Now showing items 1-7 of 7

• #### Etching of Cr tips for scanning tunneling microscopy of cleavable oxides ﻿

(AIP Publishing, 2017)
We report a detailed three-step roadmap for the fabrication and characterization of bulk Cr tips for spin-polarized scanning tunneling microscopy. Our strategy uniquely circumvents the need for ultra-high vacuum preparation ...
• #### Fermi Surface and Pseudogap Evolution in a Cuprate Superconductor ﻿

(American Association for the Advancement of Science (AAAS), 2014)
The unclear relationship between cuprate superconductivity and the pseudogap state remains an impediment to understanding the high transition temperature (Tc) superconducting mechanism. Here, we used magnetic field–dependent ...
• #### Interplay of chemical disorder and electronic inhomogeneity in unconventional superconductors ﻿

(Royal Society of Chemistry (RSC), 2013)
Many of today's forefront materials, such as high-Tc superconductors, doped semiconductors, and colossal magnetoresistance materials, are structurally, chemically and/or electronically inhomogeneous at the nanoscale. ...
• #### Nanoscale Surface Element Identification and Dopant Homogeneity in the High-$T_c$ Superconductor $Pr_xC_{1-x}Fe_2As_2$ ﻿

(American Physical Society, 2013)
We use scanning tunneling microscopy to determine the surface structure and dopant distribution in $Pr_xCa_{1-x}Fe_2As_2$, the highest-$T_c$ member of the 122 family of iron-based superconductors. We identify the cleaved ...
• #### Nanoscale surface element identification and dopant homogeneity in the high-$T_{c}$ superconductor $Pr_xCa_{1−x}Fe_2As_2$ ﻿

(American Physical Society (APS), 2013)
We use scanning tunneling microscopy to determine the surface structure and dopant distribution in $Pr_xCa_{1−x}Fe_2As_2$, the highest-Tc member of the 122 family of iron-based superconductors. We identify the cleaved ...
• #### Scanning Tunnelling Microscopy Imaging of Symmetry-breaking Structural Distortion in the Bismuth-based Cuprate Superconductors ﻿

(Nature Publishing Group, 2012)
A complicating factor in unravelling the theory of high-temperature (high-$T_c$) superconductivity is the presence of a ‘pseudogap’ in the density of states, the origin of which has been debated since its discovery. Some ...
• #### Visualizing the Interplay of Structural and Electronic Disorders in High-Temperature Superconductors Using Scanning Tunneling Microscopy ﻿

(2013-09-26)
The discovery of high-$T_c$ superconductivity in 1986 generated tremendous excitement. However, despite over 25 years of intense research efforts, many properties of these complex materials are still poorly understood. ...