Giant intrinsic spin Hall effect in layered material Pt<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e718" altimg="si41.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math>B

Zou, Zhengchun; Li, Wenqi; Li, Zehou; Zhou, Pan; Ma, Zengsheng; Sun, Lizhong

doi:10.1016/j.physe.2022.115323

Cited by 1 publication

(2 citation statements)

References 31 publications

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“…Furthermore, we can find from Table 4 that NbB has a maximal SHC value of 320 (ℏ/e) (S/ cm) among all Nb-B compounds. In comparison, the maximal value of the SHC tensor of MoTe 2 ∼ 361 (ℏ/e) (S/cm), 79 WTe 2 ∼ 204 (ℏ/e) (S/cm), 79 LaAlSi ∼ 336 (ℏ/e) (S/cm), 22 LaAlGe ∼ 351 (ℏ/e) (S/cm), 22 Pt 2 B ∼ 2159 (ℏ/e) (S/cm), 29 TiH 2 ∼ 209 (ℏ/e) (S/cm), 20 ZrH 2 ∼ 395 (ℏ/e) (S/cm), 20 HfH 2 ∼ 1110 (ℏ/e) (S/cm), 20 ThH 2 ∼ 1037 (ℏ/e) (S/cm), 20 GaAs ∼ 100 (ℏ/e) (S/cm), 80 TaAs ∼ 781 (ℏ/e) (S/cm), 28 and Ta 3 As ∼ 1500 (ℏ/e) (S/cm). 23 Apparently, the SHC value of NbB is predicted to stand in a medium value when compared with these compounds in reported articles.…”

Section: ■ Results and Discussionmentioning

confidence: 93%

“…[21][22][23]27 For example, the SHE in LaAlSi and LaAlGe, 22 MH 2 (M = Hf, Th), 20 TaAs, 28 and Ta 3 As family 23 has already been illustrated and the results show that topological semimetals are good platforms to explore SHE and the spintronic applications. More intriguingly, recent articles on the SHE of borides, like Pt 2 B, 29 monolayer NiB, 30 Ta-B spin Hall electrode, 31 and Co-Ni-B alloys, 32 may infer that TMBs are promising candidates to investigate the SHE.…”

Section: ■ Introductionmentioning

confidence: 99%

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Scanning Intrinsic Superconductivity and the Spin Hall Effect in Niobium Borides

Song

Qin

Chen

et al. 2023

Crystal Growth & Design

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Although niobium borides have been extensively studied on their mechanical properties, a systematic investigation on their potential metastable phases, superconducting excitations, and spin Hall effects (SHE) is still lacking. Herein, we carry out a global structure search in the Nb-B system based on the evolutionary algorithm and density functional theory. Thermodynamical, dynamical, mechanical, and quasiharmonic approximation investigations unveil four new phases, Nb 3 B 5 , Nb 2 B 5 , Nb 3 B 7 , and Nb 5 B 4 , which are promising candidates for experimental preparations. Moreover, the superconducting transitions of all Nb-B compounds are performed from electron−phonon calculations. In addition, all Nb-B compounds are predicted to be topologically nontrivial. More intriguingly, Nb 2 B 5 is unveiled as a promising noncentrosymmetric superconductor to explore topological superconducting excitation. Furthermore, nonzero spin Hall conductivity (SHC) tensor elements of all Nb-B compounds are predicted, and NbB is predicted to own a maximal SHC value of 320 (ℏ/e) (S/cm) among all Nb-B compounds. Our theoretical results fill in the gap on superconducting and SHC parameters of Nb-B binaries, demonstrating that Nb-B binaries are a potential choice to explore superconducting excitations and topological states and to investigate the SHE.

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