Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Rosenstein, B. | en_US |
dc.contributor.author | Lewkowicz, M. | en_US |
dc.date.accessioned | 2019-04-03T06:42:54Z | - |
dc.date.available | 2019-04-03T06:42:54Z | - |
dc.date.issued | 2013-07-03 | en_US |
dc.identifier.issn | 2469-9950 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevB.88.045108 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/22213 | - |
dc.description.abstract | The response to an electric field (dc and ac) of electronic systems in which the Fermi "surface" consists of a number of three-dimensional (3D) Weyl points (such as some pyrochlore iridates) exhibits a peculiar combination of characteristics usually associated with insulating and conducting behavior. Generically a neutral plasma in clean materials can be described by a tight-binding model with a strong spin-orbit interaction. A system of that type has a vanishing dc conductivity; however the current response to the dc field is very slow: The current decays with time in a powerwise manner, different from an insulator. The ac conductivity, in addition to a finite real part sigma'(Omega) which is linear in frequency, exhibits an imaginary part sigma '' (Omega) that increases logarithmically as a function of the UV cutoff (atomic scale). This leads to a substantial dielectric response like a large dielectric constant at low frequencies. This is in contrast to a two-dimensional (2D) Weyl semimetal-like graphene at a neutrality point where the ac conductivity is purely pseudodissipative. The Coulomb interaction between electrons is long range and sufficiently strong to make a significant impact on transport. The interaction contribution to the ac conductivity is calculated within the tight-binding model. The result for the real part expressed via the renormalized (at frequency (Omega) over bar) Fermi velocity nu is Delta sigma'(Omega) = e(4)Omega/(9 pi(2)(h) over bar nu)[2 log(Omega/ (Omega) over bar)-5]. | en_US |
dc.language.iso | en_US | en_US |
dc.title | Dynamics of electric transport in interacting Weyl semimetals | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1103/PhysRevB.88.045108 | en_US |
dc.identifier.journal | PHYSICAL REVIEW B | en_US |
dc.citation.volume | 88 | en_US |
dc.citation.issue | 4 | en_US |
dc.citation.spage | 0 | en_US |
dc.citation.epage | 0 | en_US |
dc.contributor.department | 電子物理學系 | zh_TW |
dc.contributor.department | Department of Electrophysics | en_US |
dc.identifier.wosnumber | WOS:000321270300005 | en_US |
dc.citation.woscount | 34 | en_US |
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