Effect of the Dzyaloshinskii-Moriya interaction on heat conductivity in one-dimensional quantum Ising chains

Li, W.; Zhang, Z.; Tong, Peiqing

doi:10.1140/epjb/e2012-20798-6

Cited by 2 publications

(2 citation statements)

References 38 publications

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“…Some effects of DM interaction on heat transport in spin chains have been studied [56,57]. In particular, possible control of heat rectification using DM interaction in a system of two quantum dots has been proposed [58].…”

Section: Introductionmentioning

confidence: 99%

Heat rectification by two qubits coupled with Dzyaloshinskii-Moriya interaction

et al. 2021

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We investigate heat rectification in a two-qubit system coupled via the Dzyaloshinskii-Moriya (DM) interaction. We derive analytical expressions for heat currents and thermal rectification and provide possible physical mechanisms behind the observed results. We show that the anisotropy of DM interaction in itself is insufficient for heat rectification, and some other form of asymmetry is needed. We employ off-resonant qubits as the source of this asymmetry. We find the regime of parameters for higher rectification factors by examining the analytical expressions of rectification obtained from a global master equation solution. In addition, it is shown that the direction and quality of rectification can be controlled via various system parameters. Furthermore, we compare the influence of different orientations of the DM field anisotropy on the performance of heat rectification.

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Section: Introductionmentioning

confidence: 99%

Heat rectification by two qubits coupled with Dzyaloshinskii-Moriya interaction

et al. 2021

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“…For instance, cycloidal spin spirals [4][5][6] , Néel type domain walls [7][8][9][10][11][12] , magnon Hall effect, topological magnon insulators, Skyrmions [13][14][15][16][17][18][19][20] and Skyrmion lattices [21][22][23][24][25][26][27][28] , many of which stimulated interest in fundamental magnetism studies and provided new possibilities for the development of future spintronic devices. In addition, DM interaction is also very important in the quantum dot quantum computing 29,30 , the quantum phase transitions 31,32 , the quantum heat conduction 33 , ferroelectricity in many multiferroics [34][35][36] and the properties of entanglement [37][38][39][40] .…”

Section: Introductionmentioning

confidence: 99%

Synthesizing and controlling helical indirect exchange interactions out of equilibrium

2018

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We study the nonequilibrium effects of spin and/or electric currents on the helical indirect exchange interactions of local spins that embedded in general open electronic systems. Especially, besides the synthesized anisotropic Heisenberg interactions, we find that the synthetic helical indirect exchange interactions possess two parts: antisymmetric (Dzyaloshinskii-Moriya interaction) and symmetric (Kaplan-Shekhtman-Entin-Wohlman-Aharony interaction), which are all formulated in terms of Keldysh nonequilibrium Green's functions. The presence of either spin-orbit coupling or spin polarized currents alone is able to synthesize and control the antisymmetric Dzyaloshinskii-Moriya exchange interactions, as the same direction as spin splitting. However, the appearance of symmetric Kaplan-Shekhtman-Entin-Wohlman-Aharony interactions requires both, i.e., the spin-orbit coupling and spin polarized currents with different splitting directions. Our results show the detailed scheme of controlling the sign, magnitude, and direction of indirect Dzyaloshinskii-Moriya vectors and Kaplan-Shekhtman-Entin-Wohlman-Aharony interactions at nonequilibrium in open quantum devices.

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Effect of the Dzyaloshinskii-Moriya interaction on heat conductivity in one-dimensional quantum Ising chains

Cited by 2 publications

References 38 publications

Heat rectification by two qubits coupled with Dzyaloshinskii-Moriya interaction

Heat rectification by two qubits coupled with Dzyaloshinskii-Moriya interaction

Synthesizing and controlling helical indirect exchange interactions out of equilibrium

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