Planar Hall effect in the type-II Weyl semimetal 
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Chen, F. C.; Luo, Xin; Yan, Jiao; Lv, Haifeng; Lu, W. J.; Xi, Chuanying; Tong, P.; Sheng, Zhigao; Zhu, Xuebin; Song, Wenhai; Sun, Yan

doi:10.1103/physrevb.98.041114

Cited by 72 publications

(32 citation statements)

References 28 publications

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“…In addition to electronic transport phenomena, there exist a plethora of studies on the thermal transport properties 30,[35][36][37][38][39][40] . Furthermore, The electronic and thermal transport properties of type-II WSMs can be significantly different compared to type-I WSMs [41][42][43][44][45][46][47][48] . On the other hand, the anisotropic nature of non-linear dispersion can further alter the transport properties as observed for mWSMs [49][50][51][52][53][54][55] .…”

Section: Introductionmentioning

confidence: 99%

Distinct signatures of particle-hole symmetry breaking in transport coefficients for generic multi-Weyl semimetals

Nag,

Kennes

2022

Preprint

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We propose and study generic multi-Weyl semimetal (mWSM) lattice Hamiltonians that break particle-hole symmetry. These models fall into two categories: model I (model II) where the gap and tilt terms are coupled (decoupled) can host type-I and type-II Weyl nodes simultaneously (separately) in a hybrid phase (type-I and type-II phases, respectively). We concentrate on the question of how anisotropy and non-linearity in the dispersions, gaps and tilt terms influence diffusive second order transport quantities namely, the circular photogalvanic effect (CPGE) and the Berry curvature dipole (BCD) as well as first order Magnus Hall effect (MHE) in the ballistic limit. The signatures of topological charges are clearly imprinted in the quantized CPGE response for the hybrid mWSM phase in model I. Such a quantization is also found in the type-I WSM phase for model II, however, the frequency profiles of the CPGE in these two cases is distinctively different owing to their different band dispersion irrespective of the identical topological properties. The contributions from the vicinity of Weyl nodes and away from the WNs are clearly manifested in the BCD response, respectively, for model I model II. The Fermi surface properties for the activated momentum lead to a few hallmark features on the MHE for both the models. Furthermore, we identify distinguishing signatures of the above responses for type-I, type-II and hybrid phases to provide an experimentally viable probe to differentiate these WSMs phases.

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Section: Introductionmentioning

confidence: 99%

Distinct signatures of particle-hole symmetry breaking in transport coefficients for generic multi-Weyl semimetals

Nag,

Kennes

2022

Preprint

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“…One should also note the existence of an interesting Mo 6 Te 6 [2] phase that is not yet much investigated. The 1T' phase is exciting due to the theoretically predicted and experimentally confirmed topological semimetal (i.e., type-II Weyl semimetal) [3] properties, including the occurrence of Fermi arc surface states [4], the giant magnetoresistance [5] or the planar Hall effect [6]. From the other hand, the 2H-MoTe 2 phase is in particular interesting in a 1 ML thickness regime because of a direct energy gap, which value is close to 1.1 eV [7].…”

Section: Introductionmentioning

confidence: 99%

Molecular Beam Epitaxy growth of MoTe$_{\tiny{\textrm{2}}}$ on Hexagonal Boron Nitride

Seredyński,

Bożek,

Suffczyński

et al. 2021

Preprint

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Hexagonal boron nitride has already been proven to serve as a decent substrate for high quality epitaxial growth of several 2D materials, such as graphene, MoSe2, MoS2 or WSe2. Here, we present for the first time the molecular beam epitaxy growth of MoTe2 on atomically smooth hexagonal boron nitride (hBN) substrate. Occurrence of MoTe2 in various crystalline phases such as distorted octahedral 1T' phase with semimetal properties or hexagonal 2H phase with semiconducting properties opens a possibility of realisation of crystal-phase homostructures with tunable properties. Atomic force microscopy studies of MoTe2 grown in a single monolayer regime enable us to determine surface morphology as a function of the growth conditions. The diffusion constant of MoTe2 grown on hBN can be altered 5 times by annealing after the growth, reaching about 5 • 10 −6 cm 2 /s. Raman spectroscopy results suggest a coexistence of both 2H and 1T' MoTe2 phases in the studied samples.

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“…The planar Hall effect (PHE), in contrast to the ordinary Hall effect (OHE), is defined as the transverse voltage that arises when an in-plane magnetic field is applied. First reported in ferromagnetic metals and semiconductors [1,2], the PHE has recently gained traction in a growing number of topological metals and insulators as a tool to probe their relativistic quasiparticles [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. The interplay of chiral, orbital and spin degrees of freedom that governs the PHE in these materials is rich and remains subject to active investigation.…”

Section: Introductionmentioning

confidence: 99%

Planar Hall effect with sixfold oscillations in a Dirac antiperovskite

Huang,

Nakamura,

Takagi

2021

Preprint

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The planar Hall effect (PHE), wherein a rotating magnetic field in the plane of a sample induces oscillating transverse voltage, has recently garnered attention in a wide range of topological metals and insulators. The observed twofold oscillations in ρyx as the magnetic field completes one rotation are the result of chiral, orbital and/or spin effects. The antiperovskites A3BO (A = Ca, Sr, Ba; B = Sn, Pb) are topological crystalline insulators whose low-energy excitations are described by a generalized Dirac equation for fermions with total angular momentum J = 3/2. We report unusual sixfold oscillations in the PHE of Sr3SnO, which persisted nearly up to room temperature. Multiple harmonics (twofold, fourfold and sixfold), which exhibited distinct field and temperature dependencies, were detected in ρxx and ρyx. These observations are more diverse than those in other Dirac and Weyl semimetals and point to a richer interplay of microscopic processes underlying the PHE in the antiperovskites.

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Planar Hall effect in the type-II Weyl semimetal Td−MoTe2

Cited by 72 publications

References 28 publications

Distinct signatures of particle-hole symmetry breaking in transport coefficients for generic multi-Weyl semimetals

Distinct signatures of particle-hole symmetry breaking in transport coefficients for generic multi-Weyl semimetals

Molecular Beam Epitaxy growth of MoTe$_{\tiny{\textrm{2}}}$ on Hexagonal Boron Nitride

Planar Hall effect with sixfold oscillations in a Dirac antiperovskite

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