Kitkaite NiTeSe, an Ambient‐Stable Layered Dirac Semimetal with Low‐Energy Type‐II Fermions with Application Capabilities in Spintronics and Optoelectronics
Sign Up to like & getrecommendations! Published in 2021 at "Advanced Functional Materials"
DOI: 10.1002/adfm.202106101
Abstract: The emergence of Dirac semimetals has stimulated growing attention, owing to the considerable technological potential arising from their peculiar exotic quantum transport related to their nontrivial topological states. Especially, materials showing type‐II Dirac fermions afford… read more here.
Keywords: dirac fermions; kitkaite nitese; spintronics optoelectronics; type dirac ... See more keywords
Ultrasensitive Self-Driven Terahertz Photodetectors Based on Low-Energy Type-II Dirac Fermions and Related Van der Waals Heterojunctions.
Sign Up to like & getrecommendations! Published in 2022 at "Small"
DOI: 10.1002/smll.202205329
Abstract: The exotic electronic properties of topological semimetals (TSs) have opened new pathways for innovative photonic and optoelectronic devices, especially in the highly pursuit terahertz (THz) band. However, in most cases Dirac fermions lay far above… read more here.
Keywords: energy type; dirac fermions; type dirac; low energy ... See more keywords
Qualitative analysis of magnetic waveguides for two-dimensional Dirac fermions
Sign Up to like & getrecommendations! Published in 2018 at "Annals of Physics"
DOI: 10.1016/j.aop.2018.05.021
Abstract: We focus on the confinement of two-dimensional Dirac fermions within the waveguides created by realistic magnetic fields. Understanding of their band structure is of our main concern. We provide easily applicable criteria, mostly depending only… read more here.
Keywords: qualitative analysis; two dimensional; dirac fermions; analysis magnetic ... See more keywords
A new two-dimensional carbon system as a potential Li-adsorbent and its isostructural nitrides with Dirac fermions
Sign Up to like & getrecommendations! Published in 2021 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2021.150892
Abstract: Abstract In this work, we have introduced defects like bond rotation and the sifting of atoms along the non-bonding direction in graphene to come up with a new dynamically stable crystal with a 5-4-4-5 ring… read more here.
Keywords: system; new two; carbon system; dirac fermions ... See more keywords
Massless Dirac fermions in semimetal HgCdTe
Sign Up to like & getrecommendations! Published in 2017 at "Solid State Communications"
DOI: 10.1016/j.ssc.2016.11.020
Abstract: Abstract Magneto-transport results obtained for the strained 100 nm thick Hg 1 − x CdxTe (x=0.135) layer grown by MBE on the CdTe/GaAs substrate are interpreted by the 8×8 kp model with the in-plane tensile strain.… read more here.
Keywords: massless dirac; fermions semimetal; semimetal hgcdte; dirac fermions ... See more keywords
Emergent Dirac fermions and broken symmetries in confined and deconfined phases of Z2 gauge theories
Sign Up to like & getrecommendations! Published in 2017 at "Nature Physics"
DOI: 10.1038/nphys4028
Abstract: Lattice gauge theories are notoriously hard to analyse at finite fermion density, due to the so-called fermion sign problem. A study now shows this can be circumvented for the case of Ising gauge theories. read more here.
Keywords: broken symmetries; emergent dirac; dirac fermions; symmetries confined ... See more keywords
Dirac fermions and flat bands in the ideal kagome metal FeSn
Sign Up to like & getrecommendations! Published in 2019 at "Nature Materials"
DOI: 10.1038/s41563-019-0531-0
Abstract: A kagome lattice of 3 d transition metal ions is a versatile platform for correlated topological phases hosting symmetry-protected electronic excitations and magnetic ground states. However, the paradigmatic states of the idealized two-dimensional kagome lattice—Dirac… read more here.
Keywords: fermions flat; dirac fermions; flat bands; kagome metal ... See more keywords
Gate-tunable third-order nonlinear optical response of massless Dirac fermions in graphene
Sign Up to like & getrecommendations! Published in 2017 at "Nature Photonics"
DOI: 10.1038/s41566-018-0175-7
Abstract: Graphene with massless Dirac fermions can have exceptionally strong third-order optical nonlinearities. Yet reported values of nonlinear optical susceptibilities for third-harmonic generation (THG), four-wave mixing (FWM) and self-phase modulation vary over six orders of magnitude.… read more here.
Keywords: graphene; third order; dirac fermions; massless dirac ... See more keywords
Manipulation of Dirac Fermions in Nanochain-Structured Graphene
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Physics Letters"
DOI: 10.1088/0256-307x/38/9/097101
Abstract: Graphene has afforded an ideal 2D platform for investigating a rich and fascinating behavior of Dirac fermions. Here, we develop a theoretical mechanism for manipulating the Dirac fermions in graphene, such as from type-I to… read more here.
Keywords: manipulation dirac; fermions nanochain; graphene; nanochain structured ... See more keywords
Linear dispersion of Dirac fermions in (Cd1–x–yZnxMny)3As2, х+y = 0.2, у = 0.02, 0.04, 0.06, 0.08 solid solutions
Sign Up to like & getrecommendations! Published in 2021 at "Physica Scripta"
DOI: 10.1088/1402-4896/ac3873
Abstract: Based on the results of the Shubnikov-de Haas oscillations study in single-crystalline diluted magnetic semiconductors (Cd1−x−yZnxMny)3As2 (CZMA) with х + y = 0.2 and Mn content (у = 0.02, 0.04, 0.06, 0.08) at temperatures T… read more here.
Keywords: cd1 yznxmny; yznxmny 3as2; dirac fermions; shubnikov haas ... See more keywords
Spatial and magnetic confinement of massless Dirac fermions
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.104.l161408
Abstract: Ya-Ning Ren, Qiang Cheng, Chao Yan, Ke Lv, Mo-Han Zhang, Qing-Feng Sun*, and Lin He* Center for Advanced Quantum Studies, Department of Physics, Beijing Normal University, Beijing, 100875, People’s Republic of China School of Science,… read more here.
Keywords: spatial magnetic; physics; magnetic confinement; dirac fermions ... See more keywords