Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet
Issued Date
2024-03-01
Resource Type
ISSN
24699950
eISSN
24699969
Scopus ID
2-s2.0-85188426934
Journal Title
Physical Review B
Volume
109
Issue
10
Rights Holder(s)
SCOPUS
Bibliographic Citation
Physical Review B Vol.109 No.10 (2024)
Suggested Citation
Piyakulworawat C., Thennakoon A., Yang J., Yoshizawa H., Ueta D., Sato T.J., Sheng K., Chen W.T., Pai W.W., Matan K., Lee S.H. Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet. Physical Review B Vol.109 No.10 (2024). doi:10.1103/PhysRevB.109.104420 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/97788
Title
Zero-point entropies of spin-jam and spin-glass states in a frustrated magnet
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Abstract
Thermodynamics studies of a prototypical quasi-two-dimensional frustrated magnet, Ba2Sn2ZnCr7pGa10-7pO22, where the magnetic Cr3+ ions are arranged in a triangular network of bipyramids show that the magnetic zero-point entropy for p=0.98 is 55(1)% of the entropy expected when the Cr3+ moments are fully disordered. Furthermore, when combined with a previous neutron scattering study and the perimeter scaling entropy of a spin jam, the analysis reveals that with decreasing p, i.e., doping of the nonmagnetic Ga3+ ions, the variation in the magnetic zero-point entropy can be well explained by the combined effects of the zero-point entropy of the spin jam state and that of weakly coupled orphan spins, shedding light on the coexistence of the two types of spin states in quantum magnetism.