Abstract:
:The search for topological superconductors (TSCs) is one of the most urgent contemporary problems in condensed matter systems. TSCs are characterized by a full superconducting gap in the bulk and topologically protected gapless surface (or edge) states. Within each vortex core of TSCs, there exists the zero-energy Majorana bound states, which are predicted to exhibit non-Abelian statistics and to form the basis of the fault-tolerant quantum computation. To date, no stoichiometric bulk material exhibits the required topological surface states (TSSs) at the Fermi level (EF) combined with fully gapped bulk superconductivity. We report atomic-scale visualization of the TSSs of the noncentrosymmetric fully gapped superconductor PbTaSe2. Using quasi-particle scattering interference imaging, we find two TSSs with a Dirac point at E ≅ 1.0 eV, of which the inner TSS and the partial outer TSS cross EF, on the Pb-terminated surface of this fully gapped superconductor. This discovery reveals PbTaSe2 as a promising candidate for TSC.
journal_name
Sci Advjournal_title
Science advancesauthors
Guan SY,Chen PJ,Chu MW,Sankar R,Chou F,Jeng HT,Chang CS,Chuang TMdoi
10.1126/sciadv.1600894subject
Has Abstractpub_date
2016-11-23 00:00:00pages
e1600894issue
11issn
2375-2548pii
1600894journal_volume
2pub_type
杂志文章相关文献
Science Advances文献大全abstract::Strong coupling between a cavity and transition dipole moments in emitters leads to vacuum Rabi splitting. Researchers have not reported strong coupling between a single emitter and a dielectric cavity at room temperature until now. In this study, we investigated the photoluminescence (PL) spectra of colloidal quantum...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abb3095
更新日期:2020-11-20 00:00:00
abstract::Here, an integrated cascade nanozyme with a formulation of Pt@PCN222-Mn is developed to eliminate excessive reactive oxygen species (ROS). This nanozyme mimics superoxide dismutase by incorporation of a Mn-[5,10,15,20-tetrakis(4-carboxyphenyl)porphyrinato]-based metal-organic framework compound capable of transforming...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abb2695
更新日期:2020-07-17 00:00:00
abstract::Microfluidic devices fabricated via soft lithography have demonstrated compelling applications such as lab-on-a-chip diagnostics, DNA microarrays, and cell-based assays. These technologies could be further developed by directly integrating microfluidics with electronic sensors and curvilinear substrates as well as imp...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abc9846
更新日期:2020-10-09 00:00:00
abstract::Halide perovskites are promising materials for development in hot carrier (HC) solar cells, where the excess energy of above-bandgap photons is harvested before being wasted as heat to enhance device efficiency. Presently, HC separation and transfer processes at higher-energy states remain poorly understood. Here, we ...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aax3620
更新日期:2019-11-15 00:00:00
abstract::Weyl semimetals are of great interest because they provide the first realization of the Weyl fermion, exhibit exotic quantum anomalies, and host Fermi arc surface states. The separation between Weyl nodes of opposite chirality gives a measure of the robustness of the Weyl semimetal state. To exploit the novel phenomen...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.1600295
更新日期:2016-06-24 00:00:00
abstract::Wogonin and baicalein are bioactive flavones in the popular Chinese herbal remedy Huang-Qin (Scutellaria baicalensis Georgi). These specialized flavones lack a 4'-hydroxyl group on the B ring (4'-deoxyflavones) and induce apoptosis in a wide spectrum of human tumor cells in vitro and inhibit tumor growth in vivo in di...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.1501780
更新日期:2016-04-08 00:00:00
abstract::Black phosphorus quantum dots (BPQDs) are proposed as effective seed-like sites to modulate the nucleation and growth of CsPbI2Br perovskite crystalline thin layers, allowing an enhanced crystallization and remarkable morphological improvement. We reveal that the lone-pair electrons of BPQDs can induce strong binding ...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aay5661
更新日期:2020-04-10 00:00:00
abstract::N6-methyladenine (6mdA) is a widespread DNA modification in bacteria. More recently, 6mdA has also been characterized in mammalian DNA. However, measurements of 6mdA abundance and profiles are often very dissimilar between studies, even when performed on DNA from identical mammalian cell types. Using comprehensive bio...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aay3335
