scholarly journals Kondo effect with Weyl semimetal Fermi arcs

2018 ◽  
Vol 97 (4) ◽  
Author(s):  
Da Ma ◽  
Hua Chen ◽  
Haiwen Liu ◽  
X. C. Xie
Keyword(s):  
Kondo Effect ◽  
Weyl Semimetal ◽  
Fermi Arcs

scholarly journals Dissolution of topological Fermi arcs in a dirty Weyl semimetal

2017 ◽  
Vol 96 (20) ◽  
Author(s):  
Robert-Jan Slager ◽  
Vladimir Juričić ◽  
Bitan Roy
Keyword(s):  
Weyl Semimetal ◽  
Fermi Arcs

scholarly journals Edge superconductivity in multilayer WTe2 Josephson junction

2020 ◽  
Vol 7 (9) ◽  
pp. 1468-1475 ◽  
Author(s):  
Ce Huang ◽  
Awadhesh Narayan ◽  
Enze Zhang ◽  
Xiaoyi Xie ◽  
Linfeng Ai ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Josephson Effect ◽  
Condensed Matter ◽  
Type Ii ◽  
Edge States ◽  
Quantum Phases ◽  
Weyl Semimetal ◽  
Fermi Arcs ◽  
Topological System ◽  
Interference Measurements

Abstract WTe2, as a type-II Weyl semimetal, has 2D Fermi arcs on the (001) surface in the bulk and 1D helical edge states in its monolayer. These features have recently attracted wide attention in condensed matter physics. However, in the intermediate regime between the bulk and monolayer, the edge states have not been resolved owing to its closed band gap which makes the bulk states dominant. Here, we report the signatures of the edge superconductivity by superconducting quantum interference measurements in multilayer WTe2 Josephson junctions and we directly map the localized supercurrent. In thick WTe2 ($\sim 60{\rm{\ nm}})$, the supercurrent is uniformly distributed by bulk states with symmetric Josephson effect ($| {I_c^ + ( B )} | {=} | {I_c^ - ( B )} |\ $). In thin WTe2 (10 nm), however, the supercurrent becomes confined to the edge and its width reaches up to $1.4{\rm{\ \mu m\ }}$and exhibits non-symmetric behavior $| {I_c^ + ( B )} | \ne | {I_c^ - ( B )} |$. The ability to tune the edge domination by changing thickness and the edge superconductivity establishes WTe2 as a promising topological system with exotic quantum phases and a rich physics.

scholarly journals Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe2

2016 ◽  
Vol 12 (12) ◽  
pp. 1105-1110 ◽  
Author(s):  
Ke Deng ◽  
Guoliang Wan ◽  
Peng Deng ◽  
Kenan Zhang ◽  
Shijie Ding ◽  
...  
Keyword(s):  
Experimental Observation ◽  
Type Ii ◽  
Weyl Semimetal ◽  
Fermi Arcs

scholarly journals Orbital Fingerprint of Topological Fermi Arcs in the Weyl Semimetal TaP

2019 ◽  
Vol 122 (11) ◽  
Author(s):  
Chul-Hee Min ◽  
Hendrik Bentmann ◽  
Jennifer N. Neu ◽  
Philipp Eck ◽  
Simon Moser ◽  
...  
Keyword(s):  
Weyl Semimetal ◽  
Fermi Arcs

scholarly journals Observation of spin-polarized bands and domain-dependent Fermi arcs in polar Weyl semimetal MoTe2

2017 ◽  
Vol 95 (12) ◽  
Author(s):  
M. Sakano ◽  
M. S. Bahramy ◽  
H. Tsuji ◽  
I. Araya ◽  
K. Ikeura ◽  
...  
Keyword(s):  
Weyl Semimetal ◽  
Fermi Arcs ◽  
Spin Polarized

scholarly journals Observation of Fermi arcs in the type-II Weyl semimetal candidateWTe2

2016 ◽  
Vol 94 (12) ◽  
Author(s):  
Yun Wu ◽  
Daixiang Mou ◽  
Na Hyun Jo ◽  
Kewei Sun ◽  
Lunan Huang ◽  
...  
Keyword(s):  
Type Ii ◽  
Weyl Semimetal ◽  
Fermi Arcs

scholarly journals Topological surface Fermi arcs in the magnetic Weyl semimetal Co3Sn2S2

2018 ◽  
Vol 97 (23) ◽  
Author(s):  
Qiunan Xu ◽  
Enke Liu ◽  
Wujun Shi ◽  
Lukas Muechler ◽  
Jacob Gayles ◽  
...  
Keyword(s):  
Weyl Semimetal ◽  
Fermi Arcs ◽  
Topological Surface

scholarly journals Searching for topological Fermi arcs via quasiparticle interference on a type-II Weyl semimetal MoTe2

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Davide Iaia ◽  
Guoqing Chang ◽  
Tay-Rong Chang ◽  
Jin Hu ◽  
Zhiqiang Mao ◽  
...  
Keyword(s):  
Type Ii ◽  
Quasiparticle Interference ◽  
Weyl Semimetal ◽  
Fermi Arcs

scholarly journals Kondo physics in antiferromagnetic Weyl semimetal Mn3+xSn1−x films

2020 ◽  
Vol 6 (35) ◽  
pp. eabc1977
Author(s):  
Durga Khadka ◽  
T. R. Thapaliya ◽  
Sebastian Hurtado Parra ◽  
Xingyue Han ◽  
Jiajia Wen ◽  
...  
Keyword(s):  
Kondo Effect ◽  
Energy Gap ◽  
Strongly Correlated ◽  
Strong Correlations ◽  
Strong Electron ◽  
Experimental Systems ◽  
Weyl Semimetal ◽  
Hall Effects ◽  
Kondo Physics ◽  
Gap Opening

Topology and strong electron correlations are crucial ingredients in emerging quantum materials, yet their intersection in experimental systems has been relatively limited to date. Strongly correlated Weyl semimetals, particularly when magnetism is incorporated, offer a unique and fertile platform to explore emergent phenomena in novel topological matter and topological spintronics. The antiferromagnetic Weyl semimetal Mn3Sn exhibits many exotic physical properties such as a large spontaneous Hall effect and has recently attracted intense interest. In this work, we report synthesis of epitaxial Mn3+xSn1−x films with greatly extended compositional range in comparison with that of bulk samples. As Sn atoms are replaced by magnetic Mn atoms, the Kondo effect, which is a celebrated example of strong correlations, emerges, develops coherence, and induces a hybridization energy gap. The magnetic doping and gap opening lead to rich extraordinary properties, as exemplified by the prominent DC Hall effects and resonance-enhanced terahertz Faraday rotation.

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