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Digitale Medien

Search for superfluid Josephson effect

Trautmann, C. ; Spohr, R. ; Vetter, J. ; [weitere]

Amsterdam : Elsevier

International Journal of Radiation Applications & Instrumentation. Part D, 19 (1991), S. 967-970

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ISSN: 1359-0189

Schlagwort(e): Josephson effect ; SQUID sensor ; Superfluid helium ; coherence length ; polycarbonate foil ; pressure sensor ; rotation sensor ; weak link

Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Thema: Elektrotechnik, Elektronik, Nachrichtentechnik , Physik

Materialart: Digitale Medien

URL: http://linkinghub.elsevier.com/retrieve/pii/1359-0189(91)90352-I

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Digitale Medien

Spin-spin interaction and multiple spin-echoes in AuIn2 (1995)

Wagner, Th. ; Götz, S. ; Masuhara, N. ; [weitere]

Springer

Journal of low temperature physics 101 (1995), S. 657-663

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ISSN: 1573-7357

Schlagwort(e): 76.60.-k ; 76.60.Lz

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract We investigated several AuIn2 samples of similar purity by spin-echo techniques. The temperatures and fields ranged from 0.5 to 20 mK and from 0.06 to 0.8 T, respectively. Our results are: The Knight-shift changed from sample to sample within about 5%. Spin-echoes could not be found in all samples. T2 ranged from about 40 μs in one sample, to a temperature and field independent T2 = 83 μs for another sample, to a field and temperature dependent T2 which varied for this sample from 2 ms at low B/Tn-values (∼5 T/K) to 0.3 ms at B/Tn ∼300. We have shown that the temperature of the conduction electron system is the relevant temperature in the problem, and not the nuclear spin-temperature of In. From the amplitudes of multiple spin-echo structures we conclude that demagnetizing fields are not the only origin for their occurrence.