Zobrazeno 1 - 10
of 18
pro vyhledávání: '"M. T. Loponen"'
Publikováno v:
Physical Review Letters. 50:1516-1519
The entropy and susceptibility of copper nuclear spins below 1 \ensuremath{\mu}K have been measured as a function of temperature both in the paramagnetic and in the antiferromagnetic states. The critical temperature is 63\ifmmode\pm\else\textpm\fi{}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24a31e8f2872517a267f6befac027f0e
https://doi.org/10.1103/physrevlett.50.1516
https://doi.org/10.1103/physrevlett.50.1516
Publikováno v:
Journal of Low Temperature Physics. 19:1-37
The viscosity η of liquid 3 He has been measured along the melting curve from 1 to 100 mK by means of a vibrating wire viscometer. In the normal Fermiliquid region we find 1/ηT2 = 1.17−3.10T, where η is in ΜP and T in K. At the transition tempe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::760ce5e35c23c9a268e892e4537303ea
https://doi.org/10.1007/bf00115527
https://doi.org/10.1007/bf00115527
Publikováno v:
Physica B+C. :1873-1879
Measurements on the time dependence of the specific heat exist now both at short and long timescales. Below 0.3 K the short time (}10 μs) specific heat of all the materials studied is smaller than the long time specific heat, but larger than the Deb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a376cf0800ba86480026aa16adcb85d
https://doi.org/10.1016/0378-4363(82)90211-x
https://doi.org/10.1016/0378-4363(82)90211-x
Publikováno v:
Journal of Low Temperature Physics. 39:417-450
The nuclear spin system of metallic copper in a poly crystalline sample consisting of thin wires has been studied using a cryostat in which a dilution refrigerator and two copper nuclear stages operate in series. The spin system was cooled to 50 nK,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1acc4b64d15b7736ee9f67f787b1c675
https://doi.org/10.1007/bf00115631
https://doi.org/10.1007/bf00115631
Publikováno v:
Physical Review B. 23:2051-2059
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5fce8af47531694bab3423673e11638d
https://doi.org/10.1103/physrevb.23.2051
https://doi.org/10.1103/physrevb.23.2051
Publikováno v:
Physical Review Letters. 32:981-985
The viscosity and the density of the normal component of liquid $^{3}\mathrm{He}$ in the $A$ and $B$ phases have been determined at the melting curve with a vibrating-wire viscometer. The results show that resistive flow of the liquid is accompanied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b011596450c21d652e800f8279900668
https://doi.org/10.1103/physrevlett.32.981
https://doi.org/10.1103/physrevlett.32.981
Publikováno v:
Cryogenics. 14:384-390
A cryogenic system for studying the properties of He3 between 1 and 15 mK is described. The apparatus has been utilized for measurements of viscosity and heat capacity of liquid He3 along the melting curve. He3 is refrigerated in two steps. For tempe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::feefc7aa6a606d733722f2e12e4c406a
https://doi.org/10.1016/0011-2275(74)90079-4
https://doi.org/10.1016/0011-2275(74)90079-4
Publikováno v:
Huiku, M T, Jyrkkiö, T A, Kyynäräinen, J M, Loponen, M T, Lounasmaa, O V & Oja, A S 1986, ' Investigations of nuclear antiferromagnetic ordering in copper at nanokelvin temperatures ', Journal of Low Temperature Physics, vol. 62, no. 5-6, pp. 433-487 . https://doi.org/10.1007/BF00683405
Nuclear magnetism in metallic copper has been studied by demagnetizing highly polarized spins to low fields where spin-spin interactions dominate. In earlier experiments anomalous spin-lattice relaxation caused by impurities warmed up nuclear spins t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3630e32de7d977d2cca4d11b1658ca5d
https://doi.org/10.1007/BF00683405
https://doi.org/10.1007/BF00683405
Publikováno v:
Physical Review Letters. 45:457-460
The time-dependent specific heat of amorphous Si${\mathrm{O}}_{2}$ has been measured between 0.1 and 1 K over the range \ensuremath{\sim} 1 sec to 10 \ensuremath{\mu}sec. The decoupling of the roughly $T$-dependent contribution to specific heat is ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4733813a0f855453e0b651b83e9f7e84
https://doi.org/10.1103/physrevlett.45.457
https://doi.org/10.1103/physrevlett.45.457
Publikováno v:
Cryogenics. 19:673-678
An NMR spectrometer, where the transverse ac-component of magnetization is detected by a SQUID, is described and its sensitivity is analysed. The spectrometer was developed for studies of highly polarized metallic copper in low fields, for which the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54ab3aa0ce7532ac985a0fbbd11f3067
https://doi.org/10.1016/0011-2275(79)90071-7
https://doi.org/10.1016/0011-2275(79)90071-7