Exploring metastability via the third harmonic measurements in single crystals of $2H$-$NbS{e}_2$ showing anomalous Peak effect

Abstract

We explore the metastability effects across the order-disorder transition pertaining to the peak effect phenomenonon in critical current density ($J_c$) via the first and the third harmonic ac susceptibility measurements in the weakly pinned single crystals of $2H$-$NbS{e}_2$. An analysis of our data suggests that an imprint of the limiting (spinodal) temperature above which $J_c$ is path independent can be conveniently located in the third harmonic data (${\chi }_{3\omega }^{\prime }$).

Accepted for publication in Phys. Rev. B

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• Dynamic instabilities and memory effects in vortex matter
• Peak effect, vortex-lattice melting-line and order - disorder transition in conventional and high-T superconductors
• Weak- to strong pinning crossover
• Anomalous Peak Effect in CeRu2 and NbSe2 : Fracturing of a Flux Line Lattice?
• Muon-Spin Rotation Measurements of the Magnetic Field Dependence of the Vortex-Core Radius and Magnetic Penetration Depth in NbSe2
• STM Imaging of Flux Line Arrangements in the Peak Effect Regime
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• Melting of the vortex lattice in high $T_c$ superconductors
• Stable and Metastable vortex states and the first order transition across the peak effect region in weakly pinned 2H-NbSe_2

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• Thermal fluctuations and vortex melting in the classical superconductor Nb3Sn from high-resolution specific-heat measurements
• Driven Disordered Polymorphic Solids: Phases and Phase Transitions, Dynamical Coexistence and Peak Effect Anomalies
• Flux jumps, Second Magnetization Peak anomaly and the Peak Effect phenomenon in single crystals of $YN{i}_2{B}_{2}C$ and $LuN{i}_2{B}_{2}C$
• Evolution in the split-peak structure across the Peak Effect region in single crystals of $2H$-NbSe${}_2$
• Dual role of an ac driving force and the underlying two distinct order-disorder transitions in the vortex phase diagram of Ca3Ir4Sn13
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• Anisotropy in vortex phase diagram and the pinning force density in the basal plane of YNi_2B_2C
• Pulverization of the flux line lattice, the phase coexistence and the spinodal temperature of the order-disorder transition in a weakly pinned crystal of Yb${}_3$Rh${}_4$Sn${}_{13}$
• Critical points in the Bragg glass phase of a weakly pinned crystal of Ca${}_3$Rh${}_4$Sn${}_{13}$
• Magnetic field induced enlargement of the regime of critical fluctuations in the classical superconductor V3Si from high-resolution specific heat experiments
• Nonpertubative Many-Body Theory for the Two-Dimensional Hubbard Model at Low Temperature: From Weak to Strong Coupling Regimes