当前位置： SCI文献检索 > NATURE期刊下所有文献 > A BCS-like gap in the superconductor SmFeAsO0.85F0.15.

A BCS-like gap in the superconductor SmFeAsO0.85F0.15.

Abstract：

:Since the discovery of superconductivity in the high-transition-temperature (high-T(c)) copper oxides two decades ago, it has been firmly established that the CuO(2) plane is essential for superconductivity and gives rise to a host of other very unusual properties. A new family of superconductors with the general composition of LaFeAsO(1-x)F(x) has recently been discovered and the conspicuous lack of the CuO(2) planes raises the tantalizing question of a different pairing mechanism in these oxypnictides. The superconducting gap (its magnitude, structure, and temperature dependence) is intimately related to pairing. Here we report the observation of a single gap in the superconductor SmFeAsO(0.85)F(0.15) with T(c) = 42 K as measured by Andreev spectroscopy. The gap value of 2Delta = 13.34 +/- 0.3 meV gives 2Delta/k(B)T(c) = 3.68 (where k(B) is the Boltzmann constant), close to the Bardeen-Cooper-Schrieffer (BCS) prediction of 3.53. The gap decreases with temperature and vanishes at T(c) in a manner consistent with the BCS prediction, but dramatically different from that of the pseudogap behaviour in the copper oxide superconductors. Our results clearly indicate a nodeless gap order parameter, which is nearly isotropic in size across different sections of the Fermi surface, and are not compatible with models involving antiferromagnetic fluctuations, strong correlations, the t-J model, and the like, originally designed for the high-T(c) copper oxides.

journal_name

Nature

journal_title

Nature

authors

Chen TY,Tesanovic Z,Liu RH,Chen XH,Chien CL

doi

10.1038/nature07081

subject

Has Abstract

pub_date

2008-06-26 00:00:00

pages

1224-7

issue

7199

eissn

0028-0836

issn

1476-4687

pii

nature07081

journal_volume

453

pub_type

杂志文章

相关文献

NATURE文献大全
  • Change in pattern of ongoing cortical activity with auditory category learning.

    abstract：:Humans are able to classify novel items correctly by category; some other animals have also been shown to do this. During category learning, humans group perceptual stimuli by abstracting qualities from similarity relationships of their physical properties. Forming categories is fundamental to cognition and can be ind...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/35089076

    authors： Ohl FW,Scheich H,Freeman WJ

    更新日期：2001-08-16 00:00:00

  • Autocrine generation and requirement of BSF-2/IL-6 for human multiple myelomas.

    abstract：:Human B cell stimulatory factor 2 (BSF-2) was originally characterized and isolated as a T cell-derived factor that caused the terminal maturation of activated B cells to immunoglobulin-producing cells. Molecular cloning of the complementary DNA predicts that BSF-2 is a protein of relative molecular mass (Mr) 26,000 s...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/332083a0

    authors： Kawano M,Hirano T,Matsuda T,Taga T,Horii Y,Iwato K,Asaoku H,Tang B,Tanabe O,Tanaka H

    更新日期：1988-03-03 00:00:00

  • A new hominid from the Upper Miocene of Chad, Central Africa.

    abstract：:The search for the earliest fossil evidence of the human lineage has been concentrated in East Africa. Here we report the discovery of six hominid specimens from Chad, central Africa, 2,500 km from the East African Rift Valley. The fossils include a nearly complete cranium and fragmentary lower jaws. The associated fa...

    journal_title：Nature

    pub_type： 历史文章,杂志文章

    doi：10.1038/nature00879

    authors： Brunet M,Guy F,Pilbeam D,Mackaye HT,Likius A,Ahounta D,Beauvilain A,Blondel C,Bocherens H,Boisserie JR,De Bonis L,Coppens Y,Dejax J,Denys C,Duringer P,Eisenmann V,Fanone G,Fronty P,Geraads D,Lehmann T,Lihoreau F,

    更新日期：2002-07-11 00:00:00

  • Genome sequencing and analysis of Aspergillus oryzae.

    abstract：:The genome of Aspergillus oryzae, a fungus important for the production of traditional fermented foods and beverages in Japan, has been sequenced. The ability to secrete large amounts of proteins and the development of a transformation system have facilitated the use of A. oryzae in modern biotechnology. Although both...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature04300

    authors： Machida M,Asai K,Sano M,Tanaka T,Kumagai T,Terai G,Kusumoto K,Arima T,Akita O,Kashiwagi Y,Abe K,Gomi K,Horiuchi H,Kitamoto K,Kobayashi T,Takeuchi M,Denning DW,Galagan JE,Nierman WC,Yu J,Archer DB,Bennett JW,Bh

