Search Results - (Author, Cooperation:Y. Xue)
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1Latest Papers from Table of Contents or Articles in PressMa, X., Bi, E., Huang, C., Lu, Y., Xue, G., Guo, X., Wang, A., Yang, M., Qian, J., Dong, C., Yi, Q.
Rockefeller University Press
Published 2018Staff ViewPublication Date: 2018-06-05Publisher: Rockefeller University PressPrint ISSN: 0022-1007Electronic ISSN: 1540-9538Topics: MedicineKeywords: Tumor Immunology, MetabolismPublished by: -
2Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-06-23Publisher: BMJ PublishingElectronic ISSN: 2044-6055Topics: MedicineKeywords: Open access, Health services researchPublished by: -
3Latest Papers from Table of Contents or Articles in PressA. Scally ; J. Y. Dutheil ; L. W. Hillier ; G. E. Jordan ; I. Goodhead ; J. Herrero ; A. Hobolth ; T. Lappalainen ; T. Mailund ; T. Marques-Bonet ; S. McCarthy ; S. H. Montgomery ; P. C. Schwalie ; Y. A. Tang ; M. C. Ward ; Y. Xue ; B. Yngvadottir ; C. Alkan ; L. N. Andersen ; Q. Ayub ; E. V. Ball ; K. Beal ; B. J. Bradley ; Y. Chen ; C. M. Clee ; S. Fitzgerald ; T. A. Graves ; Y. Gu ; P. Heath ; A. Heger ; E. Karakoc ; A. Kolb-Kokocinski ; G. K. Laird ; G. Lunter ; S. Meader ; M. Mort ; J. C. Mullikin ; K. Munch ; T. D. O'Connor ; A. D. Phillips ; J. Prado-Martinez ; A. S. Rogers ; S. Sajjadian ; D. Schmidt ; K. Shaw ; J. T. Simpson ; P. D. Stenson ; D. J. Turner ; L. Vigilant ; A. J. Vilella ; W. Whitener ; B. Zhu ; D. N. Cooper ; P. de Jong ; E. T. Dermitzakis ; E. E. Eichler ; P. Flicek ; N. Goldman ; N. I. Mundy ; Z. Ning ; D. T. Odom ; C. P. Ponting ; M. A. Quail ; O. A. Ryder ; S. M. Searle ; W. C. Warren ; R. K. Wilson ; M. H. Schierup ; J. Rogers ; C. Tyler-Smith ; R. Durbin
Nature Publishing Group (NPG)
Published 2012Staff ViewPublication Date: 2012-03-09Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; *Evolution, Molecular ; Female ; Gene Expression Regulation ; *Genetic Speciation ; Genetic Variation/genetics ; Genome/*genetics ; Genomics ; Gorilla gorilla/*genetics ; Humans ; Macaca mulatta/genetics ; Molecular Sequence Data ; Pan troglodytes/genetics ; Phylogeny ; Pongo/genetics ; Proteins/genetics ; Sequence Alignment ; Species Specificity ; Transcription, GeneticPublished by: -
4Latest Papers from Table of Contents or Articles in PressD. G. MacArthur ; S. Balasubramanian ; A. Frankish ; N. Huang ; J. Morris ; K. Walter ; L. Jostins ; L. Habegger ; J. K. Pickrell ; S. B. Montgomery ; C. A. Albers ; Z. D. Zhang ; D. F. Conrad ; G. Lunter ; H. Zheng ; Q. Ayub ; M. A. DePristo ; E. Banks ; M. Hu ; R. E. Handsaker ; J. A. Rosenfeld ; M. Fromer ; M. Jin ; X. J. Mu ; E. Khurana ; K. Ye ; M. Kay ; G. I. Saunders ; M. M. Suner ; T. Hunt ; I. H. Barnes ; C. Amid ; D. R. Carvalho-Silva ; A. H. Bignell ; C. Snow ; B. Yngvadottir ; S. Bumpstead ; D. N. Cooper ; Y. Xue ; I. G. Romero ; J. Wang ; Y. Li ; R. A. Gibbs ; S. A. McCarroll ; E. T. Dermitzakis ; J. K. Pritchard ; J. C. Barrett ; J. Harrow ; M. E. Hurles ; M. B. Gerstein ; C. Tyler-Smith
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-02-22Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Disease/genetics ; Gene Expression ; Gene Frequency ; *Genetic Variation ; *Genome, Human ; Humans ; Phenotype ; Polymorphism, Single Nucleotide ; Proteins/*genetics ; Selection, GeneticPublished by: -
5Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2011-07-19Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Archaeal Proteins/*chemistry ; Crystallography, X-Ray ; Membrane Proteins/chemistry ; Methanococcus/*chemistry ; *Models, Molecular ; Peptide Hydrolases/*chemistry ; Presenilin-1/chemistry ; Protein Structure, TertiaryPublished by: -
6Latest Papers from Table of Contents or Articles in PressA. R. Everitt ; S. Clare ; T. Pertel ; S. P. John ; R. S. Wash ; S. E. Smith ; C. R. Chin ; E. M. Feeley ; J. S. Sims ; D. J. Adams ; H. M. Wise ; L. Kane ; D. Goulding ; P. Digard ; V. Anttila ; J. K. Baillie ; T. S. Walsh ; D. A. Hume ; A. Palotie ; Y. Xue ; V. Colonna ; C. Tyler-Smith ; J. Dunning ; S. B. Gordon ; R. L. Smyth ; P. J. Openshaw ; G. Dougan ; A. L. Brass ; P. Kellam
Nature Publishing Group (NPG)
Published 2012Staff ViewPublication Date: 2012-03-27Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Alleles ; Amino Acid Sequence ; Animals ; Cytokines/immunology ; England/epidemiology ; Gene Deletion ; Humans ; Influenza A Virus, H1N1 Subtype/classification/growth & development/pathogenicity ; Influenza A Virus, H3N2 Subtype/classification/growth & development/pathogenicity ; Influenza A virus/classification/growth & development/*pathogenicity ; Influenza B virus/classification/growth & development/pathogenicity ; Influenza, Human/complications/epidemiology/mortality/virology ; Leukocytes/immunology ; Lung/pathology/virology ; Membrane Proteins/chemistry/deficiency/genetics/*metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Molecular Sequence Data ; Orthomyxoviridae Infections/complications/*mortality/pathology ; Pneumonia, Viral/etiology/pathology/prevention & control ; Polymorphism, Single Nucleotide/genetics ; RNA-Binding Proteins/chemistry/genetics/*metabolism ; Scotland/epidemiology ; Virus ReplicationPublished by: -
7Latest Papers from Table of Contents or Articles in PressY. Xue ; J. Prado-Martinez ; P. H. Sudmant ; V. Narasimhan ; Q. Ayub ; M. Szpak ; P. Frandsen ; Y. Chen ; B. Yngvadottir ; D. N. Cooper ; M. de Manuel ; J. Hernandez-Rodriguez ; I. Lobon ; H. R. Siegismund ; L. Pagani ; M. A. Quail ; C. Hvilsom ; A. Mudakikwa ; E. E. Eichler ; M. R. Cranfield ; T. Marques-Bonet ; C. Tyler-Smith ; A. Scally
American Association for the Advancement of Science (AAAS)
Published 2015Staff ViewPublication Date: 2015-04-11Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Adaptation, Physiological ; Animals ; Biological Evolution ; DNA Copy Number Variations ; Democratic Republic of the Congo ; Endangered Species ; Female ; *Genetic Variation ; *Genome ; Gorilla gorilla/classification/*genetics/physiology ; Homozygote ; *Inbreeding ; Linkage Disequilibrium ; Male ; Mutation ; Population Dynamics ; Rwanda ; Selection, Genetic ; Sequence Analysis, DNA ; Species Specificity ; Time FactorsPublished by: -
8Latest Papers from Table of Contents or Articles in PressP. Wang ; Y. Xue ; Y. Han ; L. Lin ; C. Wu ; S. Xu ; Z. Jiang ; J. Xu ; Q. Liu ; X. Cao
American Association for the Advancement of Science (AAAS)
