Electronic transport properties of Weyl semimetals with strain-induced gauge fields

Xu, Zhonghui; Siu, Zhuo Bin; Kundu, Anirban; Yeşilyurt, Can; Sun, Chong; Chen, Tong; Jalil, M. B. A.

doi:10.1088/1361-6463/aaf9f1

Cited by 1 publication

(3 citation statements)

References 67 publications

(111 reference statements)

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“…Hence δky = λϵ, where λ is a constant and ϵ is the strain. From the results in [3], we estimate λ ∼ 500 m −1 /microstrain. The strain generated in a piezoelectric by an applied electric field E is ϵ = d 33 E, where d 33 is the diagonal element of the piezoelectric tensor.…”

Section: Resultsmentioning

confidence: 87%

“…] . We will now consider the effect of strain on the Weyl semimetal, which has been examined in, for example, [3][4][5][6][7][8]. Some of these effects can only be observed at very high strain which may not be possible to generate electrically.…”

Section: Theorymentioning

confidence: 99%

“…Some of these effects can only be observed at very high strain which may not be possible to generate electrically. Xu et al [3] modeled the effect of moderate strain as a shift in the wavevectors and energy in the Hamiltonian:…”

Section: Theorymentioning

confidence: 99%

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A spin field effect transistor based on a strained two dimensional layer of a Weyl semimetal

Rahman,

Bandyopadhyay

2023

J. Phys. D: Appl. Phys.

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Spin field effect transistors (SpinFET) are an iconic class of spintronic transistor devices that exploit gate tuned spin-orbit interaction in semiconductor channels interposed between ferromagnetic source and drain contacts to elicit transistor functionality. Recently, a new and different type of SpinFET based on gate tuned strain in quantum materials (e.g. topological insulators) has been proposed and may have interesting analog applications, such as in frequency multiplication, by virtue of its unusual oscillatory transfer characteristic. Here, we propose and analyze yet another type of SpinFET in this class, which may have a different application. It is based on gate-tuned strain in a Weyl semimetal, with the strain modulating spin interference. Because the operating principle is non-classical, the channel conductance shows oscillatory dependence on the channel length at zero gate voltage. Furthermore, the transconductance can switch sign if the channel length is varied. This latter feature can be exploited to implement a complementary device like complementary metal oxide semiconductor (CMOS) by connecting two such SpinFETs of slightly different channel lengths in series. These unusual properties may have niche applications.

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Section: Resultsmentioning

confidence: 87%