Dzero Maxim, Schmalian Jörg
Department of Physics and Astronomy and Ames Laboratory, Iowa State University, Ames, Iowa 50011, USA.
Phys Rev Lett. 2005 Apr 22;94(15):157003. doi: 10.1103/PhysRevLett.94.157003. Epub 2005 Apr 21.
We present a theory for superconductivity and charge Kondo fluctuations, i.e., resonant quantum valence fluctuations by two charge units, for Tl-doped PbTe. We show that Tl is very special as it first supplies a certain amount of charge carriers to the PbTe-valence band and then puts itself into a self-tuned resonant state to yield a new, robust pairing mechanism for these carriers.
我们提出了一种关于铊掺杂碲化铅的超导性和电荷近藤涨落（即两个电荷单位的共振量子价涨落）的理论。我们表明，铊非常特殊，因为它首先向碲化铅价带提供一定数量的电荷载流子，然后使其自身进入自调谐共振态，从而为这些载流子产生一种新的、稳健的配对机制。
