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Anomalous quantum criticality in the electron-doped cuprates
P. R. Mandal, Tarapada Sarkar, Richard L. Greene
In the physics of condensed matter, quantum critical phenomena and unconventional superconductivity are two major themes. In electron doped cuprates, the low upper critical field a…
Correlation between scale-invariant normal state resistivity and superconductivity in an electron-doped cuprate
Tarapada Sarkar, P. R. Mandal, N. R. Poniatowski +2
An understanding of the normal state in the high-temperature superconducting cuprates is crucial to the ultimate understanding of the long-standing problem of the origin of the sup…
Thermal Diffusivity Above Mott-Ioffe-Regel Limit
Jiecheng Zhang, Erik D. Kountz, Eli M. Levenson-Falk +3
We present high-resolution thermal diffusivity measurements on several near optimally doped electron- and hole-doped cuprate systems in a temperature range that passes through the…
Observation of perfect Andreev reflection due to Klein paradox in a topological superconducting state
Seunghun Lee, Valentin Stanev, Xiaohang Zhang +11
In 1928, P. Dirac proposed a new wave equation to describe relativistic electrons. Shortly afterwards, O. Klein solved a simple potential step problem for the Dirac equation and st…
Anomalous normal state resistivity in superconducting : Fermi liquid or strange metal?
Tarapada Sarkar, Richard L. Greene, S. Das Sarma
We present experimental results for the in-plane resistivity of the electron-doped cuprate superconductor above its transition temperature as a function o…
Quantum oscillations from the reconstructed Fermi surface in electron-doped cuprate superconductors
J S Higgins, M K Chan, Tarapada Sarkar +3
We have studied the electronic structure of electron-doped cuprate superconductors via measurements of high-field Shubnikov-de Haas oscillations in thin films. In optimally doped P…