Field-induced quantum soliton lattice in a frustrated two-leg spin-1/2 ladder

Abstract

The field-induced quantum phase transitions (QPT) of the spin ladder material Bi(Cu(1-x)Znx)2PO6 have been investigated via 31P nuclear magnetic resonance (NMR) on single-crystal samples with x = 0 and x = 0.01. Measurements at temperatures between 0.25 K and 20 K in magnetic fields up to 31 T served to establish the nature of the various phases. In BiCu2PO6, an incommensurate (IC) magnetic order develops above a critical field mu0*H(c1) ~ 21 T; the field and temperature dependences of the NMR lines and the resulting model for the spin structure are discussed. Supported by results of Density-Matrix Renormalization Group (DMRG) calculations it is argued that the observed field-induced IC order involves the formation of a magnetic-soliton lattice. An additional QPT is predicted to occur at H > H(c1). For x = 0.01, this IC order is found to be stable against site disorder, although with a renormalized critical field.

arXiv comment5 pages, 4 figures + Supplementary material

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Cited by in corpus (20)

• Flatband Engineering of Mobility Edges
• Magnetic transitions in the spin S=5/2 frustrated magnet BiMn2PO6 and strong lattice softening in BiMn2PO6 and BiZn2PO6 below 200 K
• Competing phases in spin ladders with ring exchange and frustration
• Theory of triplon dynamics in the quantum magnet BiCu${}_2$PO${}_6$
• Magnetization Plateaux by Reconstructed Quasi-spinons in a Frustrated Two-Leg Spin Ladder under a Magnetic Field
• Magnetic responses of randomly depleted spin ladders
• Field Induced Chiral Soliton Phase in the Kitaev Spin Chain
• Disorder-induced Revival of the Bose-Einstein Condensation in Ni(Cl${}_{1-x}$Br${}_x$)${}_2$-4SC(NH${}_2$)${}_2$ at High Magnetic Fields
• Minimal model for the frustrated spin ladder system BiCu${}_2$PO${}_6$
• Islands of Chiral Solitons in Integer Spin Kitaev Chains
• Beyond perturbation theory: A time-dependent approach to inelastic scattering spectroscopies in- and away from equilibrium
• Magnetic excitations in magnetization plateaux of a frustrated spin ladder
• Model of spin liquids with and without time-reversal symmetry
• Two Coupled Chains are Simpler than One: Field-induced Chirality in a Frustrated Quantum Spin Ladder
• Honeycomb Heisenberg Spin Ladder: Unusual Ground State and Thermodynamic Properties
• Magnetic field-driven transition between valence bond solid and antiferromagnetic order in distorted triangular lattice
• Low-energy spin excitations in field-induced phases of the spin-ladder antiferromagnet BiCu${}_2$PO${}_6$
• Triplet excitations in the frustrated spin ladder Li${}_2$Cu${}_2$O(SO${}_4$)${}_2$
• Lifshitz Transition Induced by Magnetic Field in Frustrated Two-Leg Spin-Ladder Systems
• Quasi-Spin Correlations in a Frustrated Quantum Spin Ladder