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92 Aktuelle Fachpublikationen zum Thema temperature

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[Report] Chirality density wave of the “hidden order” phase in URu2Si2

20.03.2015 | H.-H. Kung; R. E. Baumbach; E. D. Bauer; V. K. Thorsmølle; W.-L. Zhang; K. Haule; J. A. Mydosh; G. Blumberg, Science , 2015

A second-order phase transition in a physical system is associated with the emergence of an “order parameter” and a spontaneous symmetry breaking. The heavy fermion superconductor URu2Si2 has a “hidden order” (HO) phase below the temperature of 17.5 kelvin; the symmetry of the associated order ...

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[Report] Experimental ground-state combination differences of CH5+

20.03.2015 | Oskar Asvany; Koichi M. T. Yamada; Sandra Brünken; Alexey Potapov; Stephan Schlemmer, Science , 2015

Protonation of methane (CH4), a rather rigid molecule well described by quantum mechanics, produces CH5+, a prototypical floppy molecule that has eluded definitive spectroscopic description. Experimental measurement of high-resolution spectra of pure CH5+ samples poses a formidable challenge. By ...

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[Report] Coulomb crystallization of highly charged ions

13.03.2015 | L. Schmöger; O. O. Versolato; M. Schwarz; M. Kohnen; A. Windberger; B. Piest; S. Feuchtenbeiner; J. Pedregosa-Gutier ..., Science , 2015

Control over the motional degrees of freedom of atoms, ions, and molecules in a field-free environment enables unrivalled measurement accuracies but has yet to be applied to highly charged ions (HCIs), which are of particular interest to future atomic clock designs and searches for physics beyond ...

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[Perspective] Why the Pacific is cool

27.02.2015 | Ben B. Booth, Science , 2015

After a period of rapid global warming, the rate of global temperature rise has slowed markedly in the past 10 to 15 years. Is this “hiatus” a result of natural climate variability, or does it signify a change in the drivers of global warming? On page 988 of this issue, Steinman et al. (1) ...

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[Report] Atlantic and Pacific multidecadal oscillations and Northern Hemisphere temperatures

27.02.2015 | Byron A. Steinman; Michael E. Mann; Sonya K. Miller, Science , 2015

The recent slowdown in global warming has brought into question the reliability of climate model projections of future temperature change and has led to a vigorous debate over whether this slowdown is the result of naturally occurring, internal variability or forcing external to Earth’s climate ...

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[Editors' Choice] A temperature probe for the ultracold

13.02.2015 | Ian S. Osborne, Science , 2015

Author: Ian S. Osborne

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[Report] Light-induced superconductivity using a photoactive electric double layer

13.02.2015 | Masayuki Suda; Reizo Kato; Hiroshi M. Yamamoto, Science , 2015

Electric double layers (EDLs) of ionic liquids have been used in superconducting field-effect transistors as nanogap capacitors. Because of the freezing of the ionic motion below ~200 kelvin, modulations of the carrier density have been limited to the high-temperature regime. Here we observe ...

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[Perspective] Taking temperature at the nanoscale

06.02.2015 | Christian Colliex, Science , 2015

Measuring temperature has become commonplace since Fahrenheit, Celsius, and others introduced thermometers and temperature scales in the 18th century. However, the definition of temperature is not at all obvious, as it is now described as a statistical quantity given by the rate of change of ...

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[Report] Nanoscale temperature mapping in operating microelectronic devices

06.02.2015 | Matthew Mecklenburg; William A. Hubbard; E. R. White; Rohan Dhall; Stephen B. Cronin; Shaul Aloni; B. C. Regan, Science , 2015

Modern microelectronic devices have nanoscale features that dissipate power nonuniformly, but fundamental physical limits frustrate efforts to detect the resulting temperature gradients. Contact thermometers disturb the temperature of a small system, while radiation thermometers struggle to beat ...

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[Report] Programming colloidal phase transitions with DNA strand displacement

06.02.2015 | W. Benjamin Rogers; Vinothan N. Manoharan, Science , 2015

DNA-grafted nanoparticles have been called “programmable atom-equivalents”: Like atoms, they form three-dimensional crystals, but unlike atoms, the particles themselves carry information (the sequences of the grafted strands) that can be used to “program” the equilibrium crystal structures. We ...

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