期刊
EPL
卷 113, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/113/37002
关键词
-
资金
- DFG [SPP1666, SFB1170]
- Helmholtz Foundation (VITI)
- ENB Graduate school on Topological Insulators
The weakly interacting helical Luttinger liquid, due to spin momentum locking, is characterized by extremely peculiar local observables: we show that the density-density correlation functions do not exhibit signatures of Friedel and Wigner oscillations, and that spin-spin correlation functions, which are strongly anisotropic, witness the formation of a planar spin wave. Moreover, we demonstrate that the most relevant scattering potentials involving a localized impurity are not able to modify the electron density, while only magnetic impurities can pin the planar spin density wave. Copyright (C) EPLA, 2016
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