TABLE OF CONTENTS
|
July 2012 Volume 8, Issue 7 |
 |  |  |
 | Editorials
Thesis
Books and Arts
Research Highlights
News and Views
Letters
Articles
| |
 |
|
 |
 |
Advertisement |
 |

Online-only personal subscriptions now available to Nature Physics
For only 49 USD/29 GBP/29 EUR
Subscribe now! |
|
 |
|
Editorials | Top |
 |
 |
 |
Light in the east p505 doi:10.1038/nphys2369 Plans for the Extreme Light Infrastructure in eastern Europe are soon to be complete, with the choice of a fourth, and final, site for the facility.
|
 |
 |
 |
Everyone's a winner p505 doi:10.1038/nphys2370 The bid to host the world's largest, most sensitive radio telescope has ended in a tie.
|
 |
Thesis | Top |
 |
 |
 |
Passing trade p507 Mark Buchanan doi:10.1038/nphys2359
|
 |
Books and Arts | Top |
 |
 |
 |
Theatre: Physicists behaving badly pp508 - 509 Alison Wright doi:10.1038/nphys2360
|
 |
Research Highlights | Top |
 |
 |
 |
Shrink from tension | Branching out | Exciting an avalanche | Out of the vacuum | Opposites form Cooper pairs
|
News and Views | Top |
 |
 |
 |
|
 |
Letters | Top |
 |
 |
 |
Efficient and long-lived quantum memory with cold atoms inside a ring cavity pp517 - 521 Xiao-Hui Bao, Andreas Reingruber, Peter Dietrich, Jun Rui, Alexander Duck, Thorsten Strassel, Li Li, Nai-Le Liu, Bo Zhao and Jian-Wei Pan doi:10.1038/nphys2324 A quantum memory that combines high-efficiency and long lifetime is now demonstrated. Employing a collective excitation, or spin wave, in an ensemble of atoms in a trap improves memory lifetime, while incorporating the trap into an optical ring cavity simultaneously aids higher retrieval efficiency.
|
 |
 |
 |
Quantum interference and phonon-mediated back-action in lateral quantum-dot circuits pp522 - 527 G. Granger, D. Taubert, C. E. Young, L. Gaudreau, A. Kam, S. A. Studenikin, P. Zawadzki, D. Harbusch, D. Schuh, W. Wegscheider, Z. R. Wasilewski, A. A. Clerk, S. Ludwig and A. S. Sachrajda doi:10.1038/nphys2326 You influence a system by measuring it. This back-action is an important consideration when studying tiny structures in which quantum effects play a crucial role. Researchers now show that quantum interference could provide a way to negate back-action in quantum-dot-qubit circuits.
See also: News and Views by Ladd
|
 |
 |
 |
Emergent rank-5 nematic order in URu2Si2 pp528 - 533 Hiroaki Ikeda, Michi-To Suzuki, Ryotaro Arita, Tetsuya Takimoto, Takasada Shibauchi and Yuji Matsuda doi:10.1038/nphys2330 Uranium ruthenium silicide exhibits a discontinuity in its specific heat at 17.5 K. The underlying cause of this anomaly is hotly debated. A first-principles study of high-order correlations in its electronic structure suggests this behaviour is the result of the emergence of rank-5 nematic order.
|
 |
 |
 |
Visualization of the emergence of the pseudogap state and the evolution to superconductivity in a lightly hole-doped Mott insulator pp534 - 538 Y. Kohsaka, T. Hanaguri, M. Azuma, M. Takano, J. C. Davis and H. Takagi doi:10.1038/nphys2321 Scanning tunnelling microscopy images of the evolution of the pseudogap phase of a hole-doped cuprate superconductor suggest that it emerges in localized clusters that grow with increasing doping. Moreover, the eventual coalescence of these clusters coincides with the emergence of superconductivity.
