Quantum spin liquid state in three dimensional metal-organic frameworks

POSTER

Abstract

Quantum spin liquid (QSL) is a massive superposition state of spins, or highly entangled quantum matter in which electrons’ spins fluctuate and remain liquid-like, even at absolute zero temperature. Thus, they preserve spin-rotational symmetry but inhibit long range magnetic-ordering [1]. This novel state of matter attracted much attention in recent years due to the possibility of hosting fractionalized excitations, artificial gauge fields and exotic forms of superconductivity [2]. Here we attempt to uncover the QSL character of the hyperhoneycomb metal-organic framework (MOF) of [(C2H5)3NH]2Cu2(C2O4)3. We reveal the absence of magnetic transition in high magnetic fields up to 35T and magnetic anisotropy via torque magnetometry. Further, we will discuss the exotic nature of the spin liquid ground state and unusual excitations evidenced by the thermodynamic studies performed on candidate QSL [(C2H5)3NH]2Cu2(C2O4)3 down to 1.8K.
[1] T.Imai et al.,Physics Today 69, 8, 30 (2016).
[2] L.Balents et al.,Nature,464,199-208 (2010).

Presenters

  • Charuni Dissanayake

    • Physics, University of Central Florida
    • University of Central Florida

Authors

  • Charuni Dissanayake

    • Physics, University of Central Florida
    • University of Central Florida

  • K A M Hasan Siddiquee

    • Physics, University of Central Florida
    • University of Central Florida

  • RIFFAT MUNIR

    • Physics, University of Central Florida
    • University of Central Florida

  • Wesley Newsome

    • Chemistry, University of Central Florida

  • Fernando Uribe-Romo

    • Chemistry, University of Central Florida

  • Xinzhe Hu

    • Physics, University of Florida
    • University of Florida

  • Swapnil Yadav

    • University of Florida
    • Physics, University of Florida

  • Yasumasa Takano

    • Physics, University of Florida
    • University of Florida

  • Eun Sang Choi

    • Department of Physics, National High Magnetic Field Laboratory, Florida State University, Florida, USA
    • National High Field Magnet Laboratory
    • National High Magnetic Field Laboratory
    • Florida State University
    • National High Magnetic Field Laboratory, Florida State University
    • National High Magnetic Field Lab

  • Yasuyuki Nakajima

    • Physics, University of Central Florida
    • University of Central Florida