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Emergent bound states and impurity pairs in chemically doped Shastry-Sutherland system

Author

Listed:
  • Zhenzhong Shi

    (Duke University)

  • William Steinhardt

    (Duke University)

  • David Graf

    (Florida State University)

  • Philippe Corboz

    (University of Amsterdam)

  • Franziska Weickert

    (Florida State University)

  • Neil Harrison

    (National High Magnetic Field Laboratory, Los Alamos National Laboratory)

  • Marcelo Jaime

    (National High Magnetic Field Laboratory, Los Alamos National Laboratory)

  • Casey Marjerrison

    (Duke University)

  • Hanna A. Dabkowska

    (McMaster University, Hamilton)

  • Frédéric Mila

    (Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL))

  • Sara Haravifard

    (Duke University
    Duke University)

Abstract

Impurities often play a defining role in the ground states of frustrated quantum magnets. Studies of their effects are crucial in understanding of the phase diagram in these materials. SrCu2(BO3)2, an experimental realization of the Shastry-Sutherland (SS) lattice, provides a unique model system for such studies using both experimental and numerical approaches. Here we report effects of impurities on the crystals of bound states, and doping-induced emergent ground states in Mg-doped SrCu2(BO3)2, which remain stable in high magnetic fields. Using four complementary magnetometry techniques and theoretical simulations, a rich impurity-induced phenomenology at high fields is discovered. The results demonstrate a rare example in which even a small doping concentration interacts strongly with both triplets and bound states of triplets, and thus plays a significant role in the magnetization process even at high magnetic fields. Our findings provide insights into the study of impurity effects in geometrically frustrated quantum magnets.

Suggested Citation

  • Zhenzhong Shi & William Steinhardt & David Graf & Philippe Corboz & Franziska Weickert & Neil Harrison & Marcelo Jaime & Casey Marjerrison & Hanna A. Dabkowska & Frédéric Mila & Sara Haravifard, 2019. "Emergent bound states and impurity pairs in chemically doped Shastry-Sutherland system," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10410-x
    DOI: 10.1038/s41467-019-10410-x
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    Cited by:

    1. Kirill Yu. Povarov & David E. Graf & Andreas Hauspurg & Sergei Zherlitsyn & Joachim Wosnitza & Takahiro Sakurai & Hitoshi Ohta & Shojiro Kimura & Hiroyuki Nojiri & V. Ovidiu Garlea & Andrey Zheludev &, 2024. "Pressure-tuned quantum criticality in the large-D antiferromagnet DTN," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Zhenzhong Shi & Sachith Dissanayake & Philippe Corboz & William Steinhardt & David Graf & D. M. Silevitch & Hanna A. Dabkowska & T. F. Rosenbaum & Frédéric Mila & Sara Haravifard, 2022. "Discovery of quantum phases in the Shastry-Sutherland compound SrCu2(BO3)2 under extreme conditions of field and pressure," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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