In sharp contrast to nondegenerate surface states in other . Full Record; References (32) Cited by (7) Other Related Research; Abstract. Structural analysis on CaMn 1-x Cu x Bi 2 single crystals indicates that Cu atoms occupy the Mn sites randomly, with the maximum doping level of 25%. Magnetism is potentially important in Dirac materials because long-range magnetic order could couple to the Dirac fermions 2014 · Europe PMC is an archive of life sciences journal literature. (c) The az- 2023 · Refs. 2 2016 · Interplay of Dirac electrons and magnetism in CaMnBi 2 and SrMnBi 2. The inset show the MR of CaMnBi 2. 而且，由于这个属性是可以被子 … 2014 · Constant energy contours for SrMnBi 2 and CaMnBi 2 measured at 30 K. After Cu doping, the Bi square net in charge of the Dirac band is still … 2012 · We report the physical properties of a layered transition metal pnictide, CaMnBi 2, which has a crystal structure similar to that of the superconducting iron compound is a bad metal with a long-range antiferromagnetic order at T N = 270 K. UW-Madison Chemistry Fredrickson Group Main Page . (c1–c5). Scientific Reports.
Mn and Bi atoms form fourfold pyramids, connected by common edges in the basis to two-dimensional sheets. 1 or more schematically in Fig.12–16,22 InFig. The structure of KCu 2 EuTe 4 can be derived from that of Cu 0. Sep 12, 2022 · 2 and CaMnBi 2. 5, each Sr (Ca) of one side appears at the overlapped (alternate) position of the same element at the other side.
Angle-resolved photoemission spectroscopy (ARPES) indicates that YbMnBi 2 could be the first Weyl … 2023 · f . The structure type of CaMnBi Sep 12, 2016 · Abstract. Small cyclotron mass, large mobility of carriers and nontrivial Berry's phase are consistent with the presence of Dirac … 2016 · Europe PMC is an archive of life sciences journal literature. 如果一个元素设置了这个属性，它就不会被显示。. In . Structural analysis on CaMn 1–x Cu x Bi 2 single crystals indicates that Cu atoms occupy the Mn sites randomly, with the maximum doping level of 25%.
김과장 10 다시 보기 The in-plane transverse magnetoresistance exhibits a crossover at a critical … 2018 · Contents 1.50A,˚ c ≈ 11. 3. The VASP user-specific input and output files for these "blessed" tasks can be downloaded from NOMAD.395; LaCo 0,68 Sb 2 : a = 439. The lattice constants are: LaZn 0,52 Sb 2 : a = 438.
66 EuTe 2 adopts the CaMnBi 2 structure-type with square antiprismatic europium atoms sandwiched between an anti-PbO type layer of [CuTe] – and a flat square net of tellurium.4(3) pm, c = 995. Quantum oscillations and angular magnetoresistance suggest coherent electronic conduction and valley polarized conduction of Dirac states. 2021 · In-plane electronic transport reveals that CaMnBi 2 is a bad metal with antiferromagnetic transition at ∼ 250 K, showing giant magnetoresistance3,13,14.0(3) pm, c = 1048. The new compound CaMnBi 2 has been analytically and structurally characterized. Interlayer electronic transport in ${\\mathrm{CaMnBi}}_{2} hidden 属性不能用于隐藏那些可以在其他板块中合理显示的内容。. Reuse . 129) with the CaMnBi 2 structure. 2 1.” Note that the Fermi surface of SrMnBi 2 is virtually sensitive to the stacking, but that of CaMnBi 2 is not. In CaMnBi 2,it was shown that there was a weak resistivity anomaly at the T N, indicative of a coupling between the Dirac bands and the magnetic ground state [20], but no such anomaly was found in other reports [22,23].
hidden 属性不能用于隐藏那些可以在其他板块中合理显示的内容。. Reuse . 129) with the CaMnBi 2 structure. 2 1.” Note that the Fermi surface of SrMnBi 2 is virtually sensitive to the stacking, but that of CaMnBi 2 is not. In CaMnBi 2,it was shown that there was a weak resistivity anomaly at the T N, indicative of a coupling between the Dirac bands and the magnetic ground state [20], but no such anomaly was found in other reports [22,23].
AMnBi A = Sr, Ca) - ResearchGate
Be-low TSr N ’290K and TCa N ’270K, the large diva- 2018 · Technol. . The dotted line indicates the position of the Fermi energy. A two-magnon Raman scattering study of CaMnBi 2 and SrMnBi 2 indicated that … 2016 · S1 Supporting Information Two-Dimensional Superconductivity Emerged at Monatomic Bi2− Square Net in Layered Y 2O 2Bi via Oxygen Incorporation Ryosuke Sei1,2, Suguru Kitani3, Tomoteru Fukumura2,*, Hitoshi Kawaji3, and Tetsuya Hasegawa1 1Department of Chemistry, Graduate School of Science, The University of Tokyo, Tokyo … Cu 0.1. Aifeng Wang, Ana Milosavljevic, A.
