Zobrazeno 1 - 10
of 22
pro vyhledávání: '"F. P. Milliken"'
Publikováno v:
Physical Review B. 62:9143-9147
Autor:
S. Yoshizumi, Roger H. Koch, K.-Y. Yang, H.S. Trammell, F. P. Milliken, James R. Rozen, M.S. Dilorio, D.K. Lathrop, D. Haran, Shwetank Kumar, S. G. Haupt
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 9:4428-4431
We have developed sensitive highly reliable high-T/sub c/ SQUID magnetometers a reproducible SNS junction fabrication process. In order to enable unshielded operation in the earth's field, we have incorporated flux dams into direct-coupled SQUID magn
Autor:
William J. Gallagher, D. K. Lathrop, Roger H. Koch, Stephen L. Brown, R. A. Altman, S. G. Haupt, F. P. Milliken
Publikováno v:
Journal of Applied Physics. 82:6301-6305
We have investigated the response of the flux-locked output of several high-Tc SQUID magnetometers to small changes in temperature and for magnetic fields 0–30 μT. The temperature response DT≡dΦS/dT is observed to be linear in the applied magne
Autor:
S. G. Haupt, Roger H. Koch, William J. Gallagher, R. Matthews, Jonathan Z. Sun, S. L. Brown, D.K. Lathrop, F. P. Milliken, R. A. Altman
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 7:2319-2322
A number of materials related problems have hindered the development of a reproducible process for the fabrication of high-quality SQUIDs and magnetometers. In this paper we discuss the use of GdBa/sub 2/Cu/sub 3/O/sub 7/ and YBa/sub 2/Cu/sub 3/O/sub
Publikováno v:
Solid State Communications. 97:309-313
We have studied the transmission through a point contact in a gated GaAsAlGaAs heterostructure. At the v = 1 3 quantum Hall plateau measurements of the tunneling conductance exhibit non-Fermi liquid like resonance properties. The temperature depen
Publikováno v:
Applied Physics Letters. 85:5941-5943
We have measured the subgap current at 0.8 K in several hysteretic 1.5×1.6 and 2.6×2.6μm2 Nb∕AlOx∕Nb tunnel junctions. In zero magnetic field, the critical current Ic∼8μA and the subgap resistance R∼0.3MΩ. When we apply a magnetic field,
Autor:
J. M. Hong, Dieter P. Kern, K. Milkove, M. deFranza, V. Boegli, F. P. Milliken, Uri Sivan, S. Rishton, Young H. Lee
Publikováno v:
Europhysics Letters (EPL). 25:605-611
A novel spectrometer is employed to study the spectrum of heavily doped quantum dots. A single-particle discrete spectrum is found to exist only in close vicinity to the Fermi energy. Levels further away are broadened beyond the average level spacing
Publikováno v:
Surface Science. 305:516-519
We have studied tunneling transport through a high-mobility two-dimensional electron gas in a GaSb/AlSb/ InAs/AlSb/GaSb heterostructure. In high perpendicular magnetic fields and at temperatures below 1 K the tunneling conductance shows deviations fr
Publikováno v:
Applied Physics Letters. 71:1857-1859
We have measured the noise of several directly coupled high Tc superconducting quantum interference device (SQUID) magnetometers as we change a static magnetic field B while the devices are superconducting. Devices without “flux dams” show an inc
Autor:
M de Franza, S. Rishton, Dieter P. Kern, Young H. Lee, Uri Sivan, F. P. Milliken, J. M. Hong, K. Milkove, V. Boegli
Publikováno v:
Physica Scripta. :446-448
The spectrum of heavily doped quantum dots is found to be discrete only in close vicinity to the Fermi energy. Levels further away are broadened beyond the average level spacing and merge to form a quasi-continuous spectrum. This breakdown of a singl