Order by singularity in Kitaev clusters

Srinivasan, Sarvesh; Khatua, Subhankar; Baskaran, G.; Ganesh, R.

doi:10.1103/physrevresearch.2.023212

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…We hope that the knowledge gathered through such investigations could lead to a new dimension of Kitaev physics, also extending such a topic to metallic systems. A recent work by Ma [26] extending Kitaev honeycomb model to a generalized higher spin (also see [23][24][25]) emphasizes the need to consider various other interactions. We therefore think that it is of interest to explore whether bond-dependent interactions arise leading to Kitaev-like physics within Ruderman-Kittel-Kasuya-Yosida interaction.…”

Section: Discussionmentioning

confidence: 99%

“…The disappearance of magnetic ordering features in bulk measurements like magnetic susceptibility (χ) and heat-capacity (C) at a critical field (H cr ) has been considered as a key indicator of Kitaev physics (see, for instance, [15]). It is also considered important to investigate magnetic materials beyond transition-metal systems as a function of H, which include rare-earths (R) [20][21][22] as well those with large spin [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic-field induced melting of long-range magnetic order akin to Kitaev insulators in the metallic compound Tb₅Si₃

Rayaprol

Iyer

Hoser

et al. 2023

J. Phys.: Condens. Matter

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There have been constant efforts to find ‘exotic’ quantum spin-liquid (QSL) materials. Some of the transition metal insulators dominated by the direction-dependent anisotropic exchange interaction (“Kitaev model” for honeycomb network of magnetic ions) are considered to be promising cases for the same. In such Kitaev insulators, QSL is achieved from the zero-field antiferromagnetic state by the application of magnetic field, suppressing other exchange interactions responsible for magnetic order. Here, we show that the features attributable to long-range magnetic ordering of the intermetallic compound, Tb5Si3, (TN = 69 K), containing honey-comb network of Tb ions, are completely suppressed by a critical applied field, Hcr, in heat-capacity and magnetization data, mimicking the behavior of Kitaev physics candidates. The neutron diffraction patterns as a function of H reveal that it is an incommensurate magnetic structure that gets suppressed, showing peaks arising from multiple wave vectors beyond Hcr. Increasing magnetic entropy as a function of H with a peak in the magnetically ordered state is in support of some kind of magnetic disorder in a narrow field range after Hcr. Such a high-field behavior for a metallic heavy rare-earth system to our knowledge has not been reported in the past and therefore is intriguing.

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