具有随时间变化的自旋轨道耦合的双量子点自旋共振

IF 0.6 4区物理与天体物理 Q4 PHYSICS, APPLIED

Low Temperature Physics Pub Date : 2024-02-22 DOI:10.1063/10.0024326

G. Giavaras

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引用次数: 0

摘要

具有恒定自旋轨道耦合（SOC）的双量子点中的双自旋共振可由交流场诱导，交流场可周期性地调制能量失谐。但是，较大的交流场振幅可能会无意中触发自旋轨道耦合的交流调制，进而改变共振频率和电流峰值的形式。在这里，我们证明了根据应用磁场和双量子点参数的不同，SOC 中的微弱时间依赖性会对共振峰产生完全不同的影响；特别是，它可以增强峰值，但也可以完全抑制峰值。

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Double quantum dot spin resonances with a time-dependent spin-orbit coupling

Two-spin resonances in double quantum dots with a constant spin-orbit coupling (SOC) can be induced by an ac field which periodically modulates the energy detuning. But a large ac field amplitude may unintentionally trigger an ac modulation in the SOC, which in turn can alter the frequency of the resonances and the form of the current peaks. Here, we demonstrate that depending on the applied magnetic field and the double quantum dot parameters a weak time dependence in the SOC can have a completely different effect on the resonant peaks; in particular, it can enhance the peaks, but it can also completely suppress them.

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来源期刊

Low Temperature Physics 物理-物理：应用

CiteScore

1.20

自引率

25.00%

发文量

138

审稿时长

3 months

期刊介绍： Guided by an international editorial board, Low Temperature Physics (LTP) communicates the results of important experimental and theoretical studies conducted at low temperatures. LTP offers key work in such areas as superconductivity, magnetism, lattice dynamics, quantum liquids and crystals, cryocrystals, low-dimensional and disordered systems, electronic properties of normal metals and alloys, and critical phenomena. The journal publishes original articles on new experimental and theoretical results as well as review articles, brief communications, memoirs, and biographies. Low Temperature Physics, a translation of the copyrighted Journal FIZIKA NIZKIKH TEMPERATUR, is a monthly journal containing English reports of current research in the field of the low temperature physics. The translation began with the 1975 issues. One volume is published annually beginning with the January issues.