Peter Krüger

Adsorbate-Covered (001) Surfaces of Cubic SiC (2009)

Xiangyang Peng, Jürgen Wieferink, Peter Krüger, Johannes Pollmann, G. Münster, D. Wolf, ...

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The trapped two-dimensional Bose gas: from Bose-Einstein condensation to Berezinskii-Kosterlitz-Thouless physics (2008)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Rath, Steffen Patrick, Dalibard, Jean

We analyze the results of a recent experiment with bosonic rubidium atoms harmonically confined in a quasi-two-dimensional geometry. In this experiment a well defined critical point was identified,...

The trapped two-dimensional Bose gas: from Bose-Einstein condensation to Berezinskii-Kosterlitz-Thouless physics (2008)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Rath, Steffen Patrick, Dalibard, Jean

We analyze the results of a recent experiment with bosonic rubidium atoms harmonically confined in a quasi-two-dimensional geometry. In this experiment a well defined critical point was identified,...

The trapped two-dimensional Bose gas: from Bose-Einstein condensation to Berezinskii-Kosterlitz-Thouless physics (2008)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Rath, Steffen Patrick, Dalibard, Jean

We analyze the results of a recent experiment with bosonic rubidium atoms harmonically confined in a quasi-two-dimensional geometry. In this experiment a well defined critical point was identified,...

The trapped two-dimensional Bose gas: from Bose-Einstein condensation to Berezinskii-Kosterlitz-Thouless physics (2008)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Rath, Steffen Patrick, Dalibard, Jean

We analyze the results of a recent experiment with bosonic rubidium atoms harmonically confined in a quasi-two-dimensional geometry. In this experiment a well defined critical point was identified,...

The trapped two-dimensional Bose gas: from Bose-Einstein condensation to Berezinskii-Kosterlitz-Thouless physics (2007)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Rath, Steffen Patrick, Dalibard, Jean

We analyze the results of a recent experiment with bosonic rubidium atoms harmonically confined in a quasi-two-dimensional geometry. In this experiment a well defined critical point was identified,...

The trapped two-dimensional Bose gas: from Bose-Einstein condensation to Berezinskii-Kosterlitz-Thouless physics (2007)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Rath, Steffen Patrick, Dalibard, Jean

We analyze the results of a recent experiment with bosonic rubidium atoms harmonically confined in a quasi-two-dimensional geometry. In this experiment a well defined critical point was identified,...

Critical Point of an Interacting Two-Dimensional Atomic Bose Gas (2007)

Krüger, Peter, Hadzibabic, Zoran, Dalibard, Jean

We have measured the critical atom number in a harmonically trapped two-dimensional (2D) Bose gas of rubidium atoms at different temperatures. We found this number to be about five times higher than...

Critical Point of an Interacting Two-Dimensional Atomic Bose Gas (2007)

Krüger, Peter, Hadzibabic, Zoran, Dalibard, Jean

We have measured the critical atom number in an array of harmonically trapped two-dimensional (2D) Bose gases of rubidium atoms at different temperatures. We found this number to be about five times...

Critical Point of an Interacting Two-Dimensional Atomic Bose Gas (2007)

Krüger, Peter, Hadzibabic, Zoran, Dalibard, Jean

We have measured the critical atom number in an array of harmonically trapped two-dimensional (2D) Bose gases of rubidium atoms at different temperatures. We found this number to be about five times...

Critical Point of an Interacting Two-Dimensional Atomic Bose Gas (2007)

Krüger, Peter, Hadzibabic, Zoran, Dalibard, Jean

We have measured the critical atom number in an array of harmonically trapped two-dimensional (2D) Bose gases of rubidium atoms at different temperatures. We found this number to be about five times...

The atomic Bose gas in Flatland (2006)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Battelier, Baptiste, Dalibard, Jean

We describe a recent experiment performed with rubidium atoms ($^{87}$Rb), aiming at studying the coherence properties of a two-dimensional gas of bosonic particles at low temperature. We have...

The atomic Bose gas in Flatland (2006)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Battelier, Baptiste, Dalibard, