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  • 1
    Online Resource
    Online Resource
    Magnetic Field-Tuned Quantum Criticality in the Metallic Ruthenate Sr 3 Ru 2 O 7
    American Association for the Advancement of Science (AAAS) ; 2001
    In:  Science Vol. 294, No. 5541 ( 2001-10-12), p. 329-332
    Details
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 294, No. 5541 ( 2001-10-12), p. 329-332
    Abstract: The concept of quantum criticality is proving to be central to attempts to understand the physics of strongly correlated electrons. Here, we argue that observations on the itinerant metamagnet Sr 3 Ru 2 O 7 represent good evidence for a new class of quantum critical point, arising when the critical end point terminating a line of first-order transitions is depressed toward zero temperature. This is of interest both in its own right and because of the convenience of having a quantum critical point for which the tuning parameter is the magnetic field. The relationship between the resultant critical fluctuations and novel behavior very near the critical field is discussed.
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    URL: Article
    DOI: 10.1126/science.1063539
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2001
    detail.hit.zdb_id: 128410-1
    detail.hit.zdb_id: 2066996-3
    detail.hit.zdb_id: 2060783-0
    SSG: 11
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  • 2
    Online Resource
    Online Resource
    Infrared properties of electron-doped cuprates: Tracking normal-state gaps and quantum critical behavior in Pr 2 − x Ce x CuO 4
    IOP Publishing ; 2005
    In:  Europhysics Letters (EPL) Vol. 70, No. 2 ( 2005-04), p. 225-231
    Details
    In: Europhysics Letters (EPL), IOP Publishing, Vol. 70, No. 2 ( 2005-04), p. 225-231
    Type of Medium: Online Resource
    ISSN: 0295-5075 , 1286-4854
    URL: Article
    DOI: 10.1209/epl/i2004-10480-2
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2005
    detail.hit.zdb_id: 1465366-7
    detail.hit.zdb_id: 165776-8
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  • 3
    Online Resource
    Online Resource
    Interaction of fibronectin with collagen: age-specific defect in the biological activity of human fibroblast fibronectin.
    Proceedings of the National Academy of Sciences ; 1983
    In:  Proceedings of the National Academy of Sciences Vol. 80, No. 15 ( 1983-08), p. 4747-4751
    Details
    In: Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 80, No. 15 ( 1983-08), p. 4747-4751
    Abstract: Fibronectins isolated fro early-passage and late-passage (in vitro aged) human fibroblasts were shown to differ in their ability to support cell adhesion and to influence cell morphology. Because fibroblast adhesion requires interactions between fibronectin, the cell surface, and the component of the extracellular matrix, we examined those functions in isolated cellular fibronectin. In comparison to fibronectin isolated from early-passage cells, fibronectin from late-passage cells bound poorly to native collagen types I and II. No differences were observed in the binding of the two fibronectins to denatured collagen. The binding of both fibronectins to native collagen was similarly promoted by heparin. Cell binding activity was evaluated by using a Boyden chamber assay to measure chemotaxis in response to either fibronectin. No differences were detected in cell binding. Comparisons of molecular weights by NaDodSO4/polyacrylamide gel electrophoresis reveals that fibronectin from late-passage cells is larger than that from early-passage cells. That difference is observed both in fibronectins isolated from conditioned media and in fibronectins isolated from the cell layer. These data support the hypothesis that late-passage cells produce a structurally and functionally distinct fibronectin. The defective binding to native collagen may account for some aspects of the aged phenotype.
    Type of Medium: Online Resource
    ISSN: 0027-8424 , 1091-6490
    URL: Article
    DOI: 10.1073/pnas.80.15.4747
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: Proceedings of the National Academy of Sciences
    Publication Date: 1983
    detail.hit.zdb_id: 209104-5
    detail.hit.zdb_id: 1461794-8
    SSG: 11
    SSG: 12
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  • 4
    Online Resource
    Online Resource
    Advances in the Physics of High-Temperature Superconductivity
    American Association for the Advancement of Science (AAAS) ; 2000
    In:  Science Vol. 288, No. 5465 ( 2000-04-21), p. 468-474
    Details
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 288, No. 5465 ( 2000-04-21), p. 468-474
    Abstract: The high-temperature copper oxide superconductors are of fundamental and enduring interest. They not only manifest superconducting transition temperatures inconceivable 15 years ago, but also exhibit many other properties apparently incompatible with conventional metal physics. The materials expand our notions of what is possible, and compel us to develop new experimental techniques and theoretical concepts. This article provides a perspective on recent developments and their implications for our understanding of interacting electrons in metals.
