极化子Wigner晶体量子临界点附近极化子液体中的费什巴赫共振和纳米级相分离
The Feshbach resonance and nanoscale phase separation in a polaron liquid near the quantum critical point for a polaron Wigner crystal
摘要：
与高Tc超导长程序竞争的额外的长程序参数被确定为超过电子晶格相互作用的临界值的伪Jahn-Teller极化子的电子晶体。我们表明，在铜酸盐的两个变量相图中的量子临界涨落区域：掺杂（δ）和化学压力（即，公差因子或A位阳离子的平均离子半径）可以通过CuO 2晶格中Cu-O长度的微应变（η）来测量。在微应变量子临界点附近与超导长程序竞争的波动顺序是称为Wigner极化子晶体的极化子电子结晶相，并且作为微应变的函数的自旋能隙的变化为这一提议提供了强有力的实验支持。
英文摘要：
The additional long range order parameter that competes with the high Tc superconductivity long range order is identified as an electronic crystal of pseudo Jahn-Teller polarons beyond the critical value of the electron lattice interaction. We show that the region of quantum critical fluctuations in the two variables phase diagram of cuprates: the doping (delta) and the chemical pressure (i.e., the tolerance factor, or the average ionic radius of A-site cations) can be measured via the microstrain (eta) of the Cu-O length in the CuO2 lattice. The fluctuating order in the proximity of the microstrain quantum critical point that competes with the superconducting long range order is the polaron electronic crystalline phase called a Wigner polaron crystal and the variation of the spin gap energy as a function of microstrain provides a strong experimental support for this proposal.
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