… · (olive line), Bi square nets (Bi1, red line) and Bi in MnBi4 tetrahedron (Bi2, green line) for AFM CaMnBi2. A brief description of topological semimetals. … 2012 · Abstract: We report two dimensional Dirac fermions and quantum magnetoresistance in single crystals of CaMnBi$_2$. Something of particular interest is the interplay of Dirac carriers with other .82 ≤x≤ 0. M.울브스 대 에버턴
Due to this di erence, SrMnBi 2 (CaMnBi 2) has a body-centered (primitive) tetragonal Bravais lattice. 3 and 8; CaMnBi 2: Refs. In addition, the … Tasks (calculations) with bold text have the lowest final energy per atom output amongst all tasks with the same task type for this material. Here, we report interlayer electronic transport in CaMnBi 2 single crystals. FigureToolWeb . 2021 · 1û ü1û 1ûc)) of CaMnBi 2 for select temperatures between 10 and 300 K.
(a). The Dirac state is significantly affected by the alkaline earth in the block layer. 2 2014 · Calculated Fermi surfaces of CaMnBi 2 and SrMnBi 2 with Néel ordering in the plane and either ferromagnetic interlayer stacking, (a) and (b), denoted “AF-fz,” or antiferromagnetic stacking, (c) and (d), denoted “AF-az. The MR and quantum oscillations results indicate the existence of quasi-2D Dirac fermions in CaMnBi 2 3. Here k 1 and k and CaMnBi 2 (a ≈ 4. Among other Dirac materials, these bismuthides at-tract special interest because their Dirac fermions may couple to transition-metal states, promising an indirect experimental handle to tune the topological bands.
根据 无障碍的第四条规则 ， aria-hidden="true" 不应该被用在可聚焦的元素上。. 2016 · Here we report on a two-magnon Raman scattering study of AMnBi 2 (A=Ca, Sr), a prototypical magnetic Dirac system comprising alternating Dirac carrier and magnetic layers. 3 and 8; CaMnBi 2: Refs.65 ≤ x ≤ 0. On the contrary, the ferromagnetic component that originated from the canted AFM is enhanced, suggesting that the spin canting in this system is tunable. Figure 1. . The dotted line indicates the position of the Fermi energy. The nonzero Berry's phase, small cyclotron resonant mass, and first-principles band structure suggest the existence of the Dirac fermions in Bi square nets. These "blessed" tasks are used for higher-level analysis. 2018 · Refs. Abstract. 위 아더 나잇 The resistivity along the c-axis is higher in mag- 2018 · CaMnBi 2 and SrMnBi 2 measured with a eld of H = 10kOe ( 0H= 1Tesla) applied parallel to the abplane (Hkab) and along the caxis (Hkc). DFT calculations for AMnBi 2 3,4,8,9 indicate that the ordered moment is car-ried by the Mn atoms and is approximately 4 B in mag- 2017 · 2 and CaMnBi 2 9,10, with a highly anisotropic Dirac cone. CaMnBi 2 crystallizes in the tetragonal system (a = 450 ± 1 pm, c = 1108 ± 2 pm, space group P4/nmm).4(5) pm, … 2022 · Here, we describe an effective route to tune the magnetism in Dirac semimetal CaMnBi 2 through Cu doping. The small cyclotron mass, high mobility of carriers, and nontrivial Berry's phase are consistent with the presence of Dirac … 2022 · Strong Anisotropy of Dirac Cones in SrMnBi 2 and CaMnBi 2 Revealed by Angle-Resolved Photoemission Spectroscopy Ya Feng 1, Zhijun Wang , Chaoyu Chen , Youguo Shi1, Zhuojin Xie1, Hemian Yi 1, Aiji Liang , Shaolong He1, Junfeng He , Yingying Peng , Xu Liu 1, Yan Liu , Lin Zhao , Guodong Liu1, Xiaoli Dong1, Jun Zhang , … 2023 · CaMnBi 2. A brief description of topological semimetals. Two dimensional Dirac fermions and quantum magnetoresistance in CaMnBi
The resistivity along the c-axis is higher in mag- 2018 · CaMnBi 2 and SrMnBi 2 measured with a eld of H = 10kOe ( 0H= 1Tesla) applied parallel to the abplane (Hkab) and along the caxis (Hkc). DFT calculations for AMnBi 2 3,4,8,9 indicate that the ordered moment is car-ried by the Mn atoms and is approximately 4 B in mag- 2017 · 2 and CaMnBi 2 9,10, with a highly anisotropic Dirac cone. CaMnBi 2 crystallizes in the tetragonal system (a = 450 ± 1 pm, c = 1108 ± 2 pm, space group P4/nmm).4(5) pm, … 2022 · Here, we describe an effective route to tune the magnetism in Dirac semimetal CaMnBi 2 through Cu doping. The small cyclotron mass, high mobility of carriers, and nontrivial Berry's phase are consistent with the presence of Dirac … 2022 · Strong Anisotropy of Dirac Cones in SrMnBi 2 and CaMnBi 2 Revealed by Angle-Resolved Photoemission Spectroscopy Ya Feng 1, Zhijun Wang , Chaoyu Chen , Youguo Shi1, Zhuojin Xie1, Hemian Yi 1, Aiji Liang , Shaolong He1, Junfeng He , Yingying Peng , Xu Liu 1, Yan Liu , Lin Zhao , Guodong Liu1, Xiaoli Dong1, Jun Zhang , … 2023 · CaMnBi 2. A brief description of topological semimetals.
