ChemInform Abstract: Magnetic Neutron Scattering Studies on the Fe‐Based Superconductor System Fe1+yTe1‐xSex

Wen, Jinsheng

doi:10.1002/chin.201547217

Cited by 2 publications

(2 citation statements)

References 190 publications

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“…The spin spectral weight, dE dq S(q, E), is now even larger, given that the ordered moment is already 2.5 µ B per Fe. 82 These observations further elucidate the microscopic physics. The Fermi surface in the paramagnetic state of the 11 (e.g.…”

Section: B Magnetism In the Iron Chalcogenidesmentioning

confidence: 60%

High-temperature superconductivity in iron pnictides and chalcogenides

2016

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Superconductivity develops in metals upon the formation of a coherent macroscopic quantum state of electron pairs. Iron pnictides and chalcogenides are materials that have high superconducting transition temperatures. In this Review, we describe the advances in the field that have led to higher superconducting transition temperatures in iron-based superconductors and the wide range of materials that form them. We summarize both the essential aspects of the normal state and the mechanism for superconductivity. We emphasize the degree of electron-electron correlations and their manifestation in properties of the normal state. We examine the nature of magnetism, analyse its role in driving the electronic nematicity, and discuss quantum criticality at the border of magnetism in the phase diagram. Finally, we review the amplitude and structure of the superconducting pairing, and survey the potential settings for optimizing superconductivity.In early 2008, the discovery of superconductivity with a transition temperature (T c ) of 26 K in an iron pnictide compound took the condensed matter and materials physics community by surprise 1 . It raised the prospect for high-temperature superconductivity beyond the copper-based materials, the only materials known up to then having a T c higher than 40

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Section: B Magnetism In the Iron Chalcogenidesmentioning

confidence: 60%

High-temperature superconductivity in iron pnictides and chalcogenides

2016

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“…We argue such divergence is not rare in low-dimensional systems. For example, DFT predicts checkerboard AFM order in monolayer FeSe/SrTiO 3 [16][17][18][19], but no experiment observes such order [20][21][22][23][24][25]. The observation of gapless Diraccone-like surface state in MnBi 2 Te 4 also hints the missing long-rang magnetic order in topmost MnTe layer [26][27][28][29].…”

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confidence: 99%

Stealth Majorana Zero Mode in a Trilayer Heterostructure MnTe/Bi2Te3/Fe(Te,Se)

Song¹,

Hao²

2023

Preprint

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Recent experiment reported the robust zero-energy states with strange properties in a trilayer heterostructure MnTe/Bi2Te3/Fe(Te,Se). Here, we give comprehensive understandings about the magnetic and electronic properties of the heterostructure, and propose ferromagnetic Mn-Bi antisite defects are generated in the topmost sublayer of Bi2Te3 and hidden below the MnTe layer. We further reveal the defect can induce two types of quasiparticles. One is Yu-Shiba-Rusinov state from defect itself, and another is Majorana zero mode from the superconducting phase domain wall induced by the defect. The two types of quasiparticles have very different response to magnetic field, temperature etc. The coexistence and mutual cooperation of both can explain experimental observations. Furthermore, we propose more simple heterostructure with superiority to generate and finely modulate Majorana zero modes.

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ChemInform Abstract: Magnetic Neutron Scattering Studies on the Fe‐Based Superconductor System Fe_1+yTe_1‐xSe_x

Abstract: Review: 218 refs.

Cited by 2 publications

References 190 publications

High-temperature superconductivity in iron pnictides and chalcogenides

High-temperature superconductivity in iron pnictides and chalcogenides

Stealth Majorana Zero Mode in a Trilayer Heterostructure MnTe/Bi2Te3/Fe(Te,Se)

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