Impurity states and marginal stability of unconventional ...
Impurity states and marginal stability of unconventional ...
Impurity states and marginal stability of unconventional ...
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Theory <strong>of</strong> impurity resonance in<br />
d-wave SC<br />
Balatsky, Salkola, Rosengren (95)<br />
Hint = U n(0)<br />
N<br />
ω 1<br />
= ln<br />
∆ πN U<br />
0<br />
−1<br />
( πN U )[1 + iπ<br />
ln<br />
0<br />
−1<br />
( πN U )]<br />
0<br />
N<br />
Cross<br />
shaped<br />
state<br />
∆<br />
E<br />
Nonmagnetic<br />
And magnetic imp<br />
Universal:Similar <strong>states</strong> will be created<br />
in p,f,g…<strong>states</strong> with gap nodes.<br />
ω<br />
∆<br />
Splitting due<br />
to exchange J<br />
E
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