Pressure-induced tuning of quantum spin liquid state in 
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Malavi, Pallavi; Pal, Srishti; Muthu, D. V. S.; Sahoo, Subodha; Karmakar, S.; Sood, Anil K.

doi:10.1103/physrevb.101.214402

Cited by 8 publications

(6 citation statements)

References 35 publications

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“…Such effects may be achieved by applying either high temperature or external high pressure. 16,27,47…”

Section: Resultsmentioning

confidence: 99%

“…At a relatively higher pressure of 8 GPa, a second-order structural transition in herbertsmithite has been reported to occur. 27 It was found that the pressure-induced distortion of the kagome lattice and reduction of spin frustration result in a weak magnetic ordering state in the system. Additionally, very little effort has been focused so far on studying kagome staircase vanadates under high pressures.…”

Section: Introductionmentioning

confidence: 99%

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Structural phase transformation of quantum spin liquid herbertsmithite via pressure induced enhancement of the cooperative Jahn–Teller effect and antisite disorder

Luo,

Zhang,

et al. 2023

Phys. Chem. Chem. Phys.

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“…Such effects may be achieved by applying either high temperature or external high pressure. 16,27,47…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural phase transformation of quantum spin liquid herbertsmithite via pressure induced enhancement of the cooperative Jahn–Teller effect and antisite disorder

Luo,

Zhang,

et al. 2023

Phys. Chem. Chem. Phys.

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“…As reported earlier, the kagome lattice quantum spin frustration material herbertsmithite also exhibited nonlocal cooperative Jahn−Teller distortion under high pressure. 35 It may be speculated that high pressure may facilitate interlayer mutual substitution of the magnetic atoms (Mn or Cu) in the kagome lattice and nonmagnetic atoms (Mg or Zn) in the triangular interlayers, enhance the nonlocal cooperative Jahn− Teller distortion, and eventually lead to structural phase transition. The corruption of the kagome lattice under high pressure poses limitations for further investigations on the kagome lattice quantum spin frustrated materials.…”

Section: Synthesis Of Mgmn 3 (Oh)mentioning

confidence: 99%

High-Pressure Induced Continuous Structural Evolution of Kagome Antiferromagnet MgMn₃(OH)₆Cl₂: A Structural Analogue to Quantum Spin Liquid Herbertsmithite

Yang,

Xu,

Zhang

et al. 2024

Inorg. Chem.

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MgMn3(OH)6Cl2 serves readily as the classical Heisenberg kagome antiferromagnet lattice spin frustration material, due to its similarity to herbertsmithite in composition and crystal structure. In this work, nanosheets of MgMn3(OH)6Cl2 are synthesized through a solid-phase reaction. Low-temperature magnetic measurements revealed two antiferromagnetic transitions, occurring at ∼8 and 55 K, respectively. Utilizing high-pressure synchrotron radiation X-ray diffraction techniques, the topological structural evolution of MgMn3(OH)6Cl2 under pressures up to 24.8 GPa was investigated. The sample undergoes a second-order structural phase transition from the rhombohedral phase to the monoclinic phase at pressures exceeding 7.8 GPa. Accompanying the disappearance of the Fano-like line shape in the high-pressure Raman spectra were the emergence of new Raman active modes and discontinuities in the variations of Raman shifts in the high-frequency region. The phase transition to a structure with lower symmetry was attributed to the pressure-induced enhancement of cooperative Jahn–Teller distortion, which is caused by the mutual substitution of Mn2+ ions from the kagome layer and Mg2+ ions from the triangular interlayer. High-pressure ultraviolet–visible absorption measurements support the structural evolution. This research provides a robust experimental approach and physical insights for further exploration of classical geometrical frustration materials with kagome lattice.

