ANi5Bi5.6+δ (A = K, Rb, and Cs): Quasi-One-Dimensional Metals Featuring [Ni5Bi5.6+δ]- Double-Walled Column with Strong Diamagnetism

Ying Zhou; Long Chen; Yuxin Wang; Jinfeng Zhu; Zhongnan Guo; Chen Liu; Zhiying Guo; ChinWei Wang; Han Zhang; Yulong Wang; Ke Liao; Youting Song; Jia-Ou Wang; Dongliang Chen; Jie Ma; Jiangping Hu; Gang Wang

doi:10.1021/acs.inorgchem.2c03870

ANi₅Bi_5.6+δ (A = K, Rb, and Cs): Quasi-One-Dimensional Metals Featuring [Ni₅Bi_5.6+δ]^- Double-Walled Column with Strong Diamagnetism

Inorg Chem. 2023 Mar 6;62(9):3788-3798. doi: 10.1021/acs.inorgchem.2c03870. Epub 2023 Feb 22.

Authors

Ying Zhou^{1

2}, Long Chen^{1

2}, Yuxin Wang^{1

2}, Jinfeng Zhu³, Zhongnan Guo⁴, Chen Liu⁵, Zhiying Guo⁵, ChinWei Wang⁶, Han Zhang^{2

5}, Yulong Wang^{1

2}, Ke Liao^{1

2}, Youting Song¹, Jia-Ou Wang⁵, Dongliang Chen⁵, Jie Ma³, Jiangping Hu^{1

2

7}, Gang Wang^{1

2

7}

Affiliations

¹ Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
² University of Chinese Academy of Sciences, Beijing 100049, China.
³ Key Laboratory of Artificial Structures and Quantum Control, Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
⁴ Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
⁵ Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
⁶ Australian Nuclear Science and Technology Organization, Lucas Heights, NSW 2232, Australia.
⁷ Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China.

PMID: 36814133
DOI: 10.1021/acs.inorgchem.2c03870

Abstract

A new series of compounds, ANi₅Bi_5.6+δ (where A = K, Rb, and Cs) are discovered with a quasi-one-dimensional (Q1D) [Ni₅Bi_5.6+δ]^- double-walled column and a coaxial inner one-dimensional Bi atomic chain. The columns are linked to each other by intercolumn Bi-Bi bonds and separated by an A⁺ cation. Typical metallic behaviors with strong correlation of itinerant electrons and the Sommerfeld coefficient enhanced with the increasing cationic radius were experimentally observed and supported by first-principles calculations. Compared to AMn₆Bi₅ (where A = K, Rb, and Cs), the enhanced intercolumn distances and the substitution of Ni for Mn give rise to strong diamagnetic susceptibilities in ANi₅Bi_5.6+δ. First-principles calculations reveal possible uncharged Ni atoms with even number of electrons in ANi₅Bi_5.6+δ, which may explain the emergence of diamagnetism. ANi₅Bi_5.6+δ, as Q1D diamagnetic metals with strong electron correlation, provide a unique platform to understand exotic magnetism and explore novel quantum effects.