Contact effects in thin 3D-topological insulators: how does the current flow?

Abstract:

:The effect of different contact configurations (semi-infinite extended-channel, normal metal and ferromagnetic metal) on quantum transport through thin Bi2Se3 three-dimensional (3D) topological insulator (TI) slab (channel) has been investigated through Non-Equilibrium Green Function. The issue of contact dependent current flow and distribution across quintuple layers of 3D-TI has been addressed in this work and applied to expound the explanation for recent experimental work on electrical detection of spin-momentum locking on topological surface for long channel device. A theoretical model is propounded to develop a microscopic understanding of transport in 3D-TI in which contact type and magnetization concur with helical surface states of the TI channel to manifest seemingly counter-intuitive current distribution across layers. The quantum transport calculations for short channel devices with magnetic source and drain contacts postulate negative surface current for anti-phase magnetization whose axis is transverse to both current and quintuple layers. For in-phase magnetization at the two terminals, it is shown that observations can change fundamentally to result in anomalous current distribution. Such results are explained to stem from the confinement of 3D-TI between ferromagnetic contacts along the transport direction. A simple mechanism to validate topological insulators via quantum transport experiments has also been suggested.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Gupta G,Jalil MB,Liang G

doi

10.1038/srep09479

subject

Has Abstract

pub_date

2015-03-30 00:00:00

pages

9479

issn

2045-2322

pii

srep09479

journal_volume

5

pub_type

杂志文章
  • Assessment of Heterotrophic Growth Supported by Soluble Microbial Products in Anammox Biofilm using Multidimensional Modeling.

    abstract::Anaerobic ammonium oxidation (anammox) is known to autotrophically convert ammonium to dinitrogen gas with nitrite as the electron acceptor, but little is known about their released microbial products and how these are relative to heterotrophic growth in anammox system. In this work, we applied a mathematical model to...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/srep27576

    authors: Liu Y,Sun J,Peng L,Wang D,Dai X,Ni BJ

    更新日期:2016-06-07 00:00:00

  • Author Correction: Solution structure of extracellular loop of human β4 subunit of BK channel and its biological implication on ChTX sensitivity.

    abstract::An amendment to this paper has been published and can be accessed via a link at the top of the paper. ...

    journal_title:Scientific reports

    pub_type: 已发布勘误

    doi:10.1038/s41598-020-60956-w

    authors: Wang Y,Lan W,Yan Z,Gao J,Liu X,Wang S,Guo X,Wang C,Zhou H,Ding J,Cao C

    更新日期:2020-02-26 00:00:00

  • Sum uncertainty relations for arbitrary N incompatible observables.

    abstract::We formulate uncertainty relations for arbitrary N observables. Two uncertainty inequalities are presented in terms of the sum of variances and standard deviations, respectively. The lower bounds of the corresponding sum uncertainty relations are explicitly derived. These bounds are shown to be tighter than the ones s...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/srep14238

    authors: Chen B,Fei SM

    更新日期:2015-09-15 00:00:00

  • Individual differences in the attentional modulation of the human auditory brainstem response to speech inform on speech-in-noise deficits.

    abstract::People with normal hearing thresholds can nonetheless have difficulty with understanding speech in noisy backgrounds. The origins of such supra-threshold hearing deficits remain largely unclear. Previously we showed that the auditory brainstem response to running speech is modulated by selective attention, evidencing ...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-019-50773-1

    authors: Saiz-Alía M,Forte AE,Reichenbach T

    更新日期:2019-10-01 00:00:00

  • Adaptations of Interferon Regulatory Factor 3 with Transition from Terrestrial to Aquatic Life.

    abstract::Interferon regulatory factor 3 (IRF3) and IRF7 are closely related IRF members and the major factors for the induction of interferons, a key component in vertebrate innate immunity. However, there is limited knowledge regarding the evolution and adaptation of those IRFs to the environments. Two unique motifs in IRF3 a...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-020-61365-9

    authors: Angeletti M,Hsu WN,Majo N,Moriyama H,Moriyama EN,Zhang L

    更新日期:2020-03-11 00:00:00

  • An evidence-based knowledgebase of metastasis suppressors to identify key pathways relevant to cancer metastasis.

    abstract::Metastasis suppressor genes (MS genes) are genes that play important roles in inhibiting the process of cancer metastasis without preventing growth of the primary tumor. Identification of these genes and understanding their functions are critical for investigation of cancer metastasis. Recent studies on cancer metasta...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/srep15478

    authors: Zhao M,Li Z,Qu H

    更新日期:2015-10-21 00:00:00

  • A new genus and two new species of freshwater mussels (Unionidae) from western Indochina.

