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Alkali metal rare-earth chalcogenide $ARECh2$ (A=alkali or monovalent metal, RE=rare earth, Ch=O, S, Se, Te), is a large family of quantum spin liquid (QSL) candidates we discovered recently. Unlike $YbMgGaO4$, most members in the family…

Strongly Correlated Electrons · Physics 2021-05-26 Zheng Zhang , Jianshu Li , Weiwei Liu , Zhitao Zhang , Jianting Ji , Feng Jin , Rui Chen , Junfeng Wang , Xiaoqun Wang , Jie Ma , Qingming Zhang

Competing magnetic interactions, frustration driven quantum fluctuations, and spin correlations offer an ideal route for the experimental realization of emergent quantum phenomena and exotic quasi particle excitations in 3D frustrated…

Strongly Correlated Electrons · Physics 2024-07-09 J. Khatua , Suheon Lee , Gyungbin Ban , Marc Uhlarz , Kwang-Yong Choi , P. Khuntia

In this paper, we performed thermodynamic and electron spin resonance (ESR) measurements to study low-energy magnetic excitations, which were significantly affected by crystalline electric field (CEF) excitations due to relatively small…

Strongly Correlated Electrons · Physics 2021-08-24 Weiwei Liu , Zheng Zhang , Dayu Yan , Jianshu Li , Zhitao Zhang , Jianting Ji , Feng Jin , Youguo Shi , Qingming Zhang

Rare-earth chalcogenide compounds $\mathrm{ARECh_2}$ (A = alkali or monovalent metal, RE = rare earth, Ch = O, S, Se, Te) are a large family of quantum spin liquid (QSL) candidate materials. $\mathrm{NaYbS_2}$ is a representative member of…

Strongly Correlated Electrons · Physics 2024-09-25 Weizhen Zhuo , Zheng Zhang , Mingtai Xie , Anmin Zhang , Jianting Ji , Feng Jin , Qingming Zhang

In this paper we report the synthesis, magnetization and heat capacity of the frustrated magnets \emph{A}ErSe$_2$(\emph{A}=Na,K) which contain perfect triangular lattices of Er$^{3+}$. The magnetization data suggests no long-range magnetic…

Quantum magnets based on honeycomb lattices with low-coordination number offer a viable ground to realize exotic emergent quantum excitations and phenomena arising from the interplay between competing magnetic interactions, spin…

Strongly Correlated Electrons · Physics 2024-11-14 J. Khatua , M. Gomilsek , Kwang-Yong Choi , P. Khuntia

Frustration, spin correlations and interplay between competing degrees of freedom are some of the key ingredients that underlie exotic states with fractional excitations in quantum materials. Rare-earth based two dimensional magnetic…

Strongly Correlated Electrons · Physics 2022-09-13 J. Khatua , M. Pregelj , A. Elghandour , Z. Jaglicic , R. Klingeler , A. Zorko , P. Khuntia

Rare earth triangular lattice materials have been proposed as a good platform for the investigation of frustrated magnetic ground states. KErSe$_2$ with the delafossite structure, contains perfect two-dimensional Er$^{3+}$ triangular layers…

Transition metal telluride compositions are explored extensively for their unique magnetic behavior. Since chromium telluride (Cr2Te3) exhibits a near-room-temperature phase transition, the material can be effectively used in applications…

A triangular lattice selenide series of rare earth (RE), CsRESe2, were synthesized as large single crystals using a flux growth method. This series stabilized in either trigonal (R-3m) or hexagonal (P63/mmc) crystal systems. Physical…

We report the properties of a triangular lattice iron-chalcogenide antiferromagnet FeAl$_{2}$Se$_{4}$. The spin susceptibility reveals a significant antiferromagnetic interaction with a Curie-Weiss temperature {\Theta}$_{CW}$ ~ -200K and a…

Strongly Correlated Electrons · Physics 2019-02-27 Kunkun Li , Shifeng Jin , Jiangang Guo , Yanping Xu , Yixi Su , Erxi Feng , Yu Liu , Shengqiang Zhou , Tianping Ying , Shiyan Li , Ziqiang Wang , Gang Chen , Xiaolong Chen

The spin-$1/2$ Heisenberg antiferromagnet on the square-kagome (SK) lattice has attracted growing attention as a model system of highly frustrated quantum magnetism. A further motivation for theoretical studies comes from the recent…

Strongly Correlated Electrons · Physics 2023-06-22 Johannes Richter , Jürgen Schnack

Frustration-induced strong quantum fluctuations accompanied by spin-orbit coupling and crystal electric field can give rise to rich and diverse magnetic phenomena associated with unconventional low-energy excitations in rare-earth based…

Strongly Correlated Electrons · Physics 2024-02-13 J. Khatua , S. Bhattacharya , A. M. Strydom , A. Zorko , J. S. Lord , A. Ozarowski , E. Kermarrec , P. Khuntia

We performed high-field magnetization, magnetocaloric effect (MCE), and NMR measurements on the Ising triangular-lattice antiferromagnet Rb$_2$Co(SeO$_3$)$_2$. The observations of the 1/3-magnetization plateau, the split NMR lines, and the…

We present microscopic magnetic properties of a two dimensional triangular lattice Sc2Ga2CuO7, consisting of single and double triangular Cu planes. A Curie-Weiss temperature theta_CW = --44 K and an antiferromagnetic (AFM) exchange…

Strongly Correlated Electrons · Physics 2017-12-06 P. Khuntia , R. Kumar , A. V. Mahajan , M. Baenitz , Y. Furukawa

Trillium lattices, where magnetic ions form a three-dimensional chiral network of corner-sharing equilateral triangular motifs, offer a prominent platform to explore exotic quantum states. In this work, we report ground-state properties of…

We present a novel finite-temperature second-order perturbation method incorporating spin-orbit coupling to investigate the temperature-dependent site-resolved contributions to the magnetocrystalline anisotropy energy (MAE), specifically…

Materials Science · Physics 2023-08-23 Shogo Yamashita , Akimasa Sakuma

A quantum spin liquid (QSL) is a state of matter characterized by fractionalized quasiparticle excitations, quantum entanglement, and a lack of long-range magnetic order. However, QSLs have evaded definitive experimental observation.…

Strongly Correlated Electrons · Physics 2024-12-31 Sangyun Lee , Andrew J. Woods , Minseong Lee , Shengzhi Zhang , Eun Sang Choi , A. O. Scheie , D. A. Tennant , J. Xing , A. S. Sefat , R. Movshovich

The recent synthesis of the chromium selenide compound LiCrSe$_2$ constitutes a valuable addition to the ensemble of two-dimensional triangular lattice antiferromagnets (2D-TLA). In this work we present the very first comprehensive study of…

The manganese tellurate Li2MnTeO6 consists of trigonal spin lattices made up of Mn4+ (d3, S = 3/2) ions. The magnetic properties of this compound were characterized by several experimental techniques, which include magnetic susceptibility,…

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