Melting of the Na Layers in Solid Na_0.8CoO₂

By M. Weller (picture/ETHZ), A. Sacchetti, H. R. Ott, K. Mattenberger, and B. Batlogg
Phys. Rev. Lett. 102, 056401 (2009) - [ link ]

Lack of Evidence for Orbital-Current Effects in the High-Temperature Y₂Ba₄Cu₇O_15-δ Superconductor using ^₈₉Y Nuclear Magnetic Resonance

By S. Strässle, J. Roos, M. Mali, and H. Keller (picture/UniZH).
Phys. Rev. Lett. 101, 237001 (2008) - [ link ]

Evidence for a Competition between the Superconducting State and the Pseudogap State of (BiPb)₂(SrLa)₂CuO_6+δ from Muon Spin Rotation Experiments

By R. Khasanov, Takeshi Kondo, S. Strässle (UniZH), D. O. G. Heron, A. Kaminski, H. Keller, S. L. Lee, and Tsunehiro Takeuchi.
Phys. Rev. Lett. 101, 227002 (2008) - [ link ]

Oxygen Isotope Effects on the Superconducting Transition and Magnetic States Within the Phase Diagram of Y_1-xPr_xBa₂Cu₃O_7-δ

By R. Khasanov, A. Shengelaya, D. Di Castro, E. Morenzoni (picture/UniZH), A. Maisuradze, I. M. Saviæ, K. Conder, E. Pomjakushina, A. Bussmann-Holder, and H. Keller.
Phys. Rev. Lett. 101, 077001 (2008) - [ link ]

Physical Review B

Field-controlled magnetic order in the quantum spin-ladder system (Hpip)₂CuBr₄

By B. Thielemann (PSI), Ch. Rüegg, K. Kiefer, H. M. Ronnow, B. Normand, P. Bouillot, C. Kollath, E. Orignac, R. Citro, T. Giamarchi, A. M. Läuchli, D. Biner, K. W. Krämer, F. Wolff-Fabris, V. S. Zapf, M. Jaime, J. Stahn, N. B. Christensen, B. Grenier, D. F. McMorrow, and J. Mesot.
Phys. Rev. B 79, 020408(R) (2009) - [ link ]

Modifying the electronic structure of semiconducting single-walled carbon nanotubes by Ar^₊ ion irradiation

By Antti Tolvanen, Gilles Buchs (picture/EMPA), Pascal Ruffieux, Pierangelo Gröning, Oliver Gröning, and Arkady V. Krasheninnikov.
Phys. Rev. B 79, 125430 (2009) - [ link ]

Electron doping and superconductivity in the two-dimensional Hubbard model

By D. Eichenberger (picture/UniFR) and D. Baeriswyl
Phys. Rev. B 79, 100510(R) (2009) - [ link ]

Infrared spectroscopy of electronic bands in bilayer graphene

By A. B. Kuzmenko (picture/UniGE), E. van Heumen, and D. van der Marel, P. Lerch, P. Blake, K. S. Novoselov, and A. K. Geim.
Phys. Rev. B 79, 115441 (2009) - [ link ]

Spontaneous exciton condensation in 1T-TiSe2: BCS-like approach

By C. Monney (picture/UniFR), H. Cercellier, F. Clerc, C. Battaglia, E. F. Schwier, C. Didiot, M. G. Garnier, H. Beck, and P. Aebi, H. Berger and L. Forró, L. Patthey.
Phys. Rev. B 79, 045116 (2009) - [ link ]

Superconductivity at 23 K and low anisotropy in Rb-substituted BaFe₂As₂ single crystals

By Z. Bukowski (picture/UniZH), S. Weyeneth, R. Puzniak, P. Moll, S. Katrych, N. D. Zhigadlo, and J. Karpinski H. Keller, B. Batlogg.
Phys. Rev. B 79, 104521 (2009) - [ link ]

Long-range charge order in the low-temperature insulating phase of PrNiO₃

By M. Medarde (picture/PSI), M. T. Fernández-Díaz, and Ph. Lacorre.
Phys. Rev. B 78, 212101 (2008) - [ link ]

Physical Review A

Quantum simulation of the Hubbard model: The attractive route

By A. F. Ho, M. A. Cazalilla, and T. Giamarchi (picture/UniGE).
Phys. Rev. A 79, 033620 (2009) - [ link ]

Journal of Condensed Matter Physics

Atomic imaging of thin films with surface x-ray diffraction: introducing DCAF

By M Björck, C M Schlepütz, S A Pauli, D Martoccia, R Herger and P R Willmott (PSI)
J. Phys.: Condens. Matter 20 (2008) 445006 - [ link ]

Journal of Superconductivity and Novel Magnetism

Polaron Coherence as Origin of the Pseudogap Phase in High Temperature Superconducting Cuprates

By A. Bussmann-Holder, H. Keller (UniZH), A.R. Bishop, A. Simon, K.A. Müller.
J Supercond Nov Magn (2008) 21: 353–357 - [ link ]

Evidence for Two Distinct Anisotropies in the Oxypnictide Superconductors SmFeAsO0.8F0.2 and NdFeAsO0.8F0.2

By S.Weyeneth (picture/UniZH), R. Puzniak, N.D. Zhigadlo, S. Katrych, Z. Bukowski, J. Karpinski, H. Keller.
J Supercond Nov Magn (2009) 22: 347–351 - [ link ]

Anisotropy of Superconducting Single Crystal SmFeAsO0.8F0.2 Studied by Torque Magnetometry

By S.Weyeneth (UniZH), R. Puzniak, U. Mosele, N.D. Zhigadlo, S. Katrych, Z. Bukowski, J. Karpinski, S. Kohout, J. Roos, H. Keller.
J Supercond Nov Magn (2009) 22: 325–329 - [ link ]

Materials Today

Jahn–Teller physics and high-Tc superconductivity

By Hugo Keller (UniZH), Annette Bussmann-Holder, and K. Alex Müller.
Materials Today, Volume 11, Issue 9, September 2008, Pages 38-46 - [ link ]

Applied Physics Letters

Defect-induced negative differential resistance in single-walled carbon nanotubes

By G. Buchs (EMPA), P. Ruffieux, P. Gröning, and O. Gröning.
Appl. Phys. Lett. 93, 073115 (2008) - [ link ]

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