Quantum phase diagram of the frustrated spin ladder with next-nearest-neighbor interactions
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چکیده
منابع مشابه
Phase diagram of the XXZ chain with next-nearest-neighbor interactions
We calculate the quantum phase diagram of the XXZ chain with nearestneighbor (NN) J1 and next-NN exchange J2 with anisotropies ∆1 and ∆2 respectively. In particular we consider the case ∆1 = −∆2 to interpolate between the XX chain (∆i = 0) and the isotropic model with ferromagnetic J2. For ∆1 < −1, a ferromagnetic and two antiferromagnetic phases exist. For |∆i| < 1, the boundary between the di...
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We introduce a fully frustrated XY model with nearest neighbor (nn) and next nearest neighbor (nnn) couplings which can be realized in Josephson junction arrays. We study the phase diagram for 0 ≤ x ≤ 1 (x is the ratio between nnn and nn couplings). When x < 1/ √ 2 an Ising and a BerezinskiiKosterlitz-Thouless transitions are present. Both critical temperatures decrease with increasing x. For x...
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Giancarlo Franzese, 1,2,3,* Vittorio Cataudella, S. E. Korshunov, and Rosario Fazio Istituto Nazionale per la Fisica della Materia (INFM), Unità di Napoli e Catania, Italy Dipartimento di Scienze Fisiche, Universitá ‘‘Federico II,’’ Mostra d’Oltremare, Padiglione 19, 80125 Napoli, Italy Dipartimento di Fisica ‘‘E. Amaldi,’’ Università Roma Tre, via della Vasca Navale 84, 00146 Roma, Italy L. D....
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The low-energy properties of one-dimensional quantum spin systems with frustrating interactions have been studied extensively for many years. This is mainly because they exhibit a variety of ground-state phases accompanied with various types of spontaneous symmetry breaking, e.g., the dimer phase with the translational symmetry breaking. More recently novel phases have been found in the ground ...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2012
ISSN: 1367-2630
DOI: 10.1088/1367-2630/14/6/063019