首页|Tunneling spectra of superconductor- Kitaev layer -metal junctions

Tunneling spectra of superconductor- Kitaev layer -metal junctions

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In this letter we construct a superconductor-Kitaev quantum spin liquid (QSL)-metal/semimetal tunnelling junction. By the tunnelling current, conductance, and d2I/dV2, we investigate the spin dynamics of the Kitaev QSL. We show that the d2I/dV2 of the tunneling current has three characteristics: the spectral gap at 0.26K, the positions of peak and dip at omega approximate to 0.5K and 2.26K, respectively, except for an energy shift of superconducting gap Delta = 0.5K. These characteristics are the same as the spin correlations function of the Kitaev QSL. These results show that the tunnelling junction method could be a powerful tool in revealing the exotic spin excitation properties of the QSL materials.

HeterojunctionQuantum spin liquidKitaev quantum spin liquid modelMajorana fermionsQUANTUMANYONS

Lyu, Jing-Jing、Jia, Shi-Qing、Zou, Liang-Jian

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Chinese Acad Sci

2022

Physica

Physica

ISSN:0921-4526
年,卷(期):2022.625
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