    更新日期：2005-12-22 00:00:00

  • Spread of activation and desensitisation in rod outer segments.

    abstract：:Visual transduction in vertebrate photoreceptors is thought to involve a diffusible internal transmitter which links photon absorption in disk membranes to the conductance decrease in the plasma membrane of the outer segment. The desensitisation of the photoresponse which occurs during and after illumination may also ...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/283085a0

    authors： McNaughton PA,Yau KW,Lamb TD

    更新日期：1980-01-03 00:00:00

  • Crucial HSP70 co-chaperone complex unlocks metazoan protein disaggregation.

    abstract：:Protein aggregates are the hallmark of stressed and ageing cells, and characterize several pathophysiological states. Healthy metazoan cells effectively eliminate intracellular protein aggregates, indicating that efficient disaggregation and/or degradation mechanisms exist. However, metazoans lack the key heat-shock p...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature14884

    authors： Nillegoda NB,Kirstein J,Szlachcic A,Berynskyy M,Stank A,Stengel F,Arnsburg K,Gao X,Scior A,Aebersold R,Guilbride DL,Wade RC,Morimoto RI,Mayer MP,Bukau B

    更新日期：2015-08-13 00:00:00

  • 'Trapped rainbow' storage of light in metamaterials.

    abstract：:Light usually propagates inside transparent materials in well known ways. However, recent research has examined the possibility of modifying the way the light travels by taking a normal transparent dielectric and inserting tiny metallic inclusions of various shapes and arrangements. As light passes through these struc...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature06285

    authors： Tsakmakidis KL,Boardman AD,Hess O

    更新日期：2007-11-15 00:00:00

  • Adjuvant-free IgG responses induced with antigen coupled to antibodies against class II MHC.

    abstract：:The generation of strong serological responses to protein antigens in experimental animals usually requires the use of potent adjuvants, most of which cannot be used in human or veterinary vaccines because of deleterious side effects. Attempting to circumvent this problem, we have assessed an adjuvant-free antigen-del...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/327059a0

    authors： Carayanniotis G,Barber BH

    更新日期：1987-05-07 00:00:00

  • Cell-intrinsic adaptation of lipid composition to local crowding drives social behaviour.

    abstract：:Cells sense the context in which they grow to adapt their phenotype and allow multicellular patterning by mechanisms of autocrine and paracrine signalling. However, patterns also form in cell populations exposed to the same signalling molecules and substratum, which often correlate with specific features of the popula...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature14429

    authors： Frechin M,Stoeger T,Daetwyler S,Gehin C,Battich N,Damm EM,Stergiou L,Riezman H,Pelkmans L

    更新日期：2015-07-02 00:00:00

  • Structure and elasticity of microtubule-associated protein tau.

    abstract：:Tau is one of the diverse group of microtubule-associated proteins that bind to microtubules and may thereby influence their structure and function. It occurs in the mammalian brain, mainly in axons, and is a component of the neurofibrillary tangles of Alzheimer's disease. Tau was recently sequenced, but there remains...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/334359a0

    authors： Lichtenberg B,Mandelkow EM,Hagestedt T,Mandelkow E

    更新日期：1988-07-28 00:00:00

  • Cdk1 is sufficient to drive the mammalian cell cycle.

    abstract：:Unicellular organisms such as yeasts require a single cyclin-dependent kinase, Cdk1, to drive cell division. In contrast, mammalian cells are thought to require the sequential activation of at least four different cyclin-dependent kinases, Cdk2, Cdk3, Cdk4 and Cdk6, to drive cells through interphase, as well as Cdk1 t...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature06046

    authors： Santamaría D,Barrière C,Cerqueira A,Hunt S,Tardy C,Newton K,Cáceres JF,Dubus P,Malumbres M,Barbacid M

    更新日期：2007-08-16 00:00:00

  • Inhibition of giant-planet formation by rapid gas depletion around young stars.

    abstract：:Although stars form from clouds of gas and dust, there are insignificant amounts of gas around ordinary (Sun-like) stars. This suggests that hydrogen and helium, the primary constituents of planets such as Jupiter and Saturn, are not easily retained in orbit as a star matures. The gas-giant planets in the Solar System...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/373494a0

    authors： Zuckerman B,Forveille T,Kastner JH

    更新日期：1995-02-09 00:00:00

  • A single amino acid of the cholecystokinin-B/gastrin receptor determines specificity for non-peptide antagonists.

    abstract：:The brain cholecystokinin-B/gastrin receptor (CCK-B/gastrin) has been implicated in mediating anxiety, panic attacks, satiety, and the perception of pain. The canine and human CCK-B/gastrin receptors share 90% amino-acid identity and have similar agonist affinities. These receptors can be selectively blocked by the no...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/362348a0

    authors： Beinborn M,Lee YM,McBride EW,Quinn SM,Kopin AS

    更新日期：1993-03-25 00:00:00

  • Intraprotein radical transfer during photoactivation of DNA photolyase.

