Search Results - "Von Bergmann, K."

Stability of single skyrmionic bits by Hagemeister, J., Romming, N., von Bergmann, K., Vedmedenko, E. Y., Wiesendanger, R.

“…The switching between topologically distinct skyrmionic and ferromagnetic states has been proposed as a bit operation for information storage. While long…”
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Chiral magnetic order at surfaces driven by inversion asymmetry by Heinze, S, Ferriani, P, Bode, M, Bihlmayer, G, Heide, M, Kubetzka, A, Wiesendanger, R, Pietzsch, O, Blügel, S, von Bergmann, K

“…Chirality is a fascinating phenomenon that can manifest itself in subtle ways, for example in biochemistry (in the observed single-handedness of biomolecules)…”
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Atomic spin structure of antiferromagnetic domain walls by Bode, M, Vedmedenko, E. Y, von Bergmann, K, Kubetzka, A, Ferriani, P, Heinze, S, Wiesendanger, R

“…The search for uncompensated magnetic moments on antiferromagnetic surfaces is of great technological importance as they are responsible for the exchange-bias…”
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Conical spin-spiral state in an ultrathin film driven by higher-order spin interactions by Yoshida, Y, Schröder, S, Ferriani, P, Serrate, D, Kubetzka, A, von Bergmann, K, Heinze, S, Wiesendanger, R

“…We report a transverse conical spin spiral as the magnetic ground state of a double-layer Mn on a W(110) surface. Using spin-polarized scanning tunneling…”
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Symmetry breaking in spin spirals and skyrmions by in-plane and canted magnetic fields by Schmidt, L, Hagemeister, J, Hsu, P-J, Kubetzka, A, von Bergmann, K, Wiesendanger, R

“…The influence of in-plane and canted magnetic fields on spin spirals and skyrmions in atomic bilayer islands of palladium and iron on an Ir(111) substrate is…”
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Giant magnetization canting due to symmetry breaking in zigzag Co chains on Ir(001) by Dupé, B, Bickel, J E, Mokrousov, Y, Otte, F, Bergmann, K von, Kubetzka, A, Heinze, S, Wiesendanger, R

“…We demonstrate a canted magnetization of biatomic zigzag Co chains grown on the (5 × 1) reconstructed Ir(001) surface using density functional theory (DFT)…”
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Metabolism and drug interactions of 3-hydroxy-3-methylglutaryl coenzyme A-reductase inhibitors (statins) by IGEL, M, SUDHOP, T, VONBERGMANN, K

“…3-Hydroxy-3-methylglutaryl coenzyme A (HMG-CoA)-reductase inhibitors (statins) are mainly considered for long-term use and often constitute part of a…”
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Observation of a complex nanoscale magnetic structure in a hexagonal Fe monolayer by von Bergmann, K, Heinze, S, Bode, M, Vedmedenko, E Y, Bihlmayer, G, Blügel, S, Wiesendanger, R

“…We have observed a novel magnetic structure in the pseudomorphic Fe monolayer on Ir(111). Using spin-polarized scanning tunneling microscopy we find a…”
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Polymorphism in the cholesterol 24S-hydroxylase gene is associated with Alzheimer's disease by KÖLSCH, H, LÜTJOHANN, D, LUDWIG, M, SCHULTE, A, PTOK, U, JESSEN, F, VON BERGMANN, K, RAO, M. L, MAIER, W, HEUN, R

“…Cholesterol and 24S-hydroxycholesterol are involved in the pathogenesis of Alzheimer's disease (AD). Increased serum cholesterol concentrations have been…”
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24S-hydroxycholesterol in cerebrospinal fluid is elevated in early stages of dementia by Papassotiropoulos, A, Lütjohann, D, Bagli, M, Locatelli, S, Jessen, F, Buschfort, R, Ptok, U, Björkhem, I, von Bergmann, K, Heun, R

“…The brain is the most cholesterol-rich organ in the human body. Accumulation of excess cholesterol in hippocampal neurons promotes the cleavage of the amyloid…”
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Effects of statins on human cerebral cholesterol metabolism and secretion of Alzheimer amyloid peptide by FASSBENDER, K, STROICK, M, LÜTJOHANN, D, BERTSCH, T, RAGOSCHKE, A, KUEHL, S, WALTER, S, WALTER, J, BRECHTEL, K, MUEHLHAUSER, F, VON BERGMANN, K

