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| 2. |
- MAY, F, et al.
(författare)
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AN ANGLE-DEPENDENT MAGNETIC CIRCULAR X-RAY DICHROISM STUDY OF CO/CU(100) - EXPERIMENT VERSUS THEORY
- 1995
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Ingår i: JOURNAL OF PHYSICS-CONDENSED MATTER. - : IOP PUBLISHING LTD. - 0953-8984. ; 7:6, s. 1111-1119
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Values for the magnetic moments of 3d transition metals have been calculated from magnetic circular x-ray dichroism measurements using sum rules. In this work we reveal that these calculations are sensitive to a damping effect resulting from a decrease in
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| 3. |
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| 4. |
- TISCHER, M, et al.
(författare)
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LOCAL MAGNETISM AND ELEMENT-SPECIFIC SUSCEPTIBILITY FOR NI/CU(100)
- 1995
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Ingår i: VACUUM. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0042-207X. ; 46:8-10, s. 1211-1214
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We report magnetic circular X-ray dichroism (MCXD) measurements of ultrathin Ni films grown on Cu(?OO). The Curie temperature of the films is determined by means of a.c. MXCD susceptibility, a technique that allows T-c to be probed precisely and unambiguo
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| 5. |
- May, F, et al.
(författare)
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Magnetic coupling of Ni, Cu and Co bi- and trilayers probed by magnetic circular X-ray dichroism
- 1997
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Ingår i: JOURNAL DE PHYSIQUE IV. - : EDITIONS PHYSIQUE. - 1155-4339. ; 7:C2, s. 389-395
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Using magnetic circular X-ray dichroism (MCXD), Co/Ni, Cu/Co and Cu/Ni bilayers and Co/Cu/Ni and Ni/Cu/Co trilayers grown on a Cu(001) substrate were investigated. The Co layers were about 2 monolayers (Mi,) and the Ni layers were between 1.5 and 4.5 ML t
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| 6. |
- Schierle, Gabriele, et al.
(författare)
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Neuronal death in nigral grafts in the absence of poly (ADP-ribose) polymerase activation
- 1999
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Ingår i: NeuroReport. - 1473-558X. ; 10:16, s. 3347-3351
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Tidskriftsartikel (refereegranskat)abstract
- The exact causes of the extensive cell death in nigral transplants are still unknown. Since poly-(ADP-ribose) polymerase (PARP) overactivation has been implicated in neuronal death, we examined the effects of PARP on the survival of nigral grafts by using donor tissue from PARP knock-out or wild-type mice. Eight hours after preparation of the nigral cell suspension, cell damage was quantified by measurement of lactate dehydrogenase release, DNA fragmentation and caspase activation. At this stage, PARP deletion had no protective effect. Moreover, neither the survival of transplanted dopaminergic neurons, nor the functional recovery of hemiparkinsonian graft recipients were improved by the absence of PARP. We conclude that cell death in embryonic nigral grafts is not affected by the absence of PARP activation.
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| 7. |
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| 8. |
- TISCHER, M, et al.
(författare)
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ENHANCEMENT OF ORBITAL MAGNETISM AT SURFACES - CO ON CU(100)
- 1995
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Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 75:8, s. 1602-1605
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- By combining magnetic circular x-ray dichroism experiments with first principles electronic structure calculations, we demonstrate that the orbital contribution to magnetism can be strongly enhanced at surfaces. This effect is illustrated for Co grown on
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| 9. |
- Wende, H, et al.
(författare)
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Bond length and adsorbate vibrations of (2x3)N/Cu(110): A SEXAFS study
- 1996
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Ingår i: PHYSICAL REVIEW B-CONDENSED MATTER. - : AMER INST PHYSICS. - 0163-1829. ; 54:8, s. 5920-5926
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Temperature- and angle-dependent surface-extended x-ray-absorption fine-structure (SEXAFS) measurements on the system (2X3)N/Cu(110) are reported. Three inequivalent adsorption sites of the N atoms within the surface unit cell are identified. The successf
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| 10. |
- Wende, H, et al.
(författare)
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Surface atomic-XAFS for nitrogen atoms on copper
- 1997
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Ingår i: JOURNAL DE PHYSIQUE IV. - : EDITIONS PHYSIQUE. - 1155-4339. ; 7:C2, s. 211-212
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The presence of oscillatory structures in the atomic x-ray absorption background is reported for the first time for surface EXAFS of c(2x2)NiCu(100) and (2x3)N/Cu(110). The experimental data for N/Cu(110) are compared to FEFF7 calculations of the oscillat
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