Quasi-one-dimensional parahydrogen in nanopores

Article

关键词: MOLECULAR-HYDROGEN;    SUPERFLUIDITY;    ADSORPTION;    H-2;   

DOI  :  10.1103/PhysRevB.93.104501

来源: SCIE

【 摘 要 】

The low temperature physics of parahydrogen (p-H-2) confined in cylindrical channels of diameter of the order of 1 nm is studied theoretically by quantum Monte Carlo simulations. On varying the attractive strength of the wall of the cylindrical pore, as well as its diameter, the equilibrium phase evolves from a single quasi-one-dimensional (1D) channel along the axis, to a concentric cylindrical shell. It is found that the quasi-1D system retains a strong propensity to crystallization, even though on weakly attractive substrates quantum fluctuations reduce somewhat such a tendency compared to the purely 1D system. No evidence of a topologically protected superfluid phase (in the Luttinger sense) is observed. Implications on the possible existence of a bulk superfluid phase of parahydrogen are discussed.

【 授权许可】

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