Abstract:
:We report transport studies on the 5 nm thick Bi₂Se₃ topological insulator films which are grown via molecular beam epitaxy technique. The angle-resolved photoemission spectroscopy data show that the Fermi level of the system lies in the bulk conduction band above the Dirac point, suggesting important contribution of bulk states to the transport results. In particular, the crossover from weak antilocalization to weak localization in the bulk states is observed in the parallel magnetic field measurements up to 50 Tesla. The measured magneto-resistance exhibits interesting anisotropy with respect to the orientation of parallel magnetic field B// and the current I, signifying intrinsic spin-orbit coupling in the Bi₂Se₃ films. Our work directly shows the crossover of quantum interference effect in the bulk states from weak antilocalization to weak localization. It presents an important step toward a better understanding of the existing three-dimensional topological insulators and the potential applications of nano-scale topological insulator devices.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wang H,Liu H,Chang CZ,Zuo H,Zhao Y,Sun Y,Xia Z,He K,Ma X,Xie XC,Xue QK,Wang Jdoi
10.1038/srep05817subject
Has Abstractpub_date
2014-07-24 00:00:00pages
5817issn
2045-2322pii
srep05817journal_volume
4pub_type
杂志文章abstract::In this decade coherent X-ray diffraction imaging has been demonstrated to reveal internal structures of whole biological cells and organelles. However, the spatial resolution is limited to several tens of nanometers due to the poor scattering power of biological samples. The challenge is to recover correct phase info...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep08074
更新日期:2015-01-28 00:00:00
abstract::Tolmetin is a non-steroidal anti-inflammatory drug being used to decrease the level of hormones which are the reasons for pain, swelling, tiredness, and stiffness for osteoarthritis and rheumatoid arthritis cases. We evaluated its solubility in supercritical carbon dioxide (SC-CO2) with the aim of drug nanonization, c...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-76330-9
更新日期:2020-11-11 00:00:00
abstract::We propose a method to simulate spin models in trapped ions using a digital-analog approach, consisting in a suitable gate decomposition in terms of analog blocks and digital steps. In this way, we show that the quantum dynamics of an enhanced variety of spin models could be implemented with substantially less number ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep30534
更新日期:2016-07-29 00:00:00
abstract::Functional DNA sub-sequences and genome elements are spatially clustered through the genome just as keywords in literary texts. Therefore, some of the methods for ranking words in texts can also be used to compare different DNA sub-sequences. In analogy with the literary texts, here we claim that the distribution of d...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep41543
更新日期:2017-01-27 00:00:00
abstract::As part of an ongoing study of new insulin mimetic agents from medicinal plants, the 70% EtOH extract of Symplocos cochinchinensis was found to have a stimulatory effect on glucose uptake in 3T3-L1 adipocyte cells. The intensive targeted isolation of this active extract resulted in ten new hydroxyoleoside-type compoun...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-38013-4
更新日期:2019-02-19 00:00:00
abstract::rag1 -/- zebrafish have been employed in immunological research as a useful immunodeficient vertebrate model, but with only fragmentary evidence for the lack of functional adaptive immunity. rag1-null zebrafish exhibit differences from their human and murine counterparts in that they can be maintained without any spec...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-08000-2
更新日期:2017-08-08 00:00:00
abstract::In insects, the transition from juvenile development to the adult stage is controlled by juvenile hormone (JH) synthesized from the corpora allata (CA) glands. Whereas a JH-free period during the last juvenile instar triggers metamorphosis and the end of the growth period, the reappearance of this hormone after the im...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep40234
更新日期:2017-01-11 00:00:00
abstract::A new kind of magnetically-doped antiferromagnetic (AFM) topological insulators (TIs) with stoichiometry Bi1.09Gd0.06Sb0.85Te3 has been studied by angle-resolved photoemission spectroscopy (ARPES), superconducting magnetometry (SQUID) and X-ray magnetic circular dichroism (XMCD) with analysis of its electronic structu...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-41137-w
更新日期:2019-03-18 00:00:00
abstract::The commensal microbiome is known to influence a variety of host phenotypes. Microbiome profiling followed by differential abundance analysis has been established as an effective approach to study the mechanisms of host-microbiome interactions. However, it is challenging to interpret the collective functions of the re...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-78511-y
更新日期:2020-12-08 00:00:00
abstract::Regional differences in ion channel activity in the heart control the sequence of repolarization and may contribute to differences in contraction. Corticosteroids such as aldosterone or corticosterone increase the L-type Ca2+ current (ICaL) in the heart via the mineralocorticoid receptor (MR). Here, we investigate the...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-68308-4
更新日期:2020-07-14 00:00:00
abstract::Uveitis, the pathologic condition of inflammation of the uvea, frequently leads to severe vision loss and blindness. S100A8 is a calcium-binding protein which mainly expresses in granulocytes and monocytes and plays a prominent role in the regulation of inflammatory processes and immune response. Here, we determined t...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep36140
更新日期:2016-10-27 00:00:00
abstract::The Serra Gaúcha region is the most important temperate fruit-producing area in southern Brazil. Despite mealybugs (Hemiptera: Pseudococcidae) infesting several host plants in the region, there is a lack of information about the composition of species damaging different crops. A survey of mealybug species associated w...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-15983-5
更新日期:2017-11-16 00:00:00
abstract::Recent work reveals that the extinction of conditioned fear depends upon the interval between conditioning and extinction. Extinction training that takes place within minutes to hours after fear conditioning fails to produce a long-term extinction memory, a phenomenon known as the immediate extinction deficit (IED). N...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-46010-4
更新日期:2019-07-01 00:00:00