    abstract::The systematics of Oriental freshwater mussels (Bivalvia: Unionidae) is poorly known. Here, we present an integrative revision of the genus Trapezoideus Simpson, 1900 to further understanding of freshwater mussel diversity in the region. We demonstrate that Trapezoideus as currently circumscribed is non-monophyletic, ...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-019-39365-1

    authors: Konopleva ES,Pfeiffer JM,Vikhrev IV,Kondakov AV,Gofarov MY,Aksenova OV,Lunn Z,Chan N,Bolotov IN

    更新日期:2019-03-11 00:00:00

  • Aptamer-based Targeted Delivery of a G-quadruplex Ligand in Cervical Cancer Cells.

    abstract::AS1411 is a G-rich DNA oligonucleotide that functions as an aptamer of the protein nucleolin, found at high levels on the surface of cancer cells but not on the surface of normal cells. Herein, we have studied AS1411 as a supramolecular carrier for the delivery of an acridine-based G-quadruplex ligand, C8, to HeLa can...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-019-44388-9

    authors: Carvalho J,Paiva A,Cabral Campello MP,Paulo A,Mergny JL,Salgado GF,Queiroz JA,Cruz C

    更新日期:2019-05-28 00:00:00

  • Time-lapse imaging reveals highly dynamic structural maturation of postnatally born dentate granule cells in organotypic entorhino-hippocampal slice cultures.

    abstract::Neurogenesis of hippocampal granule cells (GCs) persists throughout mammalian life and is important for learning and memory. How newborn GCs differentiate and mature into an existing circuit during this time period is not yet fully understood. We established a method to visualize postnatally generated GCs in organotyp...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/srep43724

    authors: Radic T,Jungenitz T,Singer M,Beining M,Cuntz H,Vlachos A,Deller T,Schwarzacher SW

    更新日期:2017-03-03 00:00:00

  • Associations of maternal vitamin D, PTH and calcium with hypertensive disorders of pregnancy and associated adverse perinatal outcomes: Findings from the Born in Bradford cohort study.

    abstract::Vitamin D and parathyroid hormone (PTH) regulate mineral metabolism and are required to maintain calcium levels. Vitamin D deficiency is common, particularly during pregnancy, and has been associated with hypertensive disorders of pregnancy. We sought to determine whether maternal 25(OH)D, PTH and calcium concentratio...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-018-37600-9

    authors: Santorelli G,Whitelaw D,Farrar D,West J,Lawlor DA

    更新日期:2019-02-04 00:00:00

  • Variation in biosynthesis of an effective anticancer secondary metabolite, mahanine in Murraya koenigii, conditional on soil physicochemistry and weather suitability.

    abstract::Murraya koenigii (MK) leaf being a rich source of bioactive secondary metabolites has received inordinate attention in drug development research. Formation of secondary plant metabolite(s) in medicinal plants depends on several factors and in this study the cause of variation in bioavailability and content of a vital ...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-020-77113-y

    authors: Kandimalla R,Das M,Barge SR,Sarma PP,Koiri DJ,Devi A,Karki AK,Kumar A,Devi R,Pal BC,Talukdar NC,Samanta SK

    更新日期:2020-11-18 00:00:00

  • Complementary Role of Fibroblast Growth Factor 21 and Cytokeratin 18 in Monitoring the Different Stages of Nonalcoholic Fatty Liver Disease.

    abstract::Fibroblast growth factor 21 (FGF21) and cytokeratin 18 (CK18) were previously reported to be elevated in nonalcoholic fatty liver disease (NAFLD). We aim to analyze the differential roles of FGF21, cell apoptosis marker CK18 fragment M30 and total cell death marker CK18 M65ED in monitoring the different stages of NAFL...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-017-05257-5

    authors: Wu G,Li H,Fang Q,Zhang J,Zhang M,Zhang L,Wu L,Hou X,Lu J,Bao Y,Jia W

    更新日期:2017-07-11 00:00:00

  • Study of Structural stability and formation mechanisms in DSPC and DPSM liposomes: A coarse-grained molecular dynamics simulation.

    abstract::Liposomes or biological vesicles can be created from cholesterol, phospholipid, and water. Their stability is affected by their phospholipid composition which can influence disease treatment and drug delivery efficacy. In this study, the effect of phospholipid type on the formation and stability of liposomes using coa...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-020-58730-z

    authors: Hashemzadeh H,Javadi H,Darvishi MH

    更新日期:2020-02-04 00:00:00

  • Gastric cancer depends on aldehyde dehydrogenase 3A1 for fatty acid oxidation.

    abstract::The major source of ATP in cancer cells remains unclear. Here, we examined energy metabolism in gastric cancer cells and found increased fatty acid oxidation and increased expression of ALDH3A1. Metabolic analysis showed that lipid peroxidation by reactive oxygen species led to spontaneous production of 4-hydroxynonen...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-019-52814-1

    authors: Lee JS,Kim SH,Lee S,Kang JH,Lee SH,Cheong JH,Kim SY

    更新日期:2019-11-08 00:00:00

  • Nitrosative stress defences of the enterohepatic pathogenic bacterium Helicobacter pullorum.

