- Spin-Peierls transition in low-dimensional quantum spin systems: a.
- Academics in Low Dimensional Spin System - A.
- (PDF) Low-dimensional quantum spin systems - ResearchGate.
- Low-dimensional spin S = 1/2 system at the quantum critical limit.
- Electron Spin Resonance and Related Phenomena in Low-Dimensional.
- PDF Excitations in Quantum Spin Systems in Low Dimensional Systems.
- Two-dimensional electron gas - Wikipedia.
- Confinement Dimension Quantum One In.
- Jordan-Wigner Fermionization and the Theory of Low-Dimensional Quantum.
- Jordan-wigner Fermionization and The Theory of Low-dimensional Quantum.
- Numerical study of thermal effects in low dimensional quantum spin systems.
- Magnetic Light Scattering in Low Dimensional Quantum Spin Systems.
- Pulse-field Experiments on The Spin-lattice Interaction in Low.
- Low-dimensional quantum spin systems in pulsed magnetic fields - NASA/ADS.
Spin-Peierls transition in low-dimensional quantum spin systems: a.
When global spin rotational invariance is not broken, the conventional spin-wave theory is inapplicable. To proceed, a modified spin-wave theory for low-dimensional quantum magnetic systems is formulated under the constraint of zero magnetization. This theory can describe disordered state directly, and can be generalized to the ordered phase by identifying the magnetic ordering with the Bose. On low-dimensional magnetic insulators [ii,2-15] have given strong evidence for the presence of a third channel for heat transport, namely a contribution of magnetic excitations. This thesis studies the transport properties of low-dimensional quantum spin models, including transport of spin or magnetization and heat transport.
Academics in Low Dimensional Spin System - A.
Low Dimensional Semiconductors. The semiconductor based implementation of a solid-state quantum information processing system, where typically the spin configuration of one or a few electrons constitutes a qubit, can be realized through the formation of an array of quantum dots using electrostatic gates over a quantum well created in a semiconductor heterostructure. The question of whether quantum fluctuations are able to eliminate long-range order (LRO) in low-dimensional quantum spin systems with planar symmetry at T equals 0, is studied using a recently developed renormalization-group approach to the investigation of LRO at T equals 0. The solutions of the RG equations point to the existence of order in. Topics are interactions and new phases in one-dimensional systems and the identification of power laws in transport and optical properties, carbon nanotubes, non-equilibrium transport in zero and one dimension, spin-related effects, and novel effects in two-dimensional systems under quantum Hall conditions.
(PDF) Low-dimensional quantum spin systems - ResearchGate.
Low-dimensional quantum spin systems are interacting many body systems for which several rigorous results are known. Powerful techniques like the Bethe Ansatz provide exact knowledge of the ground state energy and low-lying excitation spectrum. A large number of compounds exist which can effectively be described as low-dimensional spin systems. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The Jordan-Wigner transformation is known as a powerful tool in condensed matter theory, especially in the theory of low-dimensional quantum spin systems. The aim of this chapter is to review the application of the Jordan-Wigner fermionization technique for calculating dynamic quantities of low-dimensional quantum. Ergodicityfrom Nonergodicityin Quantum Correlations of Low-dimensional Spin R. Prabhu, Aditi Sen(De), and Ujjwal Sen Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad 211 019, India.
Low-dimensional spin S = 1/2 system at the quantum critical limit.
We report the results of measurements of the dc susceptibility and the 23Na-NMR response of Na2V3O7, a recently synthesized, nonmetallic low dimensional spin system. Our results indicate that, upon reducing the temperature to below 100 K, the V4+ moments are gradually quenched, leaving only one mome. DOI: 10.1016/S0370-1573(02)00321-6 Corpus ID: 119524490; Magnetic light scattering in low-dimensional quantum spin systems @article{Lemmens2003MagneticLS, title={Magnetic light scattering in low-dimensional quantum spin systems}, author={Peter Lemmens and Gernot Guntherodt and Claudius Gros}, journal={Physics Reports}, year={2003}, volume={375}, pages={1-103} }.
Electron Spin Resonance and Related Phenomena in Low-Dimensional.
Bajnok - Ads/CFT Correspondence From an Integrable Point of View. Bajnok - Finite Volume Diagonal Form Factors and AdS/CFT. Batchelor - The Mixed Ferro-Antiferromagnetic 3-state Quantum Potts Chain, Quantum Chiral Clock Model and Free Parafermions. Braak - Integrable and Non-Integrable Models in Quantum Optics.
PDF Excitations in Quantum Spin Systems in Low Dimensional Systems.
Low-dimensional quantum spin systems are interacting many body systems for which several rigorous results are known. Powerful techniques like the Bethe Ansatz provide exact knowledge of the ground state energy and low-lying excitation spectrum. A large number of compounds exists which can effectively be described as low-dimensional spin systems. This thesis develops new techniques for simulating the low-energy behaviour of quantum spin systems in one and two dimensions. Combining these developments, it subsequently uses the formalism of tensor network states to derive an effective particle description for one- and two-dimensional spin systems that exhibit strong quantum correlations.
Two-dimensional electron gas - Wikipedia.