Published 2014Staff ViewPublication Date: 2014-04-20Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Bone Marrow Cells/cytology ; Cell Differentiation ; Chromatin/metabolism ; Cytoplasm/metabolism ; Dendritic Cells/*cytology/*immunology/physiology ; Epigenesis, Genetic ; Gene Expression Regulation ; Histones/metabolism ; Humans ; Lymphocyte Activation ; Mice ; Monocytes/cytology ; Nucleic Acid Conformation ; Phosphorylation ; Protein Tyrosine Phosphatase, Non-Receptor Type 6/metabolism ; RNA, Long Noncoding/*metabolism ; STAT3 Transcription Factor/*metabolism ; T-Lymphocytes/immunologyPublished by: -
9Latest Papers from Table of Contents or Articles in PressV. M. Narasimhan ; K. A. Hunt ; D. Mason ; C. L. Baker ; K. J. Karczewski ; M. R. Barnes ; A. H. Barnett ; C. Bates ; S. Bellary ; N. A. Bockett ; K. Giorda ; C. J. Griffiths ; H. Hemingway ; Z. Jia ; M. A. Kelly ; H. A. Khawaja ; M. Lek ; S. McCarthy ; R. McEachan ; A. O'Donnell-Luria ; K. Paigen ; C. A. Parisinos ; E. Sheridan ; L. Southgate ; L. Tee ; M. Thomas ; Y. Xue ; M. Schnall-Levin ; P. M. Petkov ; C. Tyler-Smith ; E. R. Maher ; R. C. Trembath ; D. G. MacArthur ; J. Wright ; R. Durbin ; D. A. van Heel
American Association for the Advancement of Science (AAAS)
Published 2016Staff ViewPublication Date: 2016-03-05Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Adult ; *Consanguinity ; DNA Mutational Analysis ; Drug Prescriptions ; Exome/genetics ; Female ; Fertility ; Gene Knockout Techniques ; Genes, Lethal ; Genetic Loci ; Genome, Human ; Great Britain ; *Health ; Histone-Lysine N-Methyltransferase/*genetics ; Homologous Recombination ; Homozygote ; Humans ; Male ; Mothers ; Pakistan/ethnology ; PhenotypePublished by: -
10Latest Papers from Table of Contents or Articles in PressM. Raghavan ; M. Steinrucken ; K. Harris ; S. Schiffels ; S. Rasmussen ; M. DeGiorgio ; A. Albrechtsen ; C. Valdiosera ; M. C. Avila-Arcos ; A. S. Malaspinas ; A. Eriksson ; I. Moltke ; M. Metspalu ; J. R. Homburger ; J. Wall ; O. E. Cornejo ; J. V. Moreno-Mayar ; T. S. Korneliussen ; T. Pierre ; M. Rasmussen ; P. F. Campos ; B. Damgaard Pde ; M. E. Allentoft ; J. Lindo ; E. Metspalu ; R. Rodriguez-Varela ; J. Mansilla ; C. Henrickson ; A. Seguin-Orlando ; H. Malmstrom ; T. Stafford, Jr. ; S. S. Shringarpure ; A. Moreno-Estrada ; M. Karmin ; K. Tambets ; A. Bergstrom ; Y. Xue ; V. Warmuth ; A. D. Friend ; J. Singarayer ; P. Valdes ; F. Balloux ; I. Leboreiro ; J. L. Vera ; H. Rangel-Villalobos ; D. Pettener ; D. Luiselli ; L. G. Davis ; E. Heyer ; C. P. Zollikofer ; M. S. Ponce de Leon ; C. I. Smith ; V. Grimes ; K. A. Pike ; M. Deal ; B. T. Fuller ; B. Arriaza ; V. Standen ; M. F. Luz ; F. Ricaut ; N. Guidon ; L. Osipova ; M. I. Voevoda ; O. L. Posukh ; O. Balanovsky ; M. Lavryashina ; Y. Bogunov ; E. Khusnutdinova ; M. Gubina ; E. Balanovska ; S. Fedorova ; S. Litvinov ; B. Malyarchuk ; M. Derenko ; M. J. Mosher ; D. Archer ; J. Cybulski ; B. Petzelt ; J. Mitchell ; R. Worl ; P. J. Norman ; P. Parham ; B. M. Kemp ; T. Kivisild ; C. Tyler-Smith ; M. S. Sandhu ; M. Crawford ; R. Villems ; D. G. Smith ; M. R. Waters ; T. Goebel ; J. R. Johnson ; R. S. Malhi ; M. Jakobsson ; D. J. Meltzer ; A. Manica ; R. Durbin ; C. D. Bustamante ; Y. S. Song ; R. Nielsen ; E. Willerslev
