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The 2-Channel Kondo Model II: CFT Calculation of Non-Equilibrium Conductance through a Nanoconstriction containing 2-Channel Kondo Impurities
Jan von Delft, A. W. W. Ludwig, Vinay Ambegaokar
Recent experiments by Ralph and Buhrman on zero-bias anomalies in quenched Cu nanoconstrictions (reviewed in the preceding paper, I), are in accord with the assumption that the int…
The 2-Channel Kondo Model I: Review of Experimental Evidence for its Realization in Metal Nanoconstrictions
Jan von Delft, D. C. Ralph, R. A. Buhrman +4
Certain zero-bias anomalies (ZBAs) in the voltage, temperature and magnetic field dependence of the conductance of quenched Cu point contacts have previously been interp…
Parity-Affected Superconductivity in Ultrasmall Metallic Grains
Jan von Delft, Dmitrii S. Golubev, Wolfgang Tichy +1
We investigate the breakdown of BCS superconductivity in {\em ultra}\/small metallic grains as a function of particle size (characterized by the mean spacing between discrete e…
Spin tunneling in the Kagomé antiferromagnet
Jan von Delft, Christopher L. Henley
The collective tunneling of a small cluster of spins between two degenerate ground state configurations of the Kagomé-lattice quantum Heisenberg antiferromagnet is \mbox{studied}.…
Destructive quantum interference in spin tunneling problems
Jan von Delft, Christopher L. Henley
In some spin tunneling problems, there are several different but symmetry-related tunneling paths that connect the same initial and final configurations. The topological phase fact…