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    URL: Article
    DOI: 10.1126/science.288.5465.468
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 2000
    detail.hit.zdb_id: 128410-1
    detail.hit.zdb_id: 2066996-3
    detail.hit.zdb_id: 2060783-0
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  • 5
    Online Resource
    Online Resource
    Comment on “Quantum Griffiths effects in metallic systems” by A. H. Castro Neto and B. A. Jones
    IOP Publishing ; 2005
    In:  Europhysics Letters (EPL) Vol. 72, No. 6 ( 2005-12), p. 1052-1053
    Details
    In: Europhysics Letters (EPL), IOP Publishing, Vol. 72, No. 6 ( 2005-12), p. 1052-1053
    Type of Medium: Online Resource
    ISSN: 0295-5075 , 1286-4854
    URL: Article
    DOI: 10.1209/epl/i2005-10345-2
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2005
    detail.hit.zdb_id: 1465366-7
    detail.hit.zdb_id: 165776-8
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  • 6
    Online Resource
    Online Resource
    Incorporation of cellular and plasma fibronectins into smooth muscle cell extracellular matrix in vitro.
    Proceedings of the National Academy of Sciences ; 1985
    In:  Proceedings of the National Academy of Sciences Vol. 82, No. 9 ( 1985-05), p. 2746-2750
    Details
    In: Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 82, No. 9 ( 1985-05), p. 2746-2750
    Abstract: Fibronectins isolated from the conditioned medium produced by cultures of undifferentiated (monolayer) and differentiated (nodular) swine vascular smooth muscle cells are similar but not identical. In general, the nodular-cell fibronectin has a smaller molecular mass than monolayer-cell fibronectin and appears to lack the COOH-terminal interchain disulfide linkage. We studied the incorporation of cellular and plasma fibronectins into the cell layer. Smooth muscle cells bound 2.5 times more monolayer-cell fibronectin than nodular-cell fibronectin. Polypeptide fragments of human plasma fibronectin were used as a model system to investigate fibronectin incorporation into the cell layer. Only intact molecules were incorporated into the cell layer and subsequently organized into fibers. Polypeptide fragments of molecular mass 205 kDa and 185 kDa were not incorporated even though they retained the collagen-, cell-, and heparin-binding regions. Incorporation appears to require an activity associated with either the NH2-terminal or COOH-terminal domains. We propose that fibronectin activity is lost during differentiation of smooth muscle cells.
    Type of Medium: Online Resource
    ISSN: 0027-8424 , 1091-6490
    URL: Article
    DOI: 10.1073/pnas.82.9.2746
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: Proceedings of the National Academy of Sciences
    Publication Date: 1985
    detail.hit.zdb_id: 209104-5
    detail.hit.zdb_id: 1461794-8
    SSG: 11
    SSG: 12
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  • 7
    Online Resource
    Online Resource
    Human lymphoblastoid cell variants defective in cell-cell adhesion.
    Proceedings of the National Academy of Sciences ; 1979
    In:  Proceedings of the National Academy of Sciences Vol. 76, No. 6 ( 1979-06), p. 2838-2842
    Details
    In: Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 76, No. 6 ( 1979-06), p. 2838-2842
    Abstract: Adhesion mutants were selected from a human lymphoblastoid cell line. Initially, cells were selected on the basis of survival in serum-free medium. Subclones that grow as single cells rather than macroscopic aggregates were selected from the serum-independent variant. The defect in cell-cell adhesion is stable over many generations and is not corrected by growth in serum or the presence of serum in the culture medium. Analysis of mixed cultures composed of adhesive cells and nonadhesive cells indicates that the two cell types do not interact to form mixed aggregations. Furthermore, those results suggest that the adhesion-deficient phenotype does not result from the production of a transferable inhibitor. In a previous study [Whipple, A.P., Dalvin, M. & Millis, A.J.T. (1978) Exp. Cell Res. 116, 457-461], we found that the growth rate in serum-containing medium is identical for the two classes of cells. This suggests that cell-cell adhesion is not a critical factor in the growth of these cells.