更新日期:2020-03-18 00:00:00
abstract::Nanoparticles have been extensively used for inflammation imaging and photodynamic therapy of cancer. However, the major translational barriers to most nanoparticle-based imaging and therapy applications are the limited depth of tissue penetration, inevitable requirement of external irradiation, and poor biocompatibil...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aat2953
更新日期:2019-01-09 00:00:00
abstract::Crop diversification required to meet demands for food security and industrial use is often challenged by breeding time and amenability of varieties to genome modification. Cassava is one such crop. Grown for its large starch-rich storage roots, it serves as a staple food and a commodity in the multibillion-dollar sta...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aat6086
更新日期:2018-09-05 00:00:00
abstract::Mesoscale turbulence in the ocean strongly affects the circulation, water mass formation, and transport of tracers. Little is known, however, about how mixing varies on climate timescales. We present the first time-resolved global dataset of lateral mesoscale eddy diffusivities at the ocean surface, obtained by applyi...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aav5014
更新日期:2019-01-23 00:00:00
abstract::The structure of many real-world systems is best captured by networks consisting of several interaction layers. Understanding how a multilayered structure of connections affects the synchronization properties of dynamical systems evolving on top of it is a highly relevant endeavor in mathematics and physics and has po...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.1601679
更新日期:2016-11-16 00:00:00
abstract::A growing body of empirical evidence is revealing the value of nature experience for mental health. With rapid urbanization and declines in human contact with nature globally, crucial decisions must be made about how to preserve and enhance opportunities for nature experience. Here, we first provide points of consensu...
journal_title:Science advances
pub_type: 杂志文章,评审
doi:10.1126/sciadv.aax0903
更新日期:2019-07-24 00:00:00
abstract::The control of product distribution in a multistep catalytic selective hydrogenation reaction is challenging. For instance, the deep hydrogenation of dimethyl oxalate (DMO) is inclined to proceed over Cu/SiO2 catalysts because of inevitable coexistence of Cu+ and Cu0, leading to hard acquisition of the preliminary hyd...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aau3275
更新日期:2018-12-21 00:00:00
abstract::Changes in structure and function of small muscular arteries play a major role in the pathophysiology of pulmonary hypertension, a burgeoning public health challenge. Improved anatomically mimetic in vitro models of these microvessels are urgently needed because nonhuman vessels and previous models do not accurately r...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aaz2598
更新日期:2020-03-25 00:00:00
abstract::In traditional models of heteroepitaxy, the substrate serves mainly as a crystalline template for the thin-film lattice, dictating the initial roughness of the film and the degree of coherent strain. Here, performing in situ surface x-ray diffraction during the heteroepitaxial growth of LaTiO3 on SrTiO3 (001), we find...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aav0764
更新日期:2019-04-12 00:00:00
abstract::The homotrimeric molecular chaperone Skp of Gram-negative bacteria facilitates the transport of outer membrane proteins across the periplasm. It has been unclear how its activity is modulated during its functional cycle. Here, we report an atomic-resolution characterization of the Escherichia coli Skp monomer-trimer t...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abc5822
更新日期:2020-10-21 00:00:00
abstract::In 2018-2019, New York City experienced the largest measles outbreak in the United States in nearly three decades. To identify key contributing factors, we modeled the transmission dynamics of this outbreak. Results indicate that delayed vaccination of 1- to 4-year-olds enabled the initial spread and that increased in...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aaz4037
更新日期:2020-05-27 00:00:00
abstract::V1-ATPase is an ATP-driven rotary motor that is composed of a ring-shaped A3B3 complex and a central DF shaft. The nucleotide-free A3B3 complex of Enterococcus hirae, composed of three identical A1B1 heterodimers, showed a unique asymmetrical structure, probably due to the strong binding of the N-terminal barrel domai...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aau8149
