journal article·2024-01-25Open access

Nonlinear magnons and exchange Hamiltonians of the delafossite proximate quantum spin liquid candidates KYbSe2 and NaYbSe2

A. O. Scheie, Y. Kamiya, Hao Zhang, Sangyun Lee, A. J. Woods, M. O. Ajeesh, M. G. Gonzalez, B. Bernu, J. W. Villanova, J. Xing, Q. Huang, Qingming Zhang, Jie Ma, Eun Sang Choi, D. M. Pajerowski, Haidong Zhou, A. S. Sefat, S. Okamoto, T. Berlijn, L. Messio, R. Movshovich, C. D. Batista, D. A. Tennant

Physical Review B· Volume 109· Issue 1

Abstract

Quantum spin liquids were proposed over 50 years ago, but identifying experimental signatures is extremely difficult. Here, the authors study the Yb triangular materials KYbSe${}2$ and NaYbSe${}2$, and show that KYbSe${}2$ is well described by the Heisenberg ${J}2$-${J}1$ model. Comparing this material to NaYbSe${}2$ and CsYbSe${}2$, a trend emerges where the magnetic exchange interactions are correlated with chemical substitution. This allows these systems to be controllably tuned toward (and possibly into) a theoretically predicted quantum spin liquid phase.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced Condensed Matter Physics · Magnetic and transport properties of perovskites and related materials · Physics of Superconductivity and Magnetism

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

MPA-Q, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA

Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

School of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai 200240, China

Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA

Laboratoire de Physique Théorique de la Matière Condensée (LPTMC), Sorbonne Université, CNRS, F-75005 Paris, France

Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

School of Physical Science and Technology, Lanzhou University, Institute of Physics, Chinese Academy of Sciences, Lanzhou 730000, China

Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China

National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA

Institut Universitaire de France (IUF), F-75005 Paris, France

Shull Wollan Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

Funding

U.S. Department of Energy · Oak Ridge National Laboratory · Agence Nationale de la Recherche · National Science Foundation

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