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Anomalous Thermal Diffusivity in Underdoped YBaCuO
J. -C. Zhang, E. M. Levenson-Falk, B. J. Ramshaw +5
We present local optical measurements of thermal diffusivity in the plane of underdoped YBCO crystals. We find that the diffusivity anisotropy is comparable to reported values…
Towards a quantitative description of tunneling conductance of superconductors: application to LiFeAs
A. Kreisel, R. Nelson, T. Berlijn +11
Since the discovery of iron-based superconductors, a number of theories have been put forward to explain the qualitative origin of pairing, but there have been few attempts to make…
Electron Plasmas Cooled by Cyclotron-Cavity Resonance
A. P. Povilus, N. D. DeTal, L. T. Evans +10
We observe that high-Q electromagnetic cavity resonances increase the cyclotron cooling rate of pure electron plasmas held in a Penning-Malmberg trap when the electron cyclotron fr…
Observation of electronic bound states in charge-ordered YBaCuO
R. Zhou, M. Hirata, T. Wu +11
Observing how electronic states in solids react to a local symmetry breaking provides insight into their microscopic nature. A striking example is the formation of bound states whe…
Open Microwave Cavity for use in a Purcell Enhancement Cooling Scheme
N. Evetts, I. Martens, D. Bizzotto +2
A microwave cavity is described which can be used to cool lepton plasmas for potential use in synthesis of antihydrogen. The cooling scheme is an incarnation of the Purcell Effect:…
Impact of Iron-site defects on Superconductivity in LiFeAs
Shun Chi, Ramakrishna Aluru, Udai Raj Singh +10
In conventional s-wave superconductors, only magnetic impurities exhibit impurity bound states, whereas for an s+- order parameter they can occur for both magnetic and non-magnetic…