Person

Davor Pavuna

Related publications (101)

Direct angle resolved photoemission spectroscopy and superconductivity of strained high-T-c films

Davor Pavuna, Dominique Cloëtta, Claudia Cancellieri, Mike Abrecht

Since 1997 we systematically perform direct angle resolved photoemission spectroscopy (ARPES) on in-situ grown thin (

2008

Fermi surface determination from wavevector quantization in LaSrCuO films

Davor Pavuna, Claudia Cancellieri, Ping-Hui Lin

We have observed the wavevector quantization in LaSrCuO films thinner than 12 unit cells grown on SrTiO3 substrates. Low energy dispersions were determined in situ for different photon energies by angle resolved photoemission spectroscopy. From the wavevec ...

2008

Embedded polytypes in Bi2Sr2-xLaxCuO6 thin films grown by laser ablation

Davor Pavuna, Claudia Cancellieri, Ping-Hui Lin

We investigate the presence of secondary phases in La-doped Bi-2201 thin films grown by laser ablation. The cation ratios in the target material, the oxygen pressure, and the substrate temperature during the deposition are the main parameters determining t ...

2007

Three-dimensional dispersion induced by extreme tensile strain in La_(2−x)Sr_xCuO_4 films

Davor Pavuna, Slobodan Mitrovic, Dominique Cloëtta, Claudia Cancellieri, Mike Abrecht

The electronic band structure probed by angle-resolved photoemission spectroscopy on thin epitaxial La_(2−x)Sr_(x)CuO_(4) films under extreme tensile strain shows anomalous features compatible with c-axis dispersion. This result is in striking contrast wit ...

2006

Direct photoemission spectroscopy and electronic properties of in situ grown, strained high-T-c and related oxide films

Giorgio Margaritondo, Davor Pavuna, Dusan Vobornik, Dominique Cloëtta, Mike Abrecht

We have optimized laser ablation thin film deposition and transfer procedures within synchrotron vault, specifically to perform angle-integrated and angle-resolved photoemission spectroscopy (ARPES) on high-T-c and related films without cleaving the sample ...

2004

Consistent behaviour of AC susceptibility and transport properties in magnetic superconductor RuSr2GdCu2O8

Davor Pavuna, Ivica Zivkovic, Helmuth Berger

We report on AC susceptibility, resistivity, thermopower and measurements of sintered magnetic superconductor RuSr2GdCu2O8. The anti ferromagnetic phase transition at 133 K is seen clearly in the AC susceptibility as well as in the derivative of resistivit ...

2004

Strain and high temperature superconductivity: Unexpected results from direct electronic structure measurements in thin films

Giorgio Margaritondo, Davor Pavuna, Dominique Cloëtta, Mike Abrecht

Angle-resolved photoemission spectroscopy reveals very surprising strain-induced effects on the electronic band dispersion of epitaxial La2-xSrxCuO4-delta thin films. In strained films we measure a band that crosses the Fermi level (E-F) well before the Br ...

2003

Carrier relaxation time divergence in single and double layer cuprates

Davor Pavuna, Mike Abrecht

We report the transient optical pump-probe reflectivity measurements on single and double layer cuprate single crystals and thin films of ten different stoichiometries. We find that with sufficiently low fluence the relaxation time (tau(R)) of all samples ...

2003

Phase diagram and electronic properties of high-T-c superconducting oxides

Davor Pavuna

We firstly briefly summarize some of the most relevant recent results and open questions across rather complex electronic phase diagram of cuprates. We continue with a discussion of results on thin superconducting oxide films grown by laser ablation. Syste ...

2003

Unexpected electronic properties of strained La1.85Sr0.15CuO4 epitaxial films

Giorgio Margaritondo, Davor Pavuna, Dominique Cloëtta, Mike Abrecht

Surprising results on electronic properties of strained thin La1.85Sr0.15CuO4 epitaxial films are reported. We report on the very first angle resolved photoemission (ARPES) measurements of the dispersion on in-situ grown, in-plane compressed T-phase LSCO f ...

2003

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