American Association for the Advancement of Science (AAAS)
Published 2015Staff ViewPublication Date: 2015-07-23Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Americas ; Gene Flow ; Genomics ; History, Ancient ; Human Migration/*history ; Humans ; Indians, North American/genetics/*history ; Models, Genetic ; SiberiaPublished by: -
11Latest Papers from Table of Contents or Articles in PressF. Yuan ; H. Yang ; Y. Xue ; D. Kong ; R. Ye ; C. Li ; J. Zhang ; L. Theprungsirikul ; T. Shrift ; B. Krichilsky ; D. M. Johnson ; G. B. Swift ; Y. He ; J. N. Siedow ; Z. M. Pei
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-08-28Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Arabidopsis/genetics/*metabolism ; Arabidopsis Proteins/genetics/*metabolism ; Calcium/*metabolism ; Calcium Channels/genetics/*metabolism ; *Calcium Signaling ; Cell Membrane/metabolism ; Cytoplasm/metabolism ; Droughts ; HEK293 Cells ; Humans ; Membrane Proteins/genetics/metabolism ; *Osmotic Pressure ; Plant Roots/cytology/growth & development/metabolism ; Plant Transpiration ; Water/*metabolismPublished by: -
12Latest Papers from Table of Contents or Articles in PressT. Wang ; L. Liang ; Y. Xue ; P. F. Jia ; W. Chen ; M. X. Zhang ; Y. C. Wang ; H. J. Li ; W. C. Yang
Nature Publishing Group (NPG)
Published 2016Staff ViewPublication Date: 2016-02-11Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Arabidopsis/genetics/*metabolism/physiology ; Arabidopsis Proteins/chemistry/genetics/*metabolism ; Capsella/genetics/metabolism/physiology ; Cell Membrane/metabolism ; Mutation ; Ovule/metabolism ; Phenotype ; Phosphotransferases/chemistry/genetics/*metabolism ; Pollen Tube/genetics/growth & development/metabolism ; Protein Kinases/genetics/metabolism ; Protein Multimerization ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; Receptors, Cell Surface/chemistry/genetics/*metabolism ; Reproduction ; *Signal TransductionPublished by: -
13Latest Papers from Table of Contents or Articles in PressH. Ouyang ; Y. Xue ; Y. Lin ; X. Zhang ; L. Xi ; S. Patel ; H. Cai ; J. Luo ; M. Zhang ; Y. Yang ; G. Li ; H. Li ; W. Jiang ; E. Yeh ; J. Lin ; M. Pei ; J. Zhu ; G. Cao ; L. Zhang ; B. Yu ; S. Chen ; X. D. Fu ; Y. Liu ; K. Zhang
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-07-18Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Cell Differentiation ; Cell Lineage ; Corneal Diseases/*metabolism/*pathology ; Disease Models, Animal ; Epithelium, Corneal/*cytology/*metabolism/pathology ; Eye Proteins/genetics/*metabolism ; Homeodomain Proteins/genetics/*metabolism ; *Homeostasis ; Humans ; Limbus Corneae/cytology/metabolism ; Male ; Paired Box Transcription Factors/genetics/*metabolism ; Rabbits ; Repressor Proteins/genetics/*metabolism ; Signal Transduction ; Skin/cytology/metabolism/pathology ; Stem Cell Transplantation ; Stem Cells/cytology/metabolism ; Transcription Factors/metabolism ; Tumor Suppressor Proteins/metabolism ; Wnt Proteins/genetics/*metabolismPublished by: -
