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Van Veldhoven, E. (author), Sidorkin, V. (author), Chen, P. (author), Alkemade, P. (author), Van der Drift, E. (author), Salemink, H. (author), Zandbergen, H. (author), Maas, D. (author)
journal article 2010
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Zandbergen, H.W. (author), Song, B. (author), Rudneva, M. (author), Van Huis, M.A. (author)
journal article 2010
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Fang, C.M. (author), Sluiter, M.H.F. (author), Van Huis, M.A. (author), Ande, C.K. (author), Zandbergen, H.W. (author)
A long-standing challenge in physics is to understand why cementite is the predominant carbide in steel. Here we show that the prevalent formation of cementite can be explained only by considering its stability at elevated temperature. A systematic highly accurate quantum mechanical study was conducted on the stability of binary iron carbides....
journal article 2010
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Giang, N. (author), Xu, Q. (author), Hor, Y.S. (author), Williams, A.J. (author), Dutton, S.E. (author), Zandbergen, H.W. (author), Cava, R.J. (author)
The structural misfit compound (PbSe)1.16(TiSe2)2 is reported. It is a superconductor with a Tc of 2.3 K. (PbSe)1.16(TiSe2)2 derives from a parent compound, TiSe2, which shows a charge-density wave transition and no superconductivity. The crystal structure, characterized by high-resolution electron microscopy and powder x-ray diffraction,...
journal article 2010
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Van den Hout, M. (author), Hall, A.R. (author), Wu, M.Y. (author), Zandbergen, H.W. (author), Dekker, C. (author), Dekker, N.H. (author)
Solid-state nanopores are considered a promising tool for the study of biological polymers such as DNA and RNA, due largely to their flexibility in size, potential in device integration and robustness. Here, we show that the precise shape of small nanopores (?5 nm diameter in 20 nm SiN membranes) can be controlled by using transmission electron...
journal article 2010
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Hor, Y.S. (author), Williams, A.J. (author), Checkelsky, J.G. (author), Roushan, P. (author), Seo, J. (author), Xu, Q. (author), Zandbergen, H.W. (author), Yazdani, A. (author), Ong, N.P. (author), Cava, R.J. (author)
Bi2Se3 is one of a handful of known topological insulators. Here we show that copper intercalation in the van der Waals gaps between the Bi2Se3 layers, yielding an electron concentration of ?2×1020??cm-3, results in superconductivity at 3.8 K in CuxBi2Se3 for 0.12?x?0.15. This demonstrates that Cooper pairing is possible in Bi2Se3 at accessible...
journal article 2010
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Fang, C.M. (author), Van Huis, M.A. (author), Zandbergen, H.W. (author)
The iron carbide Fe7C3 exhibits two types of basic crystal structures, an orthorhombic (o-) form and a hexagonal (h-) one. First-principles calculations have been performed for the basic Fe7C3 forms and for the related ?-Fe3C cementite phase. Accurate total-energy calculations show that the stability of Fe7C3 is comparable to that of ?-Fe3C. The...
journal article 2009
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Holman, K.L. (author), McQueen, T.M. (author), Williams, A.J. (author), Klimczuk, T. (author), Stephens, P.W. (author), Zandbergen, H.W. (author), Xu, Q. (author), Ronning, F. (author), Cava, R.J. (author)
Although many materials display the transition from insulating to metallic behavior on doping, only a few, such as VO2, have the right combination of crystal structure and physical properties to serve as model systems. Here we report the electronic and structural characteristics of the insulator to metal transition in V1?xMoxO2, which we have...
journal article 2009
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McQueen, T.M. (author), Huang, Q. (author), Ksenofontov, V. (author), Felser, C. (author), Xu, Q. (author), Zandbergen, H. (author), Hor, Y.S. (author), Allred, J. (author), Williams, A.J. (author), Qu, D. (author), Checkelsky, J. (author), Ong, N.P. (author), Cava, R.J. (author)
The recently discovered iron arsenide superconductors appear to display a universal set of characteristic features, including proximity to a magnetically ordered state and robustness of the superconductivity in the presence of disorder. Here we show that superconductivity in Fe1+?Se, which can be considered the parent compound of the...