    abstract：:Amino-acid radicals play key roles in many enzymatic reactions. Catalysis often involves transfer of a radical character within the protein, as in class I ribonucleotide reductase where radical transfer occurs over 35 A, from a tyrosyl radical to a cysteine. It is currently debated whether this kind of long-range tran...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/35014644

    authors： Aubert C,Vos MH,Mathis P,Eker AP,Brettel K

    更新日期：2000-06-01 00:00:00

  • Cloning and expression of a rat brain L-glutamate transporter.

    abstract：:Synaptic transmission of most vertebrate synapses is thought to be terminated by rapid transport of the neurotransmitter into presynaptic nerve terminals or neuroglia. L-Glutamate is the major excitatory transmitter in brain and its transport represents the mechanism by which it is removed from the synaptic cleft and ...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/360464a0

    authors： Pines G,Danbolt NC,Bjørås M,Zhang Y,Bendahan A,Eide L,Koepsell H,Storm-Mathisen J,Seeberg E,Kanner BI

    更新日期：1992-12-03 00:00:00

  • Gut intraepithelial T cells calibrate metabolism and accelerate cardiovascular disease.

    abstract：:The biochemical response to food intake must be precisely regulated. Because ingested sugars and fats can feed into many anabolic and catabolic pathways1, how our bodies handle nutrients depends on strategically positioned metabolic sensors that link the intrinsic nutritional value of a meal with intermediary metaboli...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/s41586-018-0849-9

    authors： He S,Kahles F,Rattik S,Nairz M,McAlpine CS,Anzai A,Selgrade D,Fenn AM,Chan CT,Mindur JE,Valet C,Poller WC,Halle L,Rotllan N,Iwamoto Y,Wojtkiewicz GR,Weissleder R,Libby P,Fernández-Hernando C,Drucker DJ,Nahrendorf

    更新日期：2019-02-01 00:00:00

  • Unprovability comes to machine learning.

    abstract：: ...

    journal_title：Nature

    pub_type： 新闻

    doi：10.1038/d41586-019-00012-4

    authors： Reyzin L

    更新日期：2019-01-01 00:00:00

  • Protein degradation and protection against misfolded or damaged proteins.

    abstract：:The ultimate mechanism that cells use to ensure the quality of intracellular proteins is the selective destruction of misfolded or damaged polypeptides. In eukaryotic cells, the large ATP-dependent proteolytic machine, the 26S proteasome, prevents the accumulation of non-functional, potentially toxic proteins. This pr...

    journal_title：Nature

    pub_type： 杂志文章,评审

    doi：10.1038/nature02263

    authors： Goldberg AL

    更新日期：2003-12-18 00:00:00

  • An allosteric mechanism of Rho-dependent transcription termination.

    abstract：:Rho is the essential RNA helicase that sets the borders between transcription units and adjusts transcriptional yield to translational needs in bacteria. Although Rho was the first termination factor to be discovered, the actual mechanism by which it reaches and disrupts the elongation complex (EC) is unknown. Here we...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature08669

    authors： Epshtein V,Dutta D,Wade J,Nudler E

    更新日期：2010-01-14 00:00:00

  • Author Correction: Observation of Bose-Einstein condensates in an Earth-orbiting research lab.

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

    journal_title：Nature

    pub_type： 已发布勘误

    doi：10.1038/s41586-020-2517-0

    authors： Aveline DC,Williams JR,Elliott ER,Dutenhoffer C,Kellogg JR,Kohel JM,Lay NE,Oudrhiri K,Shotwell RF,Yu N,Thompson RJ

    更新日期：2020-08-01 00:00:00

  • Homotypic fusion of ER membranes requires the dynamin-like GTPase atlastin.

    abstract：:Establishment and maintenance of proper architecture is essential for endoplasmic reticulum (ER) function. Homotypic membrane fusion is required for ER biogenesis and maintenance, and has been shown to depend on GTP hydrolysis. Here we demonstrate that Drosophila Atlastin--the fly homologue of the mammalian GTPase atl...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature08280

    authors： Orso G,Pendin D,Liu S,Tosetto J,Moss TJ,Faust JE,Micaroni M,Egorova A,Martinuzzi A,McNew JA,Daga A

    更新日期：2009-08-20 00:00:00

  • Cytokinesis failure generating tetraploids promotes tumorigenesis in p53-null cells.

