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Grenoble, France

, for the medical condition, see end stage renal failure[[Image:ESRF mg 2251.jpg| joint research facility supported by 2 people situated in Grenoble, France. It has an annual budget of around 80 million euros, employs over 600 people and is host to more than 3500 visiting scientists each year.Research at the ESRF focuses, in large part, on the use of X-ray radiation in fields as diverse as protein crystallography, earth science, paleontology, materials science, chemistry and physics. Facilities such as the ESRF offer a flux, energy range and resolution unachievable with conventional radiation sources.The ESRF physical plant consists of two main buildings: the experiment hall, containing the 844 metre circumference ring and forty tangential beamlines; and a block of laboratories, preparation suites, and offices connected to the ring by a pedestrian bridge. The linear accelerator electron gun and smaller booster ring used to bring the beam to an operating energy of 6 GeV are constructed within the main ring. Until recently bicycles were provided for use indoors in the ring's circumferential corridor. Unfortunately they have been removed after some minor accidents. But even before this it was not possible to cycle continuously all the way around, since some of the beamlines exit the hall.The ESRF site forms part of the "Polygone Scientifique", lying at the confluence of the Drac and Isère rivers about 1.5 km from the centre of Grenoble. It is served by local bus and the Lyon airport coach, which stops at the Place de la Résistance just outside the site.The ESRF shares its site with several other institutions including the Institut Laue-Langevin and the European Molecular Biology Laboratory .The Centre national de la recherche scientifique has an institute just across the road. Wikipedia.


De Juan F.,Indiana University Bloomington | Cortijo A.,Autonomous University of Madrid | Vozmediano M.A.H.,CSIC - Institute of Materials Science | Cano A.,European Synchrotron Radiation Facility
Nature Physics | Year: 2011

One of the most interesting aspects of graphene is the close relation between its structural and electronic properties. The observation of ripples both in free-standing graphene and in samples on a substrate has given rise to active investigation of the membrane-like properties of graphene, and the origin of the ripples remains one of the most interesting open problems concerning this system. The interplay of structural and electronic properties is successfully described by the modelling of curvature and elastic deformations by fictitious gauge fields. These fields have become an experimental reality after the observation of the Landau levels that can form in graphene due to strain. Here we propose a device to detect microstresses in graphene based on a scanning-tunnelling-microscopy set-up able to measure Aharonov-Bohm interferences at the nanometre scale. The predicted interferences in the local density of states are created by the fictitious magnetic field associated with elastic deformations of the sample. © 2011 Macmillan Publishers Limited. All rights reserved. Source


Bruno P.,European Synchrotron Radiation Facility
Physical Review Letters | Year: 2012

The (Berry-Aharonov-Anandan) geometric phase acquired during a cyclic quantum evolution of finite-dimensional quantum systems is studied. It is shown that a pure quantum state in a (2J+1)-dimensional Hilbert space (or, equivalently, of a spin-J system) can be mapped onto the partition function of a gas of independent Dirac strings moving on a sphere and subject to the Coulomb repulsion of 2J fixed test charges (the Majorana stars) characterizing the quantum state. The geometric phase may be viewed as the Aharonov-Bohm phase acquired by the Majorana stars as they move through the gas of Dirac strings. Expressions for the geometric connection and curvature, for the metric tensor, as well as for the multipole moments (dipole, quadrupole, etc.), are given in terms of the Majorana stars. Finally, the geometric formulation of the quantum dynamics is presented and its application to systems with exotic ordering such as spin nematics is outlined. © 2012 American Physical Society. Source


Bruno P.,European Synchrotron Radiation Facility
Physical Review Letters | Year: 2013

A Comment on the Letter by T. Li et al., Phys. Rev. Lett. 109, 163001 (2012).PRLTAO0031-900710.1103/PhysRevLett.109.163001 © 2013 American Physical Society. Source


Bruno P.,European Synchrotron Radiation Facility
Physical Review Letters | Year: 2013

I present arguments indicating the impossibility of spontaneously rotating "quantum time crystals," as recently proposed by Frank Wilczek. In particular, I prove a "no-go theorem," rigorously ruling out the possibility of spontaneous ground-state (or thermal equilibrium) rotation for a broad class of systems. © 2013 American Physical Society. Source


Bruno P.,European Synchrotron Radiation Facility
Physical Review Letters | Year: 2013

A Comment on the Letter by F. Wilczek, Phys. Rev. Lett. 109, 160401 (2012)PRLTAO0031-900710.1103/PhysRevLett.109.160401. The authors of the Letter offer a Reply. © 2013 American Physical Society. Source

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