato, R. Dinnebier, J. Nuss, H. Kono, L.S.I. Veiga, G. Fabbris, D. Haskel, and H. Takagi, Phys. Rev. Lett. 114, 077202 (2015).

“Spin-orbit coupling induced semi-metallic state in the 1/3 hole- doped hyper-kagome Na₃Ir₃O₈” T. Takayama, A. Yaresko, A. Matsumoto, J. Nuss, K. Ishii, M. Yoshida, J. Mizuki, and H. Takagi, Sci. Rep. 4, 6818 (2014).