TY  - JOUR
A1  - de Jong, S.
A1  - Kukreja, R.
A1  - Trabant, C.
A1  - Pontius, N.
A1  - Chang, C. F.
A1  - Kachel, T.
A1  - Beye, Martin
A1  - Sorgenfrei, Nomi
A1  - Back, C. H.
A1  - Braeuer, B.
A1  - Schlotter, W. F.
A1  - Turner, J. J.
A1  - Krupin, O.
A1  - Doehler, M.
A1  - Zhu, D.
A1  - Hossain, M. A.
A1  - Scherz, A. O.
A1  - Fausti, D.
A1  - Novelli, F.
A1  - Esposito, M.
A1  - Lee, W. S.
A1  - Chuang, Y. D.
A1  - Lu, D. H.
A1  - Moore, R. G.
A1  - Yi, M.
A1  - Trigo, M.
A1  - Kirchmann, P.
A1  - Pathey, L.
A1  - Golden, M. S.
A1  - Buchholz, Marcel
A1  - Metcalf, P.
A1  - Parmigiani, F.
A1  - Wurth, W.
A1  - Föhlisch, Alexander
A1  - Schuessler-Langeheine, Christian
A1  - Duerr, H. A.
T1  - Speed limit of the insulator-metal transition in magnetite
JF  - Nature materials
N2  - As the oldest known magnetic material, magnetite (Fe3O4) has fascinated mankind for millennia. As the first oxide in which a relationship between electrical conductivity and fluctuating/localized electronic order was shown(1), magnetite represents a model system for understanding correlated oxides in general. Nevertheless, the exact mechanism of the insulator-metal, or Verwey, transition has long remained inaccessible(2-8). Recently, three- Fe- site lattice distortions called trimeronswere identified as the characteristic building blocks of the low-temperature insulating electronically ordered phase(9). Here we investigate the Verwey transition with pump- probe X- ray diffraction and optical reflectivity techniques, and show how trimerons become mobile across the insulator-metal transition. We find this to be a two- step process. After an initial 300 fs destruction of individual trimerons, phase separation occurs on a 1.5 +/- 0.2 ps timescale to yield residual insulating and metallic regions. This work establishes the speed limit for switching in future oxide electronics(10).
Y1  - 2013
U6  - https://doi.org/10.1038/NMAT3718
SN  - 1476-1122
SN  - 1476-4660
VL  - 12
IS  - 10
SP  - 882
EP  - 886
PB  - Nature Publ. Group
CY  - London
ER  - 
TY  - JOUR
A1  - Warschburger, Petra
A1  - Buchholz, H. T.
A1  - von Schwerin, A.-D.
A1  - Petermann, Franz
T1  - Psychological adjustment in parents of young children with atopic dermatitis : which factors predict parental quality of life?
N2  - Background Bringing up children with atopic dermatitis (AD) is widely perceived as being stressful because parenting demands considerable time and energy. There have been only a few studies to assess the extent of problems experienced by the parents. Objective To assess the psychosocial well-being of parents caring for a young child with AD and to examine the relationship between parental quality of life and disease-related and sociodemographic variables. Methods One hundred and eighty-seven parents of young children with AD attending an inpatient rehabilitation clinic participated in the study. At admission, parents completed a set of questionnaires (assessing health-related quality of life, coping with the disease, family functioning). Dermatologists assessed disease severity using the severity scoring of AD index (SCORAD). Results In general, parents cope well with their situation. Compared with normal values, high rates of psychological distress were observed in a subsample of parents of children with AD. Parents of children with a higher severity of disease reported a significantly higher impact on family functioning, a greater financial burden and a higher level of disease management. Parental disease management could be predicted by the familial situation, their personal well-being and the severity of disease of their child. Differences attributed to their child's gender or age were not observed. Conclusions Childhood AD has a profound impact on the emotional and social well-being of many of the parents. The results underline the importance of psychological treatment approaches designed to increase parental well-being and ability to cope with stress and social strain
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Warschburger, Petra
A1  - von Schwerin, A.-D.
A1  - Buchholz, H. T.
A1  - Petermann, Franz
T1  - An educational program for parents of asthmatic preschool children: Short and medium-Term Effects.
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Warschburger, Petra
A1  - von Schwerin, A.-D.
A1  - Buchholz, H. T.
A1  - Petermann, Franz
T1  - Eine Skala zur Erfassung von elterlicher Selbstwirksamkeitserwartungen im Umgang mit dem Asthma ihres Kindes
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Buchholz, H. T.
A1  - Warschburger, Petra
T1  - SEND : eine Skala zur Erhebung der spezifischen Selbstwirksamkeit von Eltern neurodermitiskranker Vorschulkinder
Y1  - 2003
ER  -