Abstract:
:We analyze the ferroelectric domain-wall induced negative capacitance (NC) effect in Metal-FE-Insulator-Metal (MFIM) and Metal-FE-Insulator-Semiconductor (MFIS) stacks through phase-field simulations by self-consistently solving time-dependent Ginzburg Landau equation, Poisson's equation and semiconductor charge equations. Considering Hf0.5Zr0.5O2 as the ferroelectric material, we study 180° ferroelectric domain formation in MFIM and MFIS stacks and their polarization switching characteristics. Our analysis signifies that the applied voltage-induced polarization switching via soft domain-wall displacement exhibits non-hysteretic characteristics. In addition, the change in domain-wall energy, due to domain-wall displacement, exhibits a long-range interaction and thus, leads to a non-homogeneous effective local negative permittivity in the ferroelectric. Such effects yield an average negative effective permittivity that further provides an enhanced charge response in the MFIM stack, compared to Metal-Insulator-Metal. Furthermore, we show that the domain-wall induced negative effective permittivity is not an intrinsic property of the ferroelectric material and therefore, is dependent on its thickness, the gradient energy coefficient and the in-plane permittivity of the underlying insulator. Similar to the MFIM stack, MFIS stack also exhibits an enhanced charge/capacitance response compared to Metal-Oxide-Semiconductor (MOS) capacitor. Simultaneously, the multi-domain state of the ferroelectric induces non-homogeneous potential in the underlying insulator and semiconductor layer. At low applied voltages, such non-homogeneity leads to the co-existence of electrons and holes in an undoped semiconductor. In addition, we show that with the ferroelectric layer being in the 180° multi-domain state, the minimum potential at the ferroelectric-dielectric interface and hence, the minimum surface potential in the semiconductor, does not exceed the applied voltage (in-spite of the local differential amplification and charge enhancement).
journal_name
Sci Repjournal_title
Scientific reportsauthors
Saha AK,Gupta SKdoi
10.1038/s41598-020-66313-1subject
Has Abstractpub_date
2020-06-23 00:00:00pages
10207issue
1issn
2045-2322pii
10.1038/s41598-020-66313-1journal_volume
10pub_type
杂志文章abstract::Chronic alcohol feeding causes lipid accumulation and apoptosis in the liver. This study investigated the role of bioactive lipid metabolites in alcohol-induced liver damage and tested the potential of targeting arachidonate 15-lipoxygenase (ALOX15) in treating alcoholic liver disease (ALD). Results showed that chroni...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-02759-0
更新日期:2017-08-21 00:00:00
abstract::Influenza virus evolves constantly in an unpredictable fashion, making it necessary to vaccinate people annually for effective prevention and control of influenza. In general, however, during the first wave of an influenza outbreak caused by a newly emerging virus strain, influenza morbidity and mortality have been ob...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep28729
更新日期:2016-06-29 00:00:00
abstract::Riverine and atmospheric inputs are often considered as the main terrestrial sources of dissolved inorganic nitrogen (DIN), phosphorus (DIP), and silicon (DSi) in the ocean. However, the fluxes of nutrients via submarine groundwater discharge (SGD) often exceed riverine inputs in different local and regional scale set...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-20806-2
更新日期:2018-02-05 00:00:00
abstract::Patients who undergo orthotopic liver transplantation often sustain acute kidney injury(AKI). The toll-like receptor 4(TLR4)/Nuclear factor-кB(NF-кB) pathway plays a role in AKI. Dexmedetomidine(Dex) has been shown to attenuate AKI. The current study aimed to determine whether liver transplantation-induced AKI is asso...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep16849
更新日期:2015-11-20 00:00:00
abstract::Plastic pollution is a rapidly worsening environmental problem, especially in oceanic habitats. Environmental pollution with microplastic particles is also causing food consumed by humans to be increasingly polluted, including table salts. Therefore, we present the first study which focuses only on table salt products...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-46417-z
更新日期:2019-07-12 00:00:00
abstract::Type 2 Diabetes (T2D) is increasing but the effectiveness of large-scale diabetes screening programmes is debated. We assessed associations between coverage of a national cardiovascular and diabetes risk assessment programme in England (NHS Health Check) and detection and management of incident cases of non-diabetic h...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-58033-3
更新日期:2020-01-27 00:00:00
