Moessner R, Sondhi SL, Chandra P
Department of Physics, Jadwin Hall, Princeton University, Princeton, New Jersey 08544, USA.
Phys Rev Lett. 2000 May 8;84(19):4457-60. doi: 10.1103/PhysRevLett.84.4457.
We investigate the interplay of classical degeneracy and quantum dynamics in a range of periodic frustrated transverse field Ising systems at zero temperature. We find that such dynamics can lead to unusual ordered phases and phase transitions or to a quantum spin liquid (cooperative paramagnetic) phase as in the triangular and kagome lattice antiferromagnets, respectively. For the latter, we further predict passage to a bond-ordered phase followed by a critical phase as the field is tilted. These systems also provide exact realizations of quantum dimer models introduced in studies of high temperature superconductivity.
我们研究了一系列零温周期性受挫横向场伊辛系统中经典简并与量子动力学的相互作用。我们发现，这种动力学分别可以导致如三角晶格和 kagome 晶格反铁磁体中出现异常的有序相和相变，或者导致量子自旋液体（合作顺磁）相。对于后者，我们进一步预测，随着场倾斜，会过渡到键序相，然后是临界相。这些系统还为高温超导研究中引入的量子二聚体模型提供了精确的实现。
