Spatially Modulated Superfluid State in Two-DimensionalHe4Films,Physical Review Letters

当前位置： X-MOL 学术 › Phys. Rev. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Spatially Modulated Superfluid State in Two-DimensionalHe4Films
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-09-21 , DOI: 10.1103/physrevlett.127.135301
Jaewon Choi ₁ , Alexey A Zadorozhko ₁ , Jeakyung Choi ₁ , Eunseong Kim ₁

Affiliation

The second layer of

{}^{4}{He}

films adsorbed on a graphite substrate is an excellent experimental platform to study the interplay between superfluid and structural orders. Here, we report a rigid two-frequency torsional oscillator study on the second layer as a function of temperature and

{}^{4}{He}

atomic density. For the first time, we show experimentally that the superfluid density is independent of frequency, which can be interpreted as unequivocal evidence of genuine superfluidity. The phase diagram established in this work reveals that a superfluid phase coexists with hexatic density-wave correlation and a registered solid phase. This suggests the second layer as a candidate for hosting two exotic quantum ground states: the spatially modulated superfluid and supersolid phases resulting from the interplay between superfluid and structural orders.

中文翻译：