更新日期:2019-01-30 00:00:00
abstract::Injection-induced earthquakes pose a serious seismic hazard but also offer an opportunity to gain insight into earthquake physics. Currently used models relating the maximum magnitude of injection-induced earthquakes to injection parameters do not incorporate rupture physics. We develop theoretical estimates, validate...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aap7528
更新日期:2017-12-20 00:00:00
abstract::Cell lines are commonly used as cancer models. The tissue of origin provides context for understanding biological mechanisms and predicting therapy response. We therefore systematically examined whether cancer cell lines exhibit features matching the presumed cancer type of origin. Gene expression and DNA methylation ...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aba1862
更新日期:2020-07-01 00:00:00
abstract::Planarians exhibit traits of cephalization but are unique among bilaterians in that they ingest food by means of goal-directed movements of a trunk-positioned pharynx, following protrusion of the pharynx out of the body, raising the question of how planarians control such a complex set of body movements for achieving ...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aaz0882
更新日期:2020-04-08 00:00:00
abstract::Using a national longitudinal survey data set from the Higher Education Research Institute, this study tested whether students who identified as a sexual minority (for example, lesbian, gay, bisexual, or queer) were more or less likely to persist after 4 years in science, technology, engineering, and mathematics (STEM...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aao6373
更新日期:2018-03-14 00:00:00
abstract::Optical investigation and manipulation constitute the core of biological experiments. Here, we introduce a new borosilicate glass material that contains the rare-earth ion terbium(III) (Tb3+), which emits green fluorescence upon blue light excitation, similar to green fluorescent protein (GFP), and thus is widely comp...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abd2529
更新日期:2021-01-06 00:00:00
abstract::Local thermal magnetization fluctuations in Li-doped MnTe are found to increase its thermopower α strongly at temperatures up to 900 K. Below the Néel temperature (TN ~ 307 K), MnTe is antiferromagnetic, and magnon drag contributes αmd to the thermopower, which scales as ~T3. Magnon drag persists into the paramagnetic...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aat9461
更新日期:2019-09-13 00:00:00
abstract::Chiral fermions in solid state feature "Fermi arc" states, connecting the surface projections of the bulk chiral nodes. The surface Fermi arc is a signature of nontrivial bulk topology. Unconventional chiral fermions with an extensive Fermi arc traversing the whole Brillouin zone have been theoretically proposed in Co...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aaw9485
更新日期:2019-12-20 00:00:00
abstract::Glass-forming ability (GFA) is the ability of a liquid to avoid crystallization during cooling. Metal-organic frameworks (MOFs) are a new class of glass formers (1-3), with hitherto unknown dynamic and thermodynamic properties. We report the discovery of a new series of tetrahedral glass systems, zeolitic imidazolate ...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aao6827
更新日期:2018-03-09 00:00:00
abstract::Cheater viruses, also known as defective interfering viruses, cannot replicate on their own yet replicate faster than the wild type upon coinfection. While there is growing interest in using cheaters as antiviral therapeutics, the mechanisms underlying cheating have been rarely explored. During experimental evolution ...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.abb7990
更新日期:2020-08-21 00:00:00
abstract::Silicic volcanic activity has long been framed as either violently explosive or gently effusive. However, recent observations demonstrate that explosive and effusive behavior can occur simultaneously. Here, we propose that rhyolitic magma feeding subaerial eruptions generally fragments during ascent through the upper ...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.aba7940
更新日期:2020-09-23 00:00:00
abstract::The most abundant components of primitive meteorites (chondrites) are millimeter-sized glassy spherical chondrules formed by transient melting events in the solar protoplanetary disk. Using Pb-Pb dates of 22 individual chondrules, we show that primary production of chondrules in the early solar system was restricted t...
journal_title:Science advances
pub_type: 杂志文章
doi:10.1126/sciadv.1700407
更新日期:2017-08-09 00:00:00