    abstract::Helicobacter pullorum is an avian bacterium that causes gastroenteritis, intestinal bowel and hepatobiliary diseases in humans. Although H. pullorum has been shown to activate the mammalian innate immunity with release of nitric oxide (NO), the proteins that afford protection against NO and reactive nitrogen species (...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-017-10375-1

    authors: Parente MR,Forte E,Falabella M,Boneca IG,Teixeira M,Giuffrè A,Saraiva LM

    更新日期:2017-08-30 00:00:00

  • Rapamycin attenuates pathological hypertrophy caused by an absence of trabecular formation.

    abstract::Cardiac trabeculae are mesh-like muscular structures within ventricular walls. Subtle perturbations in trabeculation are associated with many congenital heart diseases (CHDs), and complete failure to form trabeculae leads to embryonic lethality. Despite the severe consequence of an absence of trabecular formation, the...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-018-26843-1

    authors: Fleming ND,Samsa LA,Hassel D,Qian L,Liu J

    更新日期:2018-06-05 00:00:00

  • Production of adeno-associated virus vectors for in vitro and in vivo applications.

    abstract::Delivering and expressing a gene of interest in cells or living animals has become a pivotal technique in biomedical research and gene therapy. Among viral delivery systems, adeno-associated viruses (AAVs) are relatively safe and demonstrate high gene transfer efficiency, low immunogenicity, stable long-term expressio...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-019-49624-w

    authors: Kimura T,Ferran B,Tsukahara Y,Shang Q,Desai S,Fedoce A,Pimentel DR,Luptak I,Adachi T,Ido Y,Matsui R,Bachschmid MM

    更新日期:2019-09-19 00:00:00

  • Synthesis of Thermoplastic Xylan-Lactide Copolymer with Amidine-Mediated Organocatalyst in Ionic Liquid.

    abstract::Ring-opening graft polymerization (ROGP) of L-Lactide (L-LA) is a practical method of altering the physical and chemical properties of lignocellulose. Previous studies have mainly investigated cellulose and tin-based catalysts, particularly of tin(II) 2-ethylhexanoate (Sn(oct)2), at high temperatures and reported low ...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-017-00464-6

    authors: Zhang X,Wang H,Liu C,Zhang A,Ren J

    更新日期:2017-04-03 00:00:00

  • Region specific Raman spectroscopy analysis of the femoral head reveals that trabecular bone is unlikely to contribute to non-traumatic osteonecrosis.

    abstract::Non-traumatic osteonecrosis (ON) of the femoral head is a common disease affecting a young population as the peak age of diagnosis is in the 40 s. The natural history of non-traumatic ON leads to a collapse of the femoral head requiring prosthetic replacement in a 60% of cases. Although trabecular bone involvement in ...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-017-00162-3

    authors: Pascart T,Falgayrac G,Migaud H,Quinchon JF,Norberciak L,Budzik JF,Paccou J,Cotten A,Penel G,Cortet B

    更新日期:2017-03-07 00:00:00

  • Laminin α2, α4, and α5 Chains Positively Regulate Migration and Survival of Oligodendrocyte Precursor Cells.

    abstract::In the developing central nervous system (CNS), oligodendrocyte precursor cells (OPCs) migrate along blood vessels and are widely distributed in the CNS. Meanwhile, OPCs require survival factors from the extracellular microenvironment. In other tissues, laminins, heterotrimetric (αβγ) extracellular matrix proteins, pr...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-019-56488-7

    authors: Suzuki N,Hyodo M,Hayashi C,Mabuchi Y,Sekimoto K,Onchi C,Sekiguchi K,Akazawa C

    更新日期:2019-12-27 00:00:00

  • Steady streaming as a method for drug delivery to the inner ear.

    abstract::The inner ear, or cochlea, is a fluid-filled organ housing the mechanosensitive hair cells. Sound stimulation is relayed to the hair cells through waves that propagate on the elastic basilar membrane. Sensorineural hearing loss occurs from damage to the hair cells and cannot currently be cured. Although drugs have bee...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-020-79946-z

    authors: Sumner L,Mestel J,Reichenbach T

    更新日期:2021-01-08 00:00:00

  • Spatial separation of catches in highly mixed fisheries.

    abstract::Mixed fisheries are the dominant type of fishery worldwide. Overexploitation in mixed fisheries occurs when catches continue for available quota species while low quota species are discarded. As EU fisheries management moves to count all fish caught against quota (the "landing obligation"), the challenge is to catch a...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-018-31881-w

    authors: Dolder PJ,Thorson JT,Minto C

    更新日期:2018-09-17 00:00:00

  • Action observation: the less-explored part of higher-order vision.