abstract::The anisotropic transport of thermal neutron in heterogeneous porous media is of great research interests in many fields. In this paper, it is the first time that a new model based on micron X-ray computed tomography (CT) has been proposed to simultaneously consider both the separation of matrix and pore and the distr...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep27488
更新日期:2016-06-08 00:00:00
abstract::Heavy metal sequestration from industrial wastes and agricultural soils is a long-standing challenge. This is more critical for copper since copper pollution is hazardous both for the environment and for human health. In this study, we applied an integrated approach of Darwin's theory of natural selection with bacteri...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-76178-z
更新日期:2020-11-23 00:00:00
abstract::While researches have focused on drag reduction of various coated surfaces such as superhydrophobic structures and polymer brushes, the insights tso understand the fundamental physics of the laminar skin friction coefficient and the related drag reduction due to the formation of finite velocity at porous surfaces is s...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-17141-3
更新日期:2017-12-08 00:00:00
abstract::Animal coloration is a poorly-understood aspect of phenotypic variability. Here I expand initial studies of the colour gamut of birds by providing the first quantitative description of the colour variation of an entire avifauna: Australian landbirds (555 species). The colour of Australian birds occupies a small fracti...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep18514
更新日期:2015-12-18 00:00:00
abstract::Banana production is severely hindered by plant-parasitic nematodes in acidic, sandy soil. This study investigated the possibility of applying a novel fumigation agent based on ammonium bicarbonate as a strategy for controlling plant-parasitic nematodes under sealed conditions. Moreover, its effects on the nematode co...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep17597
更新日期:2015-12-01 00:00:00
abstract::We report on a combined photoluminescence imaging and atomic force microscopy study of single, isolated self-assembled InAs quantum dots. The motivation of this work is to determine an approach that allows to assess single quantum dots as candidates for quantum nanophotonic devices. By combining optical and scanning p...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-06566-5
更新日期:2017-07-24 00:00:00
abstract::Current knowledge about the overall and site-specific risk of malignancy associated with ankylosing spondylitis (AS) is inconsistent. We conducted a systematic review and meta-analysis to address this knowledge gap. Five databases (PubMed, EMBASE, Web of Science, the Cochrane library and the virtual health library) we...
journal_title:Scientific reports
pub_type: 杂志文章,meta分析,评审
doi:10.1038/srep32063
更新日期:2016-08-18 00:00:00
abstract::In the 70's, Robert May demonstrated that complexity creates instability in generic models of ecological networks having random interaction matrices A. Similar random matrix models have since been applied in many disciplines. Central to assessing stability is the "circular law" since it describes the eigenvalue distri...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-26486-2
更新日期:2018-05-29 00:00:00
abstract::Semisynthetic cephalosporins are widely used antibiotics currently produced by different chemical steps under harsh conditions, which results in a considerable amount of toxic waste. Biocatalytic synthesis by the cephalosporin acylase from Pseudomonas sp. strain N176 is a promising alternative. Despite intensive engin...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-48849-z
更新日期:2019-08-27 00:00:00
abstract::Vertebral fractures are a common burden amongst elderly and late middle aged people. Vertebral cross-sectional area (CSA) is a major determinant of vertebral strength and thus associated with vertebral fracture risk. Previous studies suggest that physical activity affects vertebral CSA. We aimed to investigate the rel...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep27844
更新日期:2016-06-10 00:00:00
abstract::Improvement of the critical current density (Jc) of superconducting wires/tapes is one of the key issues in the field of superconductivity applications. Here we report the fabrication of a silver-sheathed Ba1-xNaxFe2As2 (BaNa-122) superconducting tape by using a powder-in-tube technique and its superconducting propert...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-49363-y
更新日期:2019-09-10 00:00:00
abstract::In this study we analysed the acoustic properties and presence of haddock calls in the Arctic fjord Kongsfjorden (79° N-12° E, Svalbard Islands, Norway) in one year. Data were collected with three autonomous acoustic recorders located in the inner, middle, and outer parts of the fjord. The fjord is characterized by a ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-75415-9