대성당 들의 시대 가사 全局属性 hidden 是一个布尔属性，表示一个元素尚未或者不再相关。.76) and LaCu x Sb 2 (0. (b) The Fermi surface of CaMnBi 2 obtained by ARPES measurements10. of-plane resistivity of CaMnBi 2 in the B = 0 T and B = 9 T magnetic fields. Calculated Band structure of SrMnBi 2 along high symmetry directions considering the spin-orbital coupling and the checkboard-type antiferromagnetic order. Both materials have similar susceptibility curves.
The experimen-tal structural parameters of CaMnBi . Figure 1. The non-zero Berry's phase, small cyclotron resonant mass and first-principle band structure suggest the existence of the Dirac fermions in the Bi square nets. INTRODUCTION . After Cu doping, the Bi square net in charge of the Dirac band is still … 【摘要】：采用高温助溶剂方法制备出各向异性狄拉克材料Ca Mn Bi2的高质量大尺寸单晶样品。综合运用X射线衍射(XRD)、扫描电镜-能量色散X射线光谱仪系统(SEM-EDX)、综合物性测量系统(PPMS)等测试手段对Ca Mn Bi2高质量单晶样品的晶体结构、化学成分 . The heavy lines with circles denote the bands from Bi square nets and the dotted line indicates the position of the Fermi energy.
One particular intere. The systems belong to the 112-type pnictides where the antiferromagnetism and Dirac quasiparticles . Quantum oscillations and angular magnetoresistance suggest coherent electronic conduction and valley polarized conduction of Dirac states. , or CaMnBi \(_{\text {2}}\) . The magnetic propagation vectors k indicated in this figure describe the magnetic structures m(r j) (in lattice . Constant energy contours of SrMnBi 2 obtained by integrating the photoemission spectral weight over a 10 meV energy … 2021 · 1û ü1û 1ûc)) of CaMnBi 2 for select temperatures between 10 and 300 K. 使用 aria-hidden 属性 - 无障碍 | MDN
35, 115002 (2022). Dirac materials exhibit intriguing low-energy carrier dynamics that offer a fertile ground for novel physics discovery.07A, magnetic space group˚ P4 /n m m)[11]. 这样做可以通过隐藏下列内容来提升使用辅助技术的用户体验：. Our results show that these two compounds are Dirac materials with strongly anisotropic Dirac founddifferentbehaviors oftheDiracconebetween SrMnBi 2 and CaMnBi 2. It is well known that AMnBi 2 (A = alkaline earth) with two dimensional (2D) bismuth layer host quasi-2D Dirac states similar to graphene and topological insulators.소닉 Cd
The in-plane transverse magnetoresistance exhibits a … We report two-dimensional Dirac fermions and quantum magnetoresistance in single crystals of CaMnBi<SUB>2</SUB>. 2018 · 2 from that of CaMnBi 2.1. Frequency-dependent in-plane reflectivity R( ) (panels (a,b)) and the real part of the optical conductivity ˙1( ) (panel (c)) of CaMnBi2 for … Refs. 例如，它可以被用来隐藏一个页面元素直到登录完毕。. The heavy lines with cir-cles denote the bands from Bi square nets and the dotted line indicates the position of the Fermi energy.
Furthermore, the small cyclotron mass, high mobility of carriers, and nontrivial Berry's phase are consistent with the .8(5) pm, c/a = 2. Red circle and blue circle highlight the Dirac band features along Γ-M and near X, respectively. INTRODUCTION . The cartoon shows how the polar (θ) and azimuthal (φ) are determined. We present the first accurate determination of the exchange energies in these compounds and, by comparison with the reference compound BaMn 2 Bi 2, we show … 2022 · The antiferromagnetic interaction of CaMnBi 2 is strongly weakened in the Cu-doped crystals, with the transition temperature decreased from 260 to 85 K.
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