    abstract：:A long-standing hypothesis on tumorigenesis is that cell division failure, generating genetically unstable tetraploid cells, facilitates the development of aneuploid malignancies. Here we test this idea by transiently blocking cytokinesis in p53-null (p53-/-) mouse mammary epithelial cells (MMECs), enabling the isolat...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature04217

    authors： Fujiwara T,Bandi M,Nitta M,Ivanova EV,Bronson RT,Pellman D

    更新日期：2005-10-13 00:00:00

  • Octopamine.

    abstract：:Octopamine is highly concentrated in neurones of several invertebrate species. Unlike in mammals, octopaminergic neurones in invertebrates are spatially separated from catecholaminergic neurons. In identified nerve cells of Aplysia, however, this amine coexists with other putative neurotransmitters. Octopamine is synt...

    journal_title：Nature

    pub_type： 杂志文章,评审

    doi：10.1038/265501a0

    authors： Axelrod J,Saavedra JM

    更新日期：1977-02-10 00:00:00

  • Truncated TrkB-T1 mediates neurotrophin-evoked calcium signalling in glia cells.

    abstract：:The neurotrophin receptor TrkB is essential for normal function of the mammalian brain. It is expressed in three splice variants. Full-length receptors (TrkB(FL)) possess an intracellular tyrosine kinase domain and are considered as those TrkB receptors that mediate the crucial effects of brain-derived neurotrophic fa...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature01983

    authors： Rose CR,Blum R,Pichler B,Lepier A,Kafitz KW,Konnerth A

    更新日期：2003-11-06 00:00:00

  • Late acquisition of mitochondria by a host with chimaeric prokaryotic ancestry.

    abstract：:The origin of eukaryotes stands as a major conundrum in biology. Current evidence indicates that the last eukaryotic common ancestor already possessed many eukaryotic hallmarks, including a complex subcellular organization. In addition, the lack of evolutionary intermediates challenges the elucidation of the relative ...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature16941

    authors： Pittis AA,Gabaldón T

    更新日期：2016-03-03 00:00:00

  • Solution structure of a minor and transiently formed state of a T4 lysozyme mutant.

    abstract：:Proteins are inherently plastic molecules, whose function often critically depends on excursions between different molecular conformations (conformers). However, a rigorous understanding of the relation between a protein's structure, dynamics and function remains elusive. This is because many of the conformers on its ...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature10349

    authors： Bouvignies G,Vallurupalli P,Hansen DF,Correia BE,Lange O,Bah A,Vernon RM,Dahlquist FW,Baker D,Kay LE

    更新日期：2011-08-21 00:00:00

  • Magnetic trapping of neutrons

    abstract：:Accurate measurement of the lifetime of the neutron (which is unstable to beta decay) is important for understanding the weak nuclear force and the creation of matter during the Big Bang. Previous measurements of the neutron lifetime have mainly been limited by certain systematic errors; however, these could in princi...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/47444

    authors： Huffman PR,Brome CR,Butterworth JS,Coakley KJ,Dewey MS,Dzhosyuk SN,Golub R,Greene GL,Habicht K,Lamoreaux SK,Mattoni CE,McKinsey DN,Wietfeldt FE,Doyle JM

    更新日期：2000-01-06 00:00:00

  • Downregulation of enkephalin-mediated inflammatory responses by CD10/neutral endopeptidase 24.11.

    abstract：:The antigen CD10 (common acute lymphoblastic leukaemia antigen), which is the zinc metalloprotease, neutral endopeptidase 24.11 (also known as NEP or 'enkephalinase'), is expressed by acute lymphoblastic leukaemias, normal lymphoid progenitors, mature polymorphonuclear leukocytes and certain nonhaematopoietic cells. C...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/347394a0

    authors： Shipp MA,Stefano GB,D'Adamio L,Switzer SN,Howard FD,Sinisterra J,Scharrer B,Reinherz EL

    更新日期：1990-09-27 00:00:00

  • Evolutionary origins of the avian brain.

    abstract：:Features that were once considered exclusive to modern birds, such as feathers and a furcula, are now known to have first appeared in non-avian dinosaurs. However, relatively little is known of the early evolutionary history of the hyperinflated brain that distinguishes birds from other living reptiles and provides th...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/nature12424

    authors： Balanoff AM,Bever GS,Rowe TB,Norell MA

    更新日期：2013-09-05 00:00:00

  • Electrically induced structure formation and pattern transfer

    abstract：:The wavelength of light represents a fundamental technological barrier to the production of increasingly smaller features on integrated circuits. New technologies that allow the replication of patterns on scales less than 100 nm need to be developed if increases in computing power are to continue at the present rate. ...

    journal_title：Nature

    pub_type： 杂志文章

    doi：10.1038/35002540

    authors： Schaffer E,Thurn-Albrecht T,Russell TP,Steiner U

    更新日期：2000-02-24 00:00:00