A new paper is published on Physical Review B .
“ Emergent spin-1 Haldane gap and ferroelectricity in a frustrated spin-1/2 ladder ”
H. Ueda, S. Onoda, Y. Yamaguchi, T. Kimura, D. Yoshizawa, T. Morioka, M. Hagiwara, M. Hagihala, M. Soda, T. Masuda, T. Sakakibara, K. Tomiyasu, S. Ohira-Kawamura, K. Nakajima, R. Kajimoto, M. Nakamura, Y. Inamura, N. Reynolds, M. Frontzek, J. S. White, M. Hase, and Y. Yasui , Phys. Rev. B 101, 140408(R) (2020).