Two-dimensional (2D) quantum materials offer a unique platform to explore mesoscopic phenomena driven by interfacial and topological effects. Their tunable electric properties and bidimensional nature enable their integration into sophisticated heterostructures with engineered properties, resulting in the emergence of new exotic phenomena not accessible in other platforms.
Confinement Dimension Quantum One In.
An attractive feature of some low-dimensional magnets is a spin-liquid state defying a long-range order. The liquid may be either gapped or gapless, dependent on the type of quantum statistics.
Jordan-Wigner Fermionization and the Theory of Low-Dimensional Quantum.
In the meantime, successful fabrication and characterization of low-dimensional systems have brought new phenomenology and physical insights. In this dissertation I will theoretically explore a few low-dimensional models using Majorana fermions and higher-spin moments as building blocks.
Jordan-wigner Fermionization and The Theory of Low-dimensional Quantum.
In one-dimensional models, the state of the system is described by a single variable In contrast, the spectrum of single-particle states in a quantum well or quantum-well wire is a set of subbands of two- or one-dimensional states, respectively 1x Quantum Fluid This value is much improved in comparison with the bulk electron mobility of 8000 cm. Semi-classical perspective on dynamics of correlations in quantum spin models with long-range interactions TBA. Generalised Hydrodynamics on an atom chip... Quantum quench dynamics in systems with unconventional excitations Signatures of (in)distinguishability in the dynamics of (interacting) bosons... Electron transport in low-dimensional. His current research is focused on the theoretical description of mesoscopic and low-dimensional systems, spins in semiconductors, and graphene. Ferromagnetic order of nuclear spins coupled to conduction electrons: A combined effect of electron-electron and spin-orbit interactions. Robert Andrzej Żak, Dmitrii L. Maslov, and Daniel Loss.
Numerical study of thermal effects in low dimensional quantum spin systems.
The Jordan-Wigner transformation is known as a powerful tool in condensed matter theory, especially in the theory of low-dimensional quantum spin systems. The aim of this chapter is to review the application of the Jordan-Wigner fermionization technique for calculating dynamic quantities of low-dimensional quantum spin models. After a brief introduction of the Jordan-Wigner transformation for. The compounds, CuCrO4 (3d9) and TiPO4 (3d1), are shown to have completely different ground states despite both being largely isostructural and S = 1/2 quantum spin systems. In this work and the resulting publications it is shown that CuCrO4 is a one-dimensional S = 1/2 spin chain with anti-ferromagnetic nearest- and next nearest-neighbour spin. Low-dimensional quantum spin systems are interacting many body systems for which several rigorous results are known. Powerful techniques like the Bethe Ansatz provide exact knowledge of the ground.
Magnetic Light Scattering in Low Dimensional Quantum Spin Systems.
Quantum spin systems are insulating crystals containing regular array of atoms carrying spin S = 1/2 or 1, described by simple spin Hamiltonians. In low-dimensional model compounds, we study by Nuclear Magnetic Resonance (NMR), which is a microscopic probe to magnetism, the magnetic-field-induced "exotic" phases, such as the Bose-Einstein. A central concept in describing these low-dimensional quantum spin systems is that of a spin liquid. This ground state is dominated by strong quantum uctuations, pronounced spin-spin cor- relations and a suppression of long-range magnetic order.
Pulse-field Experiments on The Spin-lattice Interaction in Low.
Low-dimensional quantum magnets promote strong correlations between magnetic moments that lead to fascinating quantum phenomena. A particularly interesting system is the antiferromagnetic spin-1/2 Heisenberg chain because it is exactly solvable by the Bethe-Ansatz method. Several exactly solvable quantum spin models with incommensurate magnetic structures, which manifest quantum phase transitions between incommensurate and commensurate phases, are proposed. The ground-state and thermodynamic characteristics of these quantum spin antiferromagnetic models with the Dzyaloshinsky-Moriya antisymmetric exchange interaction and spin-frustrating next-nearest-neighbor. In this contribution we present and discuss our results for selected low-dimensional compounds such as the homogeneous antiferromagnetic Heisenberg spin chain Cu (II)-bispyrazoldihydroxybenzene, which is a new quasi-1d Cu (II)-coordination polymer, the dimerized spin chain (VO) 2 P 2 O 7, and the plateau systems SrCu 2 (BO 3) 2 and NH 4 CuCl 3.
Low-dimensional quantum spin systems in pulsed magnetic fields - NASA/ADS.
A two-dimensional electron gas (2DEG) is a scientific model in solid-state physics. It is an electron gas that is free to move in two dimensions, but tightly confined in the third. This tight confinement leads to quantized energy levels for motion in the third direction, which can then be ignored for most problems. Jun 17, 2022 · At the same time, modeling such systems is a long-standing open problem. Simultaneous introduction of the charge and spin degrees of freedom into a nonlinear extension of Tomonaga-Luttinger liquid (TLL) theory predicted that the spin-charge separation would no longer exist beyond the low-energy regime (17, 18), since the holons (i.e., charge-type excitations) are made unstable by the. Experimental measurements of heat conduction in the low-dimensional antiferromagnetic compounds CuSb2O6 and BiCu2PO6 are presented for the range 0.5K≤T≤390K. Both compounds have magnetic exchange ( J) and Debye (θ_D) energies that are comparable. This distinguishes the present work from prior studies which have focused on the regime J≫θ_D. Individual crystals were characterized by x.
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