| Annual Report ONR AASERT Grant Number N00014-93-1-1134 under ONR parent Grant Number N00014-89-J-1565 |
14 SEP 94 |
4 pages |
| Authors:
M. Tinkham; HARVARD UNIV CAMBRIDGE MA DEPT OF PHYSICS
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 | The specific project demonstrates the photon-assisted tunneling process across the Coulomb blockade energy gap in mesoscopic tunnel junctions. Photon-assisted tunneling is well established in conventional macroscopic tunnel junctions, and forms the basis of very sensitive millimeter wave detectors for astrophysics applications. In this case, the photon supply the energy needed to tunnel in the presence of the superconducting energy gap, which is a single- particle property. We are trying to ... |
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| Fundamental Processes in Superconducting Weak Links |
31 DEC 88 |
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| Authors:
M. Tinkham; HARVARD COLL CAMBRIDGE MA PRESIDENT AND FELLOWS
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 | The work accomplished under this contract largely concerns the properties of superconducting weak links, in the form of either small area oxide-barrier tunnel junctions or of SNS weak links, both of which form Josephson junctions. Two reports concern the response of tunnel junctions to far-infrared radiation, 22 elucidating the response under conditions suitable for mixer and detector applications, and 25 identifying the regimes in which chaotic noise makes the driven ... |
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| Joint Services Electronics Program |
30 SEP 87 |
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| Authors:
M. Tinkham; HARVARD UNIV CAMBRIDGE MA DIV OF APPLIED SCIENCES
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| An annual report of the JSEP (Joint Services Electronics Program) in solid state electronics, quantum electronics, information electronics, control and optimization, and electromagnetic phenomena is presented. Results of the research to date are summarized and significant accomplishments are discussed. |
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| Joint Services Electronics Program |
31 DEC 86 |
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| Authors:
M. Tinkham; HARVARD UNIV CAMBRIDGE MA DIV OF APPLIED SCIENCES
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| An annual report of the JSEP (Joint Services Electronics Program) in solid state electronics, quantum electronics, information electronics, control and optimization, and electromagnetic phenomena is presented. Results of the research to date are summarized and significant accomplishments are discussed. Keywords include: Solid state electronics, quantum electronics, information and control electronics, optimization, and electromagnetic phenomena. |
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| Joint Services Electronics Program |
31 DEC 85 |
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| Authors:
M. Tinkham; HARVARD UNIV CAMBRIDGE MA DIV OF APPLIED SCIENCES
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| This annual report of the JSEP (Joint Services Electronic Program) in solid state electronics, quantum electronics, information electronics, control and optimization, and electromagnetic phenomenon is presented. Results of the research to date are summarized and significant accomplishments are discussed. |
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| Joint Services Electronics Program |
31 MAR 85 |
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| Authors:
M. Tinkham; HARVARD UNIV CAMBRIDGE MA DIV OF APPLIED SCIENCES
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| An annual report of the JSEP (Joint Services Electronic Program) in solid state electronics, quantum electronics, information electronics control and optimization and electromagnetic phenomenon is presented. Results of the research to date are summarized and significant accomplishments are discussed. Keywords include: Solid state electronics, quantum electronics, information and control electronics, optimization, and electromagnetic phenomena. |
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| Characterization of Niobium Point Contacts Showing Josephson Effects in the Far Infrared. |
SEP 1978 |
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| Authors:
D. A. Weitz; W. J. Skocpol; M. Tinkham; HARVARD UNIV CAMBRIDGE MASS DEPT OF PHYSICS
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| Superconductors, Magnetic Detectors and Magnetic Electronics. |
10 NOV 1976 |
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| Authors:
M. Tinkham; HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS
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| This report covers work in opening up the far infrared to useful application in the study of solids: finding and studying the energy gap in superconductors, first observation of antiferromagnetic resonance and exchange resonances in the far infrared, first observation of the temperature-dependent soft mode in ferroelectric crystals, first observation of the far-infrared absorption due to random charge in disordered systems, the effect of magnetic fields in creating gapless superconductors ... |
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| ARPA Semiannual Technical Report, Materials Science, |
15 DEC 1973 |
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| Authors:
N. Bloembergen; B. Budiansky; J. W. Hutchinson; J. L. Sanders Jr.; M. Tinkham; HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS
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| This paper has been accepted for publication in the February 1974 issue of the IEEE Journal of Quantum Electronics. It shows the need for further experimental data on induced electric breakdown as a function of wavelength and pulse duration. Consequently a reliable, high power, mode-locked Nd-Yag laser system is being assembled to provide single diffraction limited picosecond pulses, with frequency doubling to green and ultraviolet wave lengths. Details of progress ... |
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| SUBCENTIMETER WAVELENGTHS. |
01 OCT 1964 |
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| Authors:
M. Tinkham; CALIFORNIA UNIV BERKELEY
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| Developments on far infrared techniques, applying them to a variety of solidstate physics problems, and also pursuing additional experiments on superconductivity with techniques other than far infrared absorption were undertaken. |
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| MAGNETIC PROPERTIES OF THE CANTED ANTIFERROMAGNET ALPHA-COSO4, |
27 MAY 1964 |
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| Authors:
I. F. Silvera; J. H. M. Thornley; M. Tinkham; CALIFORNIA UNIV BERKELEY
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| It is known from neutron scattering experiments that alpha-CoSO4 is a four-sublattice canted antiferromagnet with no net magnetic moment. In this paper the magnetic properties of this material are analyzed using a model in which an isotropic fictitious spin of 1/2 is assigned to each Co(++) ion. The large canting angle of 25 degrees is interpreted in terms of antisymmetric terms in the Hamiltonian due to anisotropic superexchange and the ... |
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| FAR INFRARED ANTIFERROMAGNETIC RESONANCE IN MnO AND NiO, |
1963 |
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| Authors:
A.J. Sievers; M. Tinkham; CALIFORNIA UNIV BERKELEY
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| The uniaxial dipolar anisotropy in antiferro magnetic MnO and NiO aligns the two opposing sublattice moments in an easy (111) plane. The two normal modes for small oscillations of the sublattice magnetizations about a preferred direction within this plane are both nondegenerate and linearly polarized. The high frequency mode has been observed at low temperatures (2 K) at 27.5 and 36.6 cm in MnO and NiO, respectively. In agreement with ... |
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| EFFECT OF MAGNETIC FIELD ON THERMAL CONDUCTIVITY AND ENERGY GAP OF SUPERCONDUCTING FILMS, |
27 APR 1961 |
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| Authors:
D. E. Morris; M. Tinkham; CALIFORNIA UNIV BERKELEY
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| The change in the thermal conductivity of superconducting tin and indium films was measured upon application of a magnetic field in the plane of the film. These experiments were undertaken to explore the dependence of the energy gap and the penetration depth upon magnetic field, and to determine the thermodynamic order of the field-induced superconducting transition in films. |
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Reports by Author
