期刊
JOURNAL OF PHYSICS COMMUNICATIONS
卷 2, 期 4, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2399-6528/aab7e5
关键词
Kitaev chain; zero Modes; cluster models
资金
- Swedish research council
We present an analytical solution for the full spectrum of Kitaev's one-dimensional p-wave superconductor with arbitrary hopping, pairing amplitude and chemical potential in the case of an open chain. We also discuss the structure of the zero-modes in the presence of both phase gradients and next nearest neighbor hopping and pairing terms. As observed by Sticlet et al, one feature of such models is that in a part of the phase diagram, zero-modes are present at one end of the system, while there are none on the other side. We explain the presence of this feature analytically, and show that it requires some fine-tuning of the parameters in the model. Thus as expected, these 'one-sided' zero-modes are neither protected by topology, nor by symmetry.
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