首页|Phase diagram of muonium hydride:the significant effect of dimensionality
Phase diagram of muonium hydride:the significant effect of dimensionality
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We carry out a theoretical investigation of the low-temperature phase diagram of muonium hydride in two dimensions,using numerical simulations.It is shown that the phase diagram of this substance is qualitatively different in two and three dimensions.Specifically,while in three dimensions it is essentially identical to that of parahydrogen,i.e.,only displaying a single(crystalline)phase.In two dimensions it is very similar to that of 4He,with an equilibrium liquid phase that turns superfluid at a temperature as high as~2.2 K,and crystallizes under applied pressure.This is a well-described case of a continuous-space condensed matter system whose ground state equilibrium phase is qualitatively altered by dimensional reduction.
quantum fluids and solidsquantum Monte Carlophase diagrams
Jieru Hu、Massimo Boninsegni
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Department of Physics,University of Alberta,Edmonton,Alberta T6G 2H5,Canada
State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai,200062,China