更新日期:2020-10-26 00:00:00
abstract::Naturally occurring metals and metalloids [metal(loid)s] are essential for the physiological functioning of wildlife; however, environmental contamination by metal(loid) and plastic pollutants is a health hazard. Metal(loid)s may interact with plastic in the environment and there is mixed evidence about whether plasti...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-75024-6
更新日期:2020-10-22 00:00:00
abstract::Landau-Zener (LZ) transition has received renewed interest as an alternative approach to control single-qubit states. An LZ transition occurs when a system passes through an avoided crossing that arises from quantum mechanical coupling of two levels, taking the system to a coherent superposition of the two states. The...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-23468-2
更新日期:2018-04-03 00:00:00
abstract::Caloric restriction (CR) is known to promote health and longevity, likely via modification of the gut microbiota (GM). However, functional and metabolic changes induced in the GM during CR are still unidentified. Here, we investigated the short- and long-term effects of CR on the rat GM using a metaproteogenomic appro...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-33100-y
更新日期:2018-10-03 00:00:00
abstract::The newly sequenced mitochondrial genomes of 107 Asian swamp buffalo (Bubalus bubalis carabensis) allowed the reconstruction of the matrilineal divergence since ~900 Kya. Phylogenetic trees and Bayesian skyline plots suggest a role of the glacial periods in the demographic history of swamp buffalo. The ancestral swamp...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-04830-2
更新日期:2017-07-05 00:00:00
abstract::A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper. ...
journal_title:Scientific reports
pub_type: 已发布勘误
doi:10.1038/s41598-019-44437-3
更新日期:2019-06-05 00:00:00
abstract::Learning to successfully navigate social environments is a critical developmental goal, predictive of long-term wellbeing. However, little is known about how people learn to adjust to different social environments, and how this behaviour emerges across development. Here, we use a series of economic games to assess how...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-78546-1
更新日期:2020-12-10 00:00:00
abstract::The loss of retinal pericytes (RPCs) is a hallmark of early stage diabetic retinopathy (DR), but the mechanism underlying RPC death is unclear. Although it was postulated in previous studies using bovine RPCs that autoantibodies against RPCs might develop and induce RPC death, it is unknown whether autoantibodies agai...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep20341
更新日期:2016-02-03 00:00:00
abstract::This paper proposes a novel "micro-gun" structure for laser pulse propulsion. The "micro-bullets" (glass microspheres) are irradiated by a laser pulse with a 10 ns duration in a dynamic process. Experimental parameters such as the microsphere diameter and the laser pulse energy are varied to investigate their influenc...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-16400-7
更新日期:2017-11-24 00:00:00
abstract::RNA-based three-way junctions (3WJs) are naturally occurring structures found in many functional RNA molecules including rRNA, tRNA, snRNA and ribozymes. 3WJs are typically characterized as resulting from an RNA molecule folding back on itself in cis but could also form in trans when one RNA, for instance a microRNA b...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep45393
更新日期:2017-03-28 00:00:00
abstract::Breast cancer is the most frequently diagnosed malignancy among women, and triple-negative breast cancer (TNBC) is a highly aggressive subtype. Increasing evidence has shown that lncRNAs are involved in tumor growth, cell-cycle, and apoptosis through interactions with miRNAs or mRNAs. However, there is still limited d...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-51626-7
更新日期:2019-10-22 00:00:00
abstract::Capacitive, inductive and resistive loads of an ion-trap system, which can be modelled as LCR circuits, are important to know for building a high accuracy experiment. Accurate estimation of these loads is necessary for delivering the desired radio frequency (RF) signal to an ion trap via an RF resonator. Of particular...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-35234-5
更新日期:2018-11-15 00:00:00
abstract::Spotted seal (Phoca largha) is a critically endangered pinniped in China and South Korea. The conventional method to protect and maintain the P. largha population is to keep them captive in artificially controlled environments. However, little is known about the physiological differences between wild and captive P. la...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-75759-2
更新日期:2020-10-30 00:00:00