Exact Dimer Ground State and Quantized Magnetization Plateaus in the Two-Dimensional Spin System <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>SrCu</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mo>(</mo><mrow><msub><mrow><mi>BO</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow><mo>)</mo><mrow><msub><mrow><mi></mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span>

H. Kageyama; K. Yoshimura; R. Stern; N. V. Mushnikov; K. Onizuka; M. Kato; K. Kosuge; C. P. Slichter; T. Goto; Y. Ueda

doi:10.1103/PhysRevLett.82.3168

Exact Dimer Ground State and Quantized Magnetization Plateaus in the Two-Dimensional Spin System ${SrCu}_{2} ({BO}_{3})_{2}$

H. Kageyama, K. Yoshimura, R. Stern, N. V. Mushnikov, K. Onizuka, M. Kato, K. Kosuge, C. P. Slichter, T. Goto, and Y. Ueda

Phys. Rev. Lett. 82, 3168 – Published 12 April 1999

Abstract

Magnetic susceptibility, Cu NQR, and high-filed magnetization have been measured in polycrystalline $SrCu_{2} (BO_{3})_{2}$ having a two-dimensional (2D) orthogonal network of Cu dimers. This cuprate provides a new class of 2D spin-gap system $(Δ = 30 K)$ in which the ground state can be solved “exactly.” Furthermore, in the magnetization, two plateaus corresponding to $\frac{1}{4}$ and $\frac{1}{8}$ of the full Cu moment were first observed for 2D quantum spin systems.

Received 5 June 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.3168

Authors & Affiliations

H. Kageyama^1,2,*, K. Yoshimura^1,3,†, R. Stern³, N. V. Mushnikov², K. Onizuka², M. Kato¹, K. Kosuge¹, C. P. Slichter³, T. Goto², and Y. Ueda²

¹Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
²Institute for Solid State Physics, University of Tokyo, Roppongi, Minato-ku, Tokyo 106-8666, Japan
³Loomis Laboratory of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801-3080

^*Present address: Institute for Solid State Physics, University of Tokyo, Tokyo, Japan.
^†Permanent address: Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto, Japan.