abstract::Rhegmatogenous retinal detachment (RRD) is an ophthalmic emergency, which usually requires prompt surgery to prevent further detachment and restore sensory function. Although several individual factors have been suggested, a systems level understanding of molecular pathomechanisms underlying this severe eye disorder i...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-80005-w
更新日期:2021-01-13 00:00:00
abstract::Free-living amoebae are well known for their role in controlling microbial community composition through grazing, but some groups, namely Acanthamoeba species, also frequently serve as hosts for bacterial symbionts. Here we report the first identification of a bacterial symbiont in the testate amoeba Cochliopodium. Th...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-03642-8
更新日期:2017-06-13 00:00:00
abstract::Excess nitrite (NO2-) concentrations in water supplies is considered detrimental to the environment and human health, and is associated with incidence of stomach cancer. In this work, the authors describe a nitrite detection system based on the synthesis of gold nanoparticles (AuNPs) on reduced graphene oxide (rGO) us...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-14584-6
更新日期:2017-10-27 00:00:00
abstract::Subsolid pulmonary nodules are commonly encountered in lung cancer screening and clinical routine. Compared to other nodule types, subsolid nodules are associated with a higher malignancy probability for which the size and mass of the nodule and solid core are important indicators. However, reliably measuring these ch...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-19101-3
更新日期:2018-01-12 00:00:00
abstract::Accidental introduction through ballast water and biofouling are currently the main factors responsible for spreading non-indigenous species in the marine realm. In the Southwestern Atlantic, two scleractinian corals, Tubastraea coccinea and T. tagusensis, have been introduced by opportunistic colonization in 1980 and...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-50442-3
更新日期:2019-09-27 00:00:00
abstract::Patients with chronic obstructive pulmonary disease (COPD) repeat acute exacerbations (AE). Global Initiative for Chronic Obstructive Lung Disease (GOLD) is only available for patients in stable phase. Currently, there is a lack of assessment and prediction methods for acute exacerbation of chronic obstructive pulmona...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-60042-1
更新日期:2020-02-20 00:00:00
abstract::In the fifty years since the postulation of Moore's Law, the increasing energy consumption in silicon electronics has motivated research into emerging devices. An attractive research direction is processing information via the phase of spin waves within magnonic-logic circuits, which function without charge transport ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-08114-7
更新日期:2017-08-11 00:00:00
abstract::In the present work, we introduce two new metrics i.e. hydrogen-bond strength and charge-transfer between the donor/acceptor water molecules as a measure of hydrogen-bond rearrangement dynamics. Further, we also employ a simple model based on energy flux through the donor-acceptor water pairs to quantify the extent of...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-35357-9
更新日期:2018-11-15 00:00:00
abstract::SR-BI is the main receptor for high density lipoproteins (HDL) and mediates the bidirectional transport of lipids, such as cholesterol and vitamin E, between these particles and cells. During early development, SR-BI is expressed in extraembryonic tissue, specifically in trophoblast giant cells in the parietal yolk sa...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-05422-w
更新日期:2017-07-12 00:00:00
abstract::We investigate theoretically the two-photon absorption (TPA) for circular graphene quantum dots (GQDs) with the edge of armchair and zigzag on the basis of electronic energy states obtained by solving the Dirac-Weyl equation numerically under finite difference method. The expressions for TPA cross section are derived ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep33260
更新日期:2016-09-15 00:00:00
abstract::Animals execute sensorimotor sequences to optimize performance of complex actions series. However, the sensory aspects of these sequences and their dynamic control are often poorly understood. We trained bats to fly to targets at different distances, and analysed their sensory behavior before and during flight to test...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-00543-8
更新日期:2017-03-28 00:00:00
abstract::Cells regulate their intracellular mRNA levels by using specific ribonucleases. Oligoribonuclease (ORN) is a 3'-5' exoribonuclease for small RNA molecules, important in RNA degradation and re-utilisation. However, there is no structural information on the ligand-binding form of ORNs. In this study, the crystal structu...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-39641-0
更新日期:2019-02-25 00:00:00
abstract::Bisphenol A (BPA) is one of the commonest Endocrine Disruptor Compounds worldwide. It interferes with vertebrate reproduction, possibly by inducing deregulation of epigenetic mechanisms. To determine its effects on female reproductive physiology and investigate whether changes in the expression levels of genes related...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep21982
更新日期:2016-02-25 00:00:00
abstract::Validation of imaging contrast agents, such as fluorescently labeled imaging antibodies, has been recognized as a critical challenge in clinical and preclinical studies. As the number of applications for imaging antibodies grows, these materials are increasingly being subjected to careful scrutiny. Antibody fluorescen...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep41819
更新日期:2017-02-02 00:00:00
abstract::The clinical application of dihydroartemisinin (DHA) has been hampered due to its poor water-solubility. To overcome this hurdle, we devised a novel polymer-drug conjugate, multiarm polyethylene glycol-dihydroartemisinin (PEG-DHA), made by linking DHA with multiarm polyethylene glycol. Herein, we investigated PEG-DHA ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep05871
更新日期:2014-07-29 00:00:00
abstract::Si and Ge nanocrystals in oxides are of a large interest for photo-effect applications due to the fine-tuning of the optical bandgap by quantum confinement in nanocrystals. In this work, dense Ge nanocrystals suitable for enhanced photoconduction were fabricated from 60% Ge in TiO2 amorphous layers by low temperature ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-23316-3
更新日期:2018-03-20 00:00:00
abstract::Endoluminal surgery for the treatment of colorectal neoplasia is typically carried out using electrocautery tools which imply limited precision and the risk of harm through collateral thermal damage to the adjacent healthy tissue. As a potential alternative, we present the successful colonic epithelial laser ablation ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-73349-w
更新日期:2020-11-20 00:00:00