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“…The CW behavior indicates dominant AFM interaction ( CW = −115 K and μ eff = 1.63 μ B ), while the Curie term due to defect spins becomes prominent below ∼20 K. Considering that the defect spins in Cu 2 IrO 3 are due to presence of mixed valent Cu + /Cu 2+ in the honeycomb layer (and consequently affecting a neighboring Ir atom valency and its spin configuration), it is believed that these spins may not be free (unlike the interlayer noninteracting spins in Herbertsmithite resulting from antisite disorder [62]). Low temperature χ (T ) was thus shown previously to follow a sub-Curie fit (χ = C imp T α , α = 0.26), that was explained by bond-disordered QSL state (by the formation of random spin-singlets) as a result of the above quenched disorder [37].…”

Section: Magnetic Susceptibilitymentioning

confidence: 99%

Pressure tuning of structure, magnetic frustration, and carrier conduction in the Kitaev spin liquid candidate Cu2IrO3

Pal

Malavi²,

Sinha³

et al. 2023

Phys. Rev. B

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The layered honeycomb lattice iridate Cu 2 IrO 3 is the closest realization of the Kitaev quantum spin liquid, primarily due to the enhanced interlayer separation and nearly ideal honeycomb lattice. We report pressureinduced structural evolution of Cu 2 IrO 3 by powder x-ray diffraction (PXRD) up to ∼17 GPa and Raman scattering measurements up to ∼25 GPa. A structural phase transition (monoclinic C2/c → triclinic P 1) is observed with a broad mixed phase pressure range (∼4 to 15 GPa). The triclinic phase consists of heavily distorted honeycomb lattice with Ir-Ir dimer formation and a collapsed interlayer separation. In the stability range of the low-pressure monoclinic phase, structural evolution maintains the Kitaev configuration up to 4 GPa. This is supported by the observed enhanced magnetic frustration in dc susceptibility without emergence of any magnetic ordering and an enhanced dynamic Raman susceptibility. High-pressure resistance measurements up to 25 GPa in the temperature range 1.4-300 K show resilient nonmetallic R(T ) behavior with significantly reduced resistivity in the high-pressure phase. The Mott 3D variable-range-hopping conduction with much reduced characteristic energy scale T 0 suggests that the high-pressure phase is at the boundary of localized-itinerant crossover. First-principles density functional theoretical (DFT) analysis shows that monoclinic P2 1 /c phase of Cu 2 IrO 3 is energetically lower than its C2/c phase at ambient pressure and both the structures are consistent with experimental XRD pattern. Our analysis reveals structural transition from P2 1 /c to P 1 structure at 7 GPa in agreement with experiment and uncovers the interplay between oxidation states, spin, Ir bond dimerization and their relevance to electronic band gap.

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Pressure-induced tuning of quantum spin liquid state in ZnCu3(OH)6Cl2

Cited by 8 publications

References 35 publications

Structural phase transformation of quantum spin liquid herbertsmithite via pressure induced enhancement of the cooperative Jahn–Teller effect and antisite disorder

Structural phase transformation of quantum spin liquid herbertsmithite via pressure induced enhancement of the cooperative Jahn–Teller effect and antisite disorder

High-Pressure Induced Continuous Structural Evolution of Kagome Antiferromagnet MgMn₃(OH)₆Cl₂: A Structural Analogue to Quantum Spin Liquid Herbertsmithite

Pressure tuning of structure, magnetic frustration, and carrier conduction in the Kitaev spin liquid candidate Cu2IrO3

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Pressure-induced tuning of quantum spin liquid state in ZnCu3(OH)6Cl2

Cited by 8 publications

References 35 publications

Structural phase transformation of quantum spin liquid herbertsmithite via pressure induced enhancement of the cooperative Jahn–Teller effect and antisite disorder

Structural phase transformation of quantum spin liquid herbertsmithite via pressure induced enhancement of the cooperative Jahn–Teller effect and antisite disorder

High-Pressure Induced Continuous Structural Evolution of Kagome Antiferromagnet MgMn3(OH)6Cl2: A Structural Analogue to Quantum Spin Liquid Herbertsmithite

Pressure tuning of structure, magnetic frustration, and carrier conduction in the Kitaev spin liquid candidate Cu2IrO3

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High-Pressure Induced Continuous Structural Evolution of Kagome Antiferromagnet MgMn₃(OH)₆Cl₂: A Structural Analogue to Quantum Spin Liquid Herbertsmithite