Fractional quantum Hall states in bilayer graphene: (A and C) Inverse compressibility as a function of filling factor and magnetic field. The color scales are the same in both panels. (B and D) Average inverse compressibility between B = 7.9 and 11.9 T as a function of filling factor. Colors indicate regions of similar behavior in the background inverse compressibility. (E and F) Inverse compressibility as a function of filling factor and magnetic field near ν = –7/5 and 3/5.
Graduate student Andy Yen is one of the founders of ProtonMail: the first end-to-end encrypted email service which is web based and easy to use. PhotonMail is said to be so secure that its data is inaccessible even to ProtonMail's own servers and and thus cannot be cracked by third parties. The Beta version of the service was released on May 16; the response has been so overwhelming that new signups are already on hold while the company is launching additional servers.
Prof. Eric Mazur is the first winner of the Minerva Prize for Advancements in Higher Education. In recognizing Dr. Mazur for his significant contributions to improving higher education, the Minerva Academy specifically noted his development of Peer Instruction, an innovative teaching method that incorporates interactive pedagogy into the classroom and has been recognized worldwide for driving dramatic improvements in student learning.
Superconductivity arises from pairing of electrons on the Fermi surface. Professors Jenny Hoffman and Subir Sachdev, with colleagues from Harvard, MIT, Nagoya University, and Northeastern University report in Science that they used Fourier transform STM to map a small-to-large Fermi surface transition in the cuprate superconductor Bi2-yPbySr2-xLaxCuO6+d, demonstrating a quantum critical point near optimal doping at zero field. The researchers showed that superconductivity coexists with the pseudogap on the recovered antinodal Fermi surface above optimal doping.
Professors Hoffman, Sachdev are at the forefront of cutting-edge research on high-energy superconductors. Read: N. Wolchover, "Decoding the Secrets of Superconductivity," Quanta Magazine (20 April 2014).
Dr. Dalla Torre was awarded the Alon Fellowship for young faculty members by the Israeli Council for Higher Education. He is currently a post-doctorate fellow at the Department of Physics, in the group of Prof. Eugene Demler, and an ITAMP fellow. Next year Dr. Dalla Torre is heading to Bar Ilan University. His research focuses on the non-equilibrium dynamics of many-body systems; more details can be obtained from his (future) group's website at http://www.nonequilibrium.org .
Past studies have identifed a spatially extended excess of 1-3 GeV gamma rays from the region surrounding the Galactic Center, consistent with the emission expected from annihilating dark matter. Harvard Physics grad student Tansu Daylan, Prof. Douglas Finkbeiner, and researchers from Fermilab, University of Chicago, MIT, and Princeton revisited and scrutinized this signal with the intention of further constraining its characteristics and origin.