Superfluidity of ⁴He confined in nanoporous media
We have examined superfluid properties of ⁴He confined to a nanoporous Gelsil glass that has nanopores
 2.5 nm in diameter. The pressure–temperature phase diagram was determined by torsional oscillator, heat
 capacity and pressure studies. The superfluid transition temperature Tc app...
Gespeichert in:
| Veröffentlicht in: | Физика низких температур |
|---|---|
| Datum: | 2008 |
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | Englisch |
| Veröffentlicht: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2008
|
| Schlagworte: | |
| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/116915 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Superfluidity of ⁴He confined in nanoporous media / K. Shirahama, K. Yamamoto, Y. Shibayama // Физика низких температур. — 2008. — Т. 34, № 4-5. — С. 350–356. — Бібліогр.: 30 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862709335247814656 |
|---|---|
| author | Shirahama, K. Yamamoto, K. Shibayama, Y. |
| author_facet | Shirahama, K. Yamamoto, K. Shibayama, Y. |
| citation_txt | Superfluidity of ⁴He confined in nanoporous media / K. Shirahama, K. Yamamoto, Y. Shibayama // Физика низких температур. — 2008. — Т. 34, № 4-5. — С. 350–356. — Бібліогр.: 30 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | We have examined superfluid properties of ⁴He confined to a nanoporous Gelsil glass that has nanopores
2.5 nm in diameter. The pressure–temperature phase diagram was determined by torsional oscillator, heat
capacity and pressure studies. The superfluid transition temperature Tc approaches zero at 3.4 MPa, indicating
a novel quantum superfluid transition. By heat capacity measurements, the nonsuperfluid phase adjacent
to the superfluid and solid phases is identified to be a nanometer-scale, localized Bose condensation state, in
which global phase coherence is destroyed. At high pressures, the superfluid density has a T-linear term, and
Tc is proportional to the zero-temperature superfluid density. These results strongly suggest that phase fluctuations
in the superfluid order parameter play a dominant role on the phase diagram and superfluid properties.
|
| first_indexed | 2025-12-07T17:17:15Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-116915 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T17:17:15Z |
| publishDate | 2008 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Shirahama, K. Yamamoto, K. Shibayama, Y. 2017-05-18T10:26:00Z 2017-05-18T10:26:00Z 2008 Superfluidity of ⁴He confined in nanoporous media / K. Shirahama, K. Yamamoto, Y. Shibayama // Физика низких температур. — 2008. — Т. 34, № 4-5. — С. 350–356. — Бібліогр.: 30 назв. — англ. 0132-6414 PACS: 67.25.D–;81.07.–b https://nasplib.isofts.kiev.ua/handle/123456789/116915 We have examined superfluid properties of ⁴He confined to a nanoporous Gelsil glass that has nanopores
 2.5 nm in diameter. The pressure–temperature phase diagram was determined by torsional oscillator, heat
 capacity and pressure studies. The superfluid transition temperature Tc approaches zero at 3.4 MPa, indicating
 a novel quantum superfluid transition. By heat capacity measurements, the nonsuperfluid phase adjacent
 to the superfluid and solid phases is identified to be a nanometer-scale, localized Bose condensation state, in
 which global phase coherence is destroyed. At high pressures, the superfluid density has a T-linear term, and
 Tc is proportional to the zero-temperature superfluid density. These results strongly suggest that phase fluctuations
 in the superfluid order parameter play a dominant role on the phase diagram and superfluid properties. This work is supported by the Grant-in-Aid for Priority Areas “Physics of Superclean Materials”, and Grantin-Aid for Scientific Research (A) from MEXT, Japan. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Жидкий гелий Superfluidity of ⁴He confined in nanoporous media Article published earlier |
| spellingShingle | Superfluidity of ⁴He confined in nanoporous media Shirahama, K. Yamamoto, K. Shibayama, Y. Жидкий гелий |
| title | Superfluidity of ⁴He confined in nanoporous media |
| title_full | Superfluidity of ⁴He confined in nanoporous media |
| title_fullStr | Superfluidity of ⁴He confined in nanoporous media |
| title_full_unstemmed | Superfluidity of ⁴He confined in nanoporous media |
| title_short | Superfluidity of ⁴He confined in nanoporous media |
| title_sort | superfluidity of ⁴he confined in nanoporous media |
| topic | Жидкий гелий |
| topic_facet | Жидкий гелий |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/116915 |
| work_keys_str_mv | AT shirahamak superfluidityof4heconfinedinnanoporousmedia AT yamamotok superfluidityof4heconfinedinnanoporousmedia AT shibayamay superfluidityof4heconfinedinnanoporousmedia |