14Latest Papers from Table of Contents or Articles in PressD. Gurdasani ; T. Carstensen ; F. Tekola-Ayele ; L. Pagani ; I. Tachmazidou ; K. Hatzikotoulas ; S. Karthikeyan ; L. Iles ; M. O. Pollard ; A. Choudhury ; G. R. Ritchie ; Y. Xue ; J. Asimit ; R. N. Nsubuga ; E. H. Young ; C. Pomilla ; K. Kivinen ; K. Rockett ; A. Kamali ; A. P. Doumatey ; G. Asiki ; J. Seeley ; F. Sisay-Joof ; M. Jallow ; S. Tollman ; E. Mekonnen ; R. Ekong ; T. Oljira ; N. Bradman ; K. Bojang ; M. Ramsay ; A. Adeyemo ; E. Bekele ; A. Motala ; S. A. Norris ; F. Pirie ; P. Kaleebu ; D. Kwiatkowski ; C. Tyler-Smith ; C. Rotimi ; E. Zeggini ; M. S. Sandhu
Nature Publishing Group (NPG)
Published 2014Staff ViewPublication Date: 2014-12-04Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Africa ; Africa South of the Sahara ; Asia/ethnology ; Europe/ethnology ; Genetic Variation/*genetics ; Genetics, Medical/*trends ; Genome, Human/*genetics ; Genomics/*trends ; Humans ; Risk Factors ; Selection, Genetic/geneticsPublished by: -
15Latest Papers from Table of Contents or Articles in PressE. Khurana ; Y. Fu ; V. Colonna ; X. J. Mu ; H. M. Kang ; T. Lappalainen ; A. Sboner ; L. Lochovsky ; J. Chen ; A. Harmanci ; J. Das ; A. Abyzov ; S. Balasubramanian ; K. Beal ; D. Chakravarty ; D. Challis ; Y. Chen ; D. Clarke ; L. Clarke ; F. Cunningham ; U. S. Evani ; P. Flicek ; R. Fragoza ; E. Garrison ; R. Gibbs ; Z. H. Gumus ; J. Herrero ; N. Kitabayashi ; Y. Kong ; K. Lage ; V. Liluashvili ; S. M. Lipkin ; D. G. MacArthur ; G. Marth ; D. Muzny ; T. H. Pers ; G. R. Ritchie ; J. A. Rosenfeld ; C. Sisu ; X. Wei ; M. Wilson ; Y. Xue ; F. Yu ; E. T. Dermitzakis ; H. Yu ; M. A. Rubin ; C. Tyler-Smith ; M. Gerstein
American Association for the Advancement of Science (AAAS)
Published 2013Staff ViewPublication Date: 2013-10-05Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Binding Sites/genetics ; *Genetic Variation ; Genome, Human ; Genomics ; Humans ; Kruppel-Like Transcription Factors/metabolism ; Molecular Sequence Annotation/*methods ; Mutation ; Neoplasms/*genetics ; Polymorphism, Single Nucleotide ; Population/genetics ; RNA, Untranslated/genetics ; Selection, GeneticPublished by: -
16Articles: DFG German National LicensesHuang, Z. J. ; Chen, Feng ; Ren, Y. T. ; Xue, Y. Y. ; Chu, C. W. ; Miller, J. S.
[S.l.] : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: It has been demonstrated that the linear-chain charge-transfer salt, decamethylferrocenium tetracyanoethanide (DMeFc)(TCNE), is a ferromagnet with a transition temperature of ∼4.8 K. This low-temperature 3D ordering has been attributed to a strong intrachain and a weak interchain interaction. To study these interactions, we have determined the Tc up to 20 kbar by measuring the ac susceptibility χ at low frequency. Our results show that the Tc increases with pressure at a rate of ∼0.22 K/kbar, while the χ peak indicative of the ferromagnetic transition continues to decrease rapidly. A small peak was also detected above the main transition at pressures above 3 kbar. This new peak persists even after the pressure is removed. The result from dc magnetization suggests that this corresponds to a metamagnetic state. For the first time, we have observed pressure-induced phase-transition in this material.Type of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesGao, L. ; Xue, Y. Y. ; Hor, P. ; Chu, C. W.