    Type of Medium: Online Resource
    ISSN: 0027-8424 , 1091-6490
    URL: Article
    DOI: 10.1073/pnas.76.6.2838
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: Proceedings of the National Academy of Sciences
    Publication Date: 1979
    detail.hit.zdb_id: 209104-5
    detail.hit.zdb_id: 1461794-8
    SSG: 11
    SSG: 12
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  • 8
    Online Resource
    Online Resource
    Superconductivity and the c Axis Spectral Weight of High- T c Superconductors
    American Association for the Advancement of Science (AAAS) ; 1999
    In:  Science Vol. 285, No. 5431 ( 1999-08-20), p. 1241-1244
    Details
    In: Science, American Association for the Advancement of Science (AAAS), Vol. 285, No. 5431 ( 1999-08-20), p. 1241-1244
    Abstract: The temperature dependence of the c axis spectral weight (frequency integral of the interplane conductivity) of high transition temperature (high- T c ) superconductors is shown to be a probe of thermal and quantal fluctuations of the phase of the superconducting order parameter. The behavior of underdoped cuprates is shown to be a natural consequence of superconducting pairing without long-ranged phase coherence. Very underdoped cuprates are found to have strong phase fluctuations, even for temperatures much less than the transition temperature.
    Type of Medium: Online Resource
    ISSN: 0036-8075 , 1095-9203
    URL: Article
    DOI: 10.1126/science.285.5431.1241
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: American Association for the Advancement of Science (AAAS)
    Publication Date: 1999
    detail.hit.zdb_id: 128410-1
    detail.hit.zdb_id: 2066996-3
    detail.hit.zdb_id: 2060783-0
    SSG: 11
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  • 9
    Online Resource
    Online Resource
    Local order and the gapped phase of the Hubbard model: A plaquette dynamical mean-field investigation
    IOP Publishing ; 2008
    In:  EPL (Europhysics Letters) Vol. 84, No. 3 ( 2008-11), p. 37009-
    Details
    In: EPL (Europhysics Letters), IOP Publishing, Vol. 84, No. 3 ( 2008-11), p. 37009-
    Type of Medium: Online Resource
    ISSN: 0295-5075 , 1286-4854
    URL: Article
    DOI: 10.1209/0295-5075/84/37009
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2008
    detail.hit.zdb_id: 1465366-7
    detail.hit.zdb_id: 165776-8
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  • 10
    Online Resource
    Online Resource
    Expression of interleukin 1-inducible genes and production of interleukin 1 by aging human fibroblasts.
    Proceedings of the National Academy of Sciences ; 1992
    In:  Proceedings of the National Academy of Sciences Vol. 89, No. 10 ( 1992-05-15), p. 4683-4687
    Details
    In: Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 89, No. 10 ( 1992-05-15), p. 4683-4687
    Abstract: The interleukin 1 (IL-1)-inducible mRNAs for plasminogen activator inhibitor type 2, manganese superoxide dismutase, and urokinase are overexpressed in old (greater than 70% of life-span completed) but not in young (less than 40% of life-span completed) human foreskin fibroblasts. Furthermore, the activity of this superoxide dismutase is greater in old than in young fibroblasts. IL-1 beta mRNA is detected by Northern blot analysis in old fibroblasts and its expression is further enhanced by a treatment with IL-1 alpha. IL-1 alpha and IL-1 beta mRNAs are detected in old foreskin and lung fibroblasts by a sensitive reverse transcription-PCR assay. IL-1 mRNA is consistently expressed after fibroblasts have completed 85% of their in vitro life-span; an assay with specific antibodies shows that IL-1 alpha is present in these fibroblasts. Prolonged treatment with IL-1 receptor antagonist decreases the levels of IL-1 alpha and of IL-1 alpha and IL-1 beta mRNAs. This observation suggests that IL-1 receptor antagonist inhibits an autocrine loop responsible for IL-1 expression. IL-1 mRNA accumulates in young fibroblasts treated with cycloheximide, suggesting that it is transcribed but unstable in these cells; accumulation of IL-1 mRNA in old fibroblasts may be due at least in part to increased stability. IL-1 alpha stimulates DNA synthesis in young fibroblasts but has progressively less effect as the cells age in culture. These data indicate that IL-1 is "constitutively" produced by aging fibroblasts and that IL-1 induces the expression of specific proteins in these cells. The mechanism for this constitutive production of IL-1 is explored in this paper.
    Type of Medium: Online Resource
    ISSN: 0027-8424 , 1091-6490
    URL: Article
    DOI: 10.1073/pnas.89.10.4683
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: Proceedings of the National Academy of Sciences
    Publication Date: 1992
    detail.hit.zdb_id: 209104-5
    detail.hit.zdb_id: 1461794-8
    SSG: 11
    SSG: 12
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