journal article 2009
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Wagner, K.E. (author), Morosan, E. (author), Hor, Y.S. (author), Tao, J. (author), Zhu, Y. (author), Sanders, T. (author), McQueen, T.M. (author), Zandbergen, H.W. (author), Williams, A.J. (author), West, D.V. (author), Cava, R.J. (author)
We report the characterization of layered 2H-type CuxTaS2 for 0?x?0.12. The charge density wave (CDW), at 70 K for TaS2, is destabilized with Cu doping. The sub-1 K superconducting transition in undoped 2H-TaS2 jumps quickly to 2.5 K at low x, increases to 4.5 K at the optimal composition Cu0.04TaS2, and then decreases at higher x. The...
journal article 2008
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Heersche, H.B. (author), Lientschnig, G. (author), O'Neill, K. (author), Van der Zant, H.S.J. (author), Zandbergen, H.W. (author)
The authors imaged electromigration-induced nanogap formation in situ by transmission electron microscopy. Real-time video recordings show that edge voids form near the cathode side. The polycrystalline gold wires narrow down until a single-grain boundary intersects the constriction along which the breaking continues. During the last 50?ms of...
journal article 2007
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Zandbergen, H.W. (author), Pao, C.W. (author), Srolovitz, D.J. (author)
journal article 2007
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Van Huis, M.A. (author), Sluiter, M.H.F. (author), Chen, J.H. (author), Zandbergen, H.W. (author)
journal article 2007
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Morosan, E. (author), Zandbergen, H.W. (author), Li, L. (author), Lee, M. (author), Checkelsky, J.G. (author), Heinrich, M. (author), Siegrist, T. (author), Ong, N.P. (author), Cava1, R.J. (author)
journal article 2007
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Pao, C.W. (author), Srolovitz, D.J. (author), Zandbergen, H.W. (author)
journal article 2007
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Bos, J.W.G. (author), Zandbergen, H.W. (author), Lee, M.H. (author), Ong, N.P. (author), Cava, R.J. (author)
journal article 2007
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Lau, G.C. (author), Freitas, R.S. (author), Ueland, B.G (author), Dahlberg, M.L. (author), Huang, Q. (author), Zandbergen, H.W. (author), P. Schiffer, P. (author), Cava1, R.J. (author)
journal article 2007
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Klimczuk, T. (author), Xu, Q. (author), Morosan, E. (author), Thompson, J.D. (author), Zandbergen, H.W. (author), Cava, R.J. (author)
Mg10Ir19B16, a previously unreported compound in the Mg-Ir-B chemical system, is found to be superconducting at temperatures near 5 K. The fact that the compound exhibits a range of superconducting temperatures between 4 and 5 K suggests that a range of stoichiometries is allowed, though no structural evidence for this is observed. The compound...
journal article 2006
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Bos, J.W.G. (author), Lee, M. (author), Morosan, E. (author), Zandbergen, H.W. (author), Lee, W.L. (author), Ong, N.P. (author), Cava, R.J. (author)
Ferromagnetism is observed below 10 K in [Bi0.75Te0.125Mn0.125]Te. This material has the BiTe structure, which is made from the stacking of two Te-Bi-Te-Bi-Te blocks and one Bi-Bi block per unit cell. Crystal structure analysis shows that Mn is localized in the Bi2 blocks, and is accompanied by an equal amount of TeBi antisite occupancy in the...
journal article 2006
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Balicas, L. (author), Analytis, J.G. (author), Jo, Y.J. (author), Storr, K. (author), Zandbergen, H. (author), Xin, Y. (author), Hussey, N.E. (author), Chou, F.C. (author), Lee, P.A. (author)
Shubnikov–de Haas oscillations for two well-defined frequencies, corresponding, respectively, to areas of 0.8 and 1.36% of the first Brillouin zone, were observed in single crystals of Na0.3CoO2. The existence of Na superstructures in Na0.3CoO2, coupled with this observation, suggests the possibility that the periods are due to the...
journal article 2006
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