Dynamical chiral magnetic current and instability in Weyl semimetals

Amitani, Tatsuya; Nishida, Yusuke

doi:10.1103/physrevb.107.014302

Cited by 5 publications

(2 citation statements)

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“…Currently, various mechanisms for instabilities in WSM have been proposed [42][43][44][45][46][47]. In the systems in which the filled valence band is in contact with the conduction band, the instability can be caused by gapless excitations around the zero-energy manifold, which are characterized by a smaller dimension compared to the spatial dimension of the system itself [43].…”

Section: Fhs Mis With Wsmmentioning

confidence: 99%

“…In the systems in which the filled valence band is in contact with the conduction band, the instability can be caused by gapless excitations around the zero-energy manifold, which are characterized by a smaller dimension compared to the spatial dimension of the system itself [43]. Instabilities induced by a magnetic field are also considered [44,45] and, in addition to the traditional Dyakonov-Shur instability for plasmons, entropy wave instability was discovered [46]. Instability of Weyl semi-metals against Coulomb interaction could also contribute [47,48].…”

Section: Fhs Mis With Wsmmentioning

confidence: 99%

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Charge Critical Phenomena in a Field Heterostructure with Two-Dimensional Crystal

Danilyuk,

Podryabinkin,

Shaposhnikov

et al. 2024

Solids

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The charge properties and regularities of mutual influence of the electro-physical parameters in a metal (M)/insulator (I)/two-dimensional crystal heterostructure were studied. In one case, the transition metal dichalcogenide (TMD) MoS2 was considered as a two-dimensional crystal, and in another the Weyl semi-metal (WSM) ZrTe5, representative of a quasi-two-dimensional crystal was chosen for this purpose. By self-consistently solving the electrostatic equations of the heterostructures under consideration and the Fermi–Dirac distribution, the relationship between such parameters as the concentration of charge carriers, chemical potential, and quantum capacitance of the TMD (WSM), as well as the capacitance of the I layer and the interface capacitance I–TMD (WSM), and their dependence on the field electrode potential, have been derived. The conditions for the emergence of charge instability and the critical phenomena caused by it are also determined.

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