See also: News and Views by Wahl
|
 |
 |
 |
Equal-spin Andreev reflection and long-range coherent transport in high-temperature superconductor/half-metallic ferromagnet junctions pp539 - 543 C. Visani, Z. Sefrioui, J. Tornos, C. Leon, J. Briatico, M. Bibes, A. Barthélémy, J. Santamaría and Javier E. Villegas doi:10.1038/nphys2318 The penetration of a superconducting current from a superconductor into a half-metallic ferromagnet is usually forbidden. Resonances in the conductance spectra of superconductor/half-metal heterostructures suggest this restriction is lifted by the occurrence of unconventional equal-spin Andreev reflection.
|
 |
Articles | Top |
 |
 |
 |
Probing an ultracold-atom crystal with matter waves pp544 - 549 Bryce Gadway, Daniel Pertot, Jeremy Reeves and Dominik Schneble doi:10.1038/nphys2320 Diffraction of matter waves from crystalline structures has long been used to characterize underlying spatial order. The same principle offers a valuable—and potentially non-destructive—tool for probing the strongly correlated phases of ultracold atoms confined to optical lattices.
|
 |
 |
 |
Spin and valley quantum Hall ferromagnetism in graphene pp550 - 556 A. F. Young, C. R. Dean, L. Wang, H. Ren, P. Cadden-Zimansky, K. Watanabe, T. Taniguchi, J. Hone, K. L. Shepard and P. Kim doi:10.1038/nphys2307 The extra states sometimes observed in graphene's quantum Hall characteristics have been presumed to be the result of broken SU(4) symmetry. Magnetotransport measurements of high-quality graphene in a tilted magnetic field finally prove this is indeed the case.
|
 |
 |
 |
Highly efficient spin transport in epitaxial graphene on SiC pp557 - 561 Bruno Dlubak, Marie-Blandine Martin, Cyrile Deranlot, Bernard Servet, Stéphane Xavier, Richard Mattana, Mike Sprinkle, Claire Berger, Walt A. De Heer, Frédéric Petroff, Abdelmadjid Anane, Pierre Seneor and Albert Fert doi:10.1038/nphys2331 A demonstration of the ability to transmit spin currents over distances of more than one hundred micrometres with an efficiency of up to 75% in graphene grown epitaxially on silicon carbide improves the prospects of graphene-based spintronic devices.
|
 |
 |
 |
Multiscale photosynthetic and biomimetic excitation energy transfer pp562 - 567 A. K. Ringsmuth, G. J. Milburn and T. M. Stace doi:10.1038/nphys2332 There is growing evidence that quantum coherence enhances energy transfer through individual photosynthetic light-harvesting protein complexes. This idea is now extended to complicated networks of such proteins and chemical reaction centres. A mathematical analysis reveals that coherence lengths up to 5 nm are possible.
|
 |
 |
 |
Controlling edge dynamics in complex networks pp568 - 573 Támas Nepusz and Tamas Vicsek doi:10.1038/nphys2327 Surprisingly little is known about how network dynamics might be controlled, despite extensive research into how they behave. A study of the controllability of network edge dynamics reveals that it differs from that of nodal dynamics, and that real-world networks are easier to control than their random counterparts.
See also: News and Views by Slotine & Liu
|
 |
Top |
 |
 |
Advertisement |
 |
Scientific Reports publishes 457 open access papers in its first year
Publishing technically sound research articles, Scientific Reports is Nature Publishing Group’s fastest growing journal. Given the speed and visibility offered, no wonder 93% of our authors said that they are “likely” or “very likely” to submit again.
Keep your research moving. Submit to Scientific Reports |
|
 |
|
 |  |  |  |  |  | Natureevents is a fully searchable, multi-disciplinary database designed to maximise exposure for events organisers. The contents of the Natureevents Directory are now live. The digital version is available here. Find the latest scientific conferences, courses, meetings and symposia on natureevents.com. For event advertising opportunities across the Nature Publishing Group portfolio please contact natureevents@nature.com |  |  |  |  |  |
|
 |
No comments:
Post a Comment