    abstract::Little is presently known about action observation, an important perceptual component of high-level vision. To investigate this aspect of perception, we introduce a two-alternative forced-choice task for observed manipulative actions while varying duration or signal strength by noise injection. We show that accuracy a...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/srep36742

    authors: Platonov A,Orban GA

    更新日期:2016-11-18 00:00:00

  • Aedes aegypti Odorant Binding Protein 22 selectively binds fatty acids through a conformational change in its C-terminal tail.

    abstract::Aedes aegypti is the primary vector for transmission of Dengue, Zika and chikungunya viruses. Previously it was shown that Dengue virus infection of the mosquito led to an in increased expression of the odorant binding protein 22 (AeOBP22) within the mosquito salivary gland and that siRNA mediated knockdown of AeOBP22...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-020-60242-9

    authors: Wang J,Murphy EJ,Nix JC,Jones DNM

    更新日期:2020-02-24 00:00:00

  • Happiness and the patterns of life: a study of geolocated tweets.

    abstract::The patterns of life exhibited by large populations have been described and modeled both as a basic science exercise and for a range of applied goals such as reducing automotive congestion, improving disaster response, and even predicting the location of individuals. However, these studies have had limited access to c...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/srep02625

    authors: Frank MR,Mitchell L,Dodds PS,Danforth CM

    更新日期:2013-01-01 00:00:00

  • Isogambogenic acid induces apoptosis-independent autophagic cell death in human non-small-cell lung carcinoma cells.

    abstract::To overcome drug resistance caused by apoptosis deficiency in patients with non-small cell lung carcinoma (NSCLC), there is a need to identify other means of triggering apoptosis-independent cancer cell death. We are the first to report that isogambogenic acid (iso-GNA) can induce apoptosis-independent autophagic cell...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/srep07697

    authors: Yang J,Zhou Y,Cheng X,Fan Y,He S,Li S,Ye H,Xie C,Wu W,Li C,Pei H,Li L,Wei Z,Peng A,Wei Y,Li W,Chen L

    更新日期:2015-01-09 00:00:00

  • Quantum Walks in Periodic and Quasiperiodic Fibonacci Fibers.

    abstract::Quantum walk is a key operation in quantum computing, simulation, communication and information. Here, we report for the first time the demonstration of quantum walks and localized quantum walks in a new type of optical fibers having a ring of cores constructed with both periodic and quasiperiodic Fibonacci sequences,...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-020-64065-6

    authors: Nguyen DT,Nguyen TA,Khrapko R,Nolan DA,Borrelli NF

    更新日期:2020-04-28 00:00:00

  • Determinants of PCR performance (Xpert MTB/RIF), including bacterial load and inhibition, for TB diagnosis using specimens from different body compartments.

    abstract::The determinants of Xpert MTB/RIF sensitivity, a widely used PCR test for the diagnosis of tuberculosis (TB) are poorly understood. We compared culture time-to-positivity (TTP; a surrogate of bacterial load), MTB/RIF TB-specific and internal positive control (IPC)-specific C(T) values, and clinical characteristics in ...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/srep05658

    authors: Theron G,Peter J,Calligaro G,Meldau R,Hanrahan C,Khalfey H,Matinyenya B,Muchinga T,Smith L,Pandie S,Lenders L,Patel V,Mayosi BM,Dheda K

    更新日期:2014-07-11 00:00:00

  • Time course of bilateral microglial activation in a mouse model of laser-induced glaucoma.

    abstract::Microglial activation is associated with glaucoma. In the model of unilateral laser-induced ocular hypertension (OHT), the time point at which the inflammatory process peaks remains unknown. Different time points (1, 3, 5, 8, and 15 d) were compared to analyze signs of microglial activation both in OHT and contralater...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-020-61848-9

    authors: Ramírez AI,de Hoz R,Fernández-Albarral JA,Salobrar-Garcia E,Rojas B,Valiente-Soriano FJ,Avilés-Trigueros M,Villegas-Pérez MP,Vidal-Sanz M,Triviño A,Ramírez JM,Salazar JJ

    更新日期:2020-03-17 00:00:00

  • High Sensitivity and Selectivity of AsP Sensor in Detecting SF6 Decomposition Gases.

    abstract::The sensing properties of monolayer arsenic phosphorus (AsP) for the adsorption of SF6, H2O, O2, and SF6 decomposition gases (SO2 and H2S) are theoretically investigated by the first-principle calculations. We calculate the adsorption energy, equilibrium distance, Mulliken charge transfer, and electron localization fu...

    journal_title:Scientific reports

    pub_type: 杂志文章

    doi:10.1038/s41598-018-30643-y

    authors: Jin W,Guofeng Y,Junjun X,Jianming L,Qing C,Dunjun C,Hai L,Rong Z,Youdou Z

    更新日期:2018-08-13 00:00:00