Superfluid transition of He-4 in porous gold

被引：50

作者：

Yoon, J

Chan, MHW

机构：

[1] Department of Physics, Pennsylvania State University, University Park, PA

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.78.4801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the superfluid density and the heat capacity of He-4 confined in porous gold in order to study the effect of quenched disorder on the superfluid transition. The superfluid density exponent is found to be identical to that of bulk He-4 within experimental resolution The heat capacity shows a sharp peak at the transition temperature. The size of the peak appears to be larger than that predicted by critical phenomena theory.

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页码：4801 / 4804

页数：4

相关论文

共 27 条

[1] HEAT CAPACITY NEAR SUPERFLUID TRANSITION IN HE-4 AT SATURATED VAPOR PRESSURE [J].

AHLERS, G .

PHYSICAL REVIEW A, 1971, 3 (02) :696-&

[2] CRITICAL-BEHAVIOR OF A SITE-DILUTED 3-DIMENSIONAL ISING MAGNET [J].

BIRGENEAU, RJ ;

COWLEY, RA ;

SHIRANE, G ;

YOSHIZAWA, H ;

BELANGER, DP ;

KING, AR ;

JACCARINO, V .

PHYSICAL REVIEW B, 1983, 27 (11) :6747-6753

[3]

Brewer D. F., 1970, Journal of Low Temperature Physics, V3, P205, DOI 10.1007/BF00628144

[4] Helium in aerogel [J].

Chan, M ;

Mulders, N ;

Reppy, J .

PHYSICS TODAY, 1996, 49 (08) :30-37

[5] DISORDER AND THE SUPERFLUID TRANSITION IN LIQUID-HE-4 [J].

CHAN, MHW ;

BLUM, KI ;

MURPHY, SQ ;

WONG, GKS ;

REPPY, JD .

PHYSICAL REVIEW LETTERS, 1988, 61 (17) :1950-1953

[6]

CHAN MHW, 1989, QUANTUM FLUIDS SOLID, P170

[7] FINITE-SIZE SCALING AND CORRELATION LENGTHS FOR DISORDERED-SYSTEMS [J].

CHAYES, JT ;

CHAYES, L ;

FISHER, DS ;

SPENCER, T .

PHYSICAL REVIEW LETTERS, 1986, 57 (24) :2999-3002

[8]

CHEN TP, 1978, THESIS SUNY BUFFALO

[9] EXCITATION SPECTRUM AND THERMODYNAMIC PROPERTIES OF LIQUID-FILMS IN CYLINDRICAL PORES [J].

COLE, MW ;

SAAM, WF .

PHYSICAL REVIEW LETTERS, 1974, 32 (18) :985-988

[10] THEORY OF RANDOM MAGNETS [J].

FISHER, DS ;

GRINSTEIN, GM ;

KHURANA, A .

PHYSICS TODAY, 1988, 41 (12) :56-67