“…Cerebral cholesterol metabolism has been linked with production of amyloid peptide (Abeta) crucial in AD. The association between use of cholesterol-lowering…”
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Stacking-Dependent Spin Interactions in Pd/Fe Bilayers on Re(0001) by Li, W, Paul, S, von Bergmann, K, Heinze, S, Wiesendanger, R

“…Using spin-polarized scanning tunneling microscopy and density functional theory, we have studied the magnetic properties of Pd/Fe atomic bilayers on Re(0001)…”
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The effect of simvastatin treatment on the amyloid precursor protein and brain cholesterol metabolism in patients with Alzheimer's disease by Hoglund, K, Thelen, K M, Syversen, S, Sjogren, M, von Bergmann, K, Wallin, A, Vanmechelen, E, Vanderstichele, H, Lutjohann, D, Blennow, K

“…During the last years, several clinical studies have been published trying to elucidate the effect of statin treatment on amyloid precursor protein (APP)…”
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Domain wall orientation in magnetic nanowires by Vedmedenko, E Y, Kubetzka, A, von Bergmann, K, Pietzsch, O, Bode, M, Kirschner, J, Oepen, H P, Wiesendanger, R

“…Scanning tunneling microscopy reveals that domain walls in ultrathin Fe nanowires are oriented along a certain crystallographic direction, regardless of the…”
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Comparison of the hepatic clearances of campesterol, sitosterol, and cholesterol in healthy subjects suggests that efflux transporters controlling intestinal sterol absorption also regulate biliary secretion by Sudhop, T, Sahin, Y, Lindenthal, B, Hahn, C, Lüers, C, Berthold, H K, von Bergmann, K

“…Background: Recently identified ABCG5/8 transporters are responsible in part for the different absorption rates of campesterol, sitosterol, and cholesterol…”
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Structure and magnetism of ultra-thin chromium layers on W(110) by Santos, B, Puerta, J M, Cerda, J I, Stumpf, R, von Bergmann, K, Wiesendanger, R, Bode, M, McCarty, K F, de la Figuera, J

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Genetic association of acyl-coenzyme A: cholesterol acyltransferase with cerebrospinal fluid cholesterol levels, brain amyloid load, and risk for Alzheimer's disease by WOLLMER, M. A, STREFFER, J. R, TSOLAKI, M, GRIMALDI, L. M. E, LÜTJOHANN, D, THAL, D, VON BERGMANN, K, NITSCH, R. M, HOCK, C, PAPASSOTIROPOULOS, A

“…A common polymorphism of the gene encoding acyl-coenzyme A: cholesterol acyltransferase 1 (SOAT1), which is involved in the regulation of beta-amyloid peptide…”
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Atomic-scale spin spiral with a unique rotational sense: Mn monolayer on W(001) by Ferriani, P, von Bergmann, K, Vedmedenko, E Y, Heinze, S, Bode, M, Heide, M, Bihlmayer, G, Blügel, S, Wiesendanger, R

“…Using spin-polarized scanning tunneling microscopy we show that the magnetic order of 1 monolayer Mn on W(001) is a spin spiral propagating along 110…”
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Combination of serum markers related to several mechanisms in Alzheimer’s disease by Teunissen, C.E., Lütjohann, D., von Bergmann, K., Verhey, F., Vreeling, F., Wauters, A., Bosmans, E., Bosma, H., van Boxtel, M.P.J., Maes, M., Delanghe, J., Blom, H.J., Verbeek, M.M., Rieckmann, P., De Bruijn, C., Steinbusch, H.W.M., de Vente, J.

“…Alzheimer’s disease (AD) probably involves several pathobiochemical mechanisms and this may be reflected by changes in different serum components. The present…”
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Effects of colesevelam HCl on sterol and bile acid excretion in patients with type IIa hypercholesterolemia by DONOVAN, J. M, VON BERGMANN, K, SETCHELL, K. D. R, ISAACSOHN, J, PAPPU, A. S, ILLINGWORTH, D. R, OLSON, T, BURKE, S. K

“…Colesevelam HCl is a potent bile acid-binding polymer. This study's aim was to determine effects of colesevelam HCl on sterol and bile acid excretion in…”
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