[S.l.] : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: At the present time, there is a large amount of convergent experimental evidence pointing toward the existence of a vortex-glass state in the high temperature superconductor YBa2Cu3O7−δ in the presence of a high magnetic field, as predicted by Fisher1 and Fisher et al.2 However, the situation at low magnetic field is not so clear. The nature of the vortex state separating the Meissener state at low field and the vortex-glass state at very high field remains unsolved both theoretically and experimentally. To shed some light to this problem, we have measured the remnant magnetic moment relaxation of melt-textured bulk YBa2Cu3O7−δ samples in various magnetic fields from ∼10−4 to ∼300 s. Even at zero field, the time dependence of the relaxation follows the vortex-glass model prediction m(t)∝1/[ln(t)]1/μ but with a μ=1.4±0.2, contradicting the vortex-glass model. As the field is increased, the μ value decreases until it reaches a value of ∼0.2–0.3 above 1 T. The larger than one value of μ seems to point to a collective pinning behavior at low magnetic field.Type of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesLin, J. G. ; Xue, Y. Y. ; Chu, C. W. ; Cao, X. W. ; Ho, J. C.
[S.l.] : American Institute of Physics (AIP)
Published 1993Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The pressure effect on the superconducting transition temperature (dTc/dP) has been measured for Dy1−xPrxBa2Cu3O7−δ with x=0, 0.02, 0.05, 0.1, 0.15, 0.2, and 0.3. Although the Tc suppression by Pr is in a different fashion for Y1−xPrxBa2Cu3O7−δ and Dy1−xPrxBa2Cu3O7−δ, the dTc/dP is similar in these two systems, with respect to x. The measured dTc/dP is positive at small x but becomes negative for x≥0.2 which is associated with the pressure effect on the normal-state resistivity (1/R)(dR/dP). The positive (1/R)(dR/dP) at x≥0.2 indicates that the number of carriers is decreasing under pressure and it supports the picture of hole localization through the hybridization of Pr-4f and O-2p bands. The mechanical pressure has a negative effect on Tc for x≥0.2, but chemical pressure has a positive effect on Tc according to the results of chemical substitution. This suggests that the large R (=rare earth element) may possibly reduce the Pr-O distance, and increase the hybridization of Pr-4f and O-2p bands.Type of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesSchlatmann, R. ; Keppel, A. ; Xue, Y. ; Verhoeven, J. ; Marée, C. H. M. ; Habraken, F. H. P. M.
[S.l.] : American Institute of Physics (AIP)
Published 1996Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: To increase the x-ray optical contrast of Mo/Si multilayers, we study low energy hydrogen ion implantation of amorphous Si layers. Using elastic recoil detection and Rutherford backscattering spectrometry, we measure the result of hydrogen implantation on Si atomic density. We find a lowering of Si atomic density, and, thus, an enhancement of x-ray optical contrast, as a result of H implantation. We find that the Si atomic density saturates at a minimum of 64±5% of the crystalline value. We have also observed a minor smoothing effect of H+ ion bombardment. Combined with Kr+ ion bombardment, causing a very much larger smoothing of the Si surface, the atomic density is found to saturate at a minimum of 77±5% of the crystalline value. © 1996 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesChen, F. ; Gao, L. ; Meng, R. L. ; Xue, Y. Y. ; Chu, C. W.
[S.l.] : American Institute of Physics (AIP)
Published 1994Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The superconducting transition temperature Tc and its pressure dependence dTc/dP of HgBa2CaCu2O6+δ (Hg-1212) and HgBa2Ca2Cu3O8+δ (Hg-1223) were measured up to 17 kbar. Tc increases with pressure approximately linearly for both compounds before oxidation. However, the nonlinearity in the Tc-P correlation shows up after oxidation in both compounds. For Hg-1212, the average dTc/dP decreases as oxygen doping increases, while it increases in Hg-1223. These observations are in conflict with the modified pressure-induced charge-transfer model, but might be attributed to the possible existence of fine electronic structure. These observations suggest that a Tc much higher than 140 K might be achievable in Hg-1223 by means of higher physical or chemical pressure.Type of Medium: Electronic ResourceURL: