Tracking spin and charge with spectroscopy in spin-polarised 1D systems
Tracking spin and charge with spectroscopy in spin-polarised 1D systems
复制标题
在自旋极化一维系统中利用光谱跟踪自旋和电荷
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
P. Schmitteckert
中科院分区：
文献类型：
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作者：
T. Ulbricht;P. Schmitteckert
我们计算了一维强相互作用费米子链的谱函数，其中的响应可以很好地理解为自旋和霍隆激发。当自旋物种之间的自旋不平衡增加时，我们观察到完全极化系统的单电子响应从霍隆峰发出，而自旋响应消失。对于探测一维性质的实验装置，我们提出这种方法作为一种额外的通用工具，以帮助识别光谱结构，例如在ARPES测量。我们表明，这甚至适用于被困系统具有冷原子气体实验的想法。首次在全动量范围内计算了磁场中的谱函数。
We calculate the spectral function of a one-dimensional strongly interacting chain of fermions, where the response can be well understood in terms of spinon and holon excitations. Upon increasing the spin imbalance between the spin species, we observe the single-electron response of the fully polarised system to emanate from the holon peak while the spinon response vanishes. For experimental setups that probe one-dimensional properties, we propose this method as an additional generic tool to aid the identification of spectral structures, e.g. in ARPES measurements. We show that this applies even to trapped systems having cold atomic gas experiments in mind. Calculations of the spectral function in a magnetic field are presented in the full momentum range for the first time.
从有限系统计算格林函数
DOI：
10.1088/1742-6596/220/1/012022
发表时间：
2010
期刊：
Journal of Physics: Conference Series
影响因子：
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作者：
P. Schmitteckert
通讯作者：
P. Schmitteckert