Thermal Properties of Rung Disordered Two-leg Quantum Spin Ladders: Quantum Monte Carlo Study

Abstract

A two-leg quenched random bond disordered antiferromagnetic spin$-1/2$ Heisenberg ladder system is investigated by means of stochastic series expansion (SSE) quantum Monte Carlo (QMC) method. Thermal properties of the uniform and staggered susceptibilities, the structure factor, the specific heat and the spin gap are calculated over a large number of random realizations in a wide range of disorder strength. According to our QMC simulation results, the considered system has a special temperature point at which the specific heat take the same value regardless of the strength of the disorder. Moreover, the uniform susceptibility is shown to display the same character except for a small difference in the location of the special point. Finally, the spin gap values are found to decrease with increasing disorder parameter and the smallest gap value found in this study is well above the weak coupling limit of the clean case.

arXiv comment15 pages, 9 figures

References in corpus (50)

• Surprises on the Way from 1D to 2D Quantum Magnets: the Novel Ladder Materials
• Stochastic series expansion method with operator-loop update
• Computational Studies of Quantum Spin Systems
• Finite-Size Scaling of the Ground State Parameters of the Two-Dimensional Heisenberg Model
• Strong disorder RG approach of random systems
• Coupled Ladders in a Magnetic Field
• Critical Properties of gapped spin-1/2 chains and ladders in a magnetic field
• Thermodynamics of the Spin Luttinger-Liquid in a Model Ladder Material
• A Monte Carlo Study of Correlations in Quantum Spin Ladders
• Equivalence of the antiferromagnetic Heisenberg ladder to a single $S=1$ chain
• Characteristic Crossing Points in Specific Heat Curves of Correlated Systems
• Susceptibility and Low Temperature Thermodynamics of Spin-1/2 Heisenberg Ladders
• Field-Induced Magnetic Order in Quantum Spin Liquids
• Random-Singlet Phase in Disordered Two-Dimensional Quantum Magnets
• Sequential structural and antiferromagnetic transitions in BaFe${}_2$Se${}_3$ under pressure
• Non-magnetic Impurities in Spin Gap Systems
• Pressure-driven phase transition from antiferromagnetic semiconductor to nonmagnetic metal in two-leg ladders $A$Fe${}_2$$X$${}_3$ ($A$=Ba or K, $X$=S or Se)
• Weakly disordered spin ladders
• Strongly disordered spin ladders
• Impurity Effect on Spin Ladder System
• Phases and phase transitions in disordered quantum systems
• Magnetic properties and pairing tendencies of the iron-based superconducting ladder BaFe${}_2$S${}_3$: combined ab initio and density matrix renormalization group study
• Effects of Nonmagnetic Impurity Doping on Spin Ladder System
• Spin ladders with nonmagnetic impurities
• First-principles study of magnetic properties in Fe-ladder compound BaFe2S3
• Nearly universal crossing point of the specific heat curves of Hubbard models
• Phase diagram of an asymmetric spin ladder
• Properties of the random-singlet phase: from the disordered Heisenberg chain to an amorphous valence-bond solid
• Susceptibilities of Sr(Cu_(1-x)Zn_x)_2O_3 Studied by Quantum Monte Carlo Simulation
• Phase diagrams and universality classes of random antiferromagnetic spin ladders
• Magnetic states of iron-based two-leg ladder tellurides
• Topological Order Parameters of the Spin-1/2 Dimerized Heisenberg Ladder in Magnetic Field
• Phase transitions and magnetization of the mixed-spin Ising-Heisenberg double sawtooth frustrated ladder
• Competing phases in spin ladders with ring exchange and frustration
• Magnetization plateaux in dimerized spin ladder arrays
• Magnetic phase diagram of the dimerized spin $S=1/2$ ladder
• Dynamic structure factor of disordered quantum spin ladders
• Magnetic responses of randomly depleted spin ladders
• Disordered Quantum Spin Chains with Long-Range Antiferromagnetic Interactions
• Magnetic Susceptibilities of Spin-1/2 Antiferromagnetic Heisenberg Ladders and Applications to Ladder Oxide Compounds
• Ferrimagnetic mixed-spin ladders in weak and strong coupling limits
• Exactly solvable su(N) mixed spin ladders
• Renormalization group analysis for the quasi-1D superconductor BaFe${}_2$S${}_3$
• From order to randomness: Onset and evolution of the random-singlet state in bond-disordered BaCu${}_2$(Si${}_{1-x}$Ge${}_x$)${}_2$O${}_7$ spin-chain compounds
• Structural, magnetic, and electronic evolution of the spin-ladder system BaFe${}_2$S${}_{3-x}$Se${}_x$ with isoelectronic substitution
• Frustrated spin-1/2 ladder with ferro- and antiferromagnetic legs
• Quantum phase diagram of an exactly solved mixed spin ladder
• Mixed spin ladders with exotic ground states
• Generic short-range interactions in two-leg ladders
• Bond Disorder in Even-Leg Heisenberg Ladders

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