2019
DOI: 10.1016/j.sna.2019.07.016
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Planar configuration of extraordinary magnetoresistance for 2D-material-based magnetic field sensors

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Cited by 14 publications
(5 citation statements)
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“…Optimizing the device geometry was further found to highly increase device performance where shaping the metallic inclusion as a symmetric Hall bar [14,32] or square [33] was shown to enhance the MR response by several orders of magnitude. However, to date, geometric optimization was done only on symmetric structures [2,14,[32][33][34][35][36][37][38][39][40]. These symmetric EMR devices produce large MR values with a symmetric magnetoresistance response where R(B) = R(−B) around zero magnetic field [13,15,19,32,33,41].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Optimizing the device geometry was further found to highly increase device performance where shaping the metallic inclusion as a symmetric Hall bar [14,32] or square [33] was shown to enhance the MR response by several orders of magnitude. However, to date, geometric optimization was done only on symmetric structures [2,14,[32][33][34][35][36][37][38][39][40]. These symmetric EMR devices produce large MR values with a symmetric magnetoresistance response where R(B) = R(−B) around zero magnetic field [13,15,19,32,33,41].…”
Section: Introductionmentioning
confidence: 99%
“…The symmetric behavior leads to the sensitivity [dR/dB] B→0 = 0, which is undesirable for detecting weak magnetic fields [40,42]. Asymmetric geometries in EMR devices can therefore provide a way to tune the device, beyond previous studies on inducing asymmetry in the magnetoresistance of EMR devices by changing the contact configuration [2,33,34,36,38,40,[42][43][44][45]. This forms an alternative approach where the asymmetries are directly built into the EMR device itself to form an asymmetric sensor response, independently of the contact location.…”
Section: Introductionmentioning
confidence: 99%
“…Nanomaterials such as graphene, silicene, germanene, nanotubes, and nanoparticles thanks to their novel intrinsic properties have attracted the attention of researchers from both academic and industrial sectors in the chemical, environmental, optoelectronic, and medical fields [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. An important place among them belongs to magnetite nanoparticles (Fe 3 O 4 ), which show application potential, especially in nanomedicine in magnetic resonance imaging, hyperthermia, targeted drug delivery, enzyme immobilization, cell labeling, separation and purification of biomolecules, and in enrichment of DNA [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”
Section: Introductionmentioning
confidence: 99%
“…The material requirements sparked an interest in studying the behavior of EMR in various high-mobility materials, including InSb [8,[12][13][14][15][16][17], InAs [18][19][20], GaAs [21][22][23][24] and graphene [25][26][27][28][29][30]. Beyond investigating different material platforms and material parameters, there has also been a strong interest in exploring various EMR geometries [2,[31][32][33][34][35][36][37][38][39][40][41]. Four of the key geometries explored for EMR are displayed in figure 2, which include the concentric circular devices, bar-shaped devices, the asymmetric off-center circular devices and more exotic multi-branched devices.…”
Section: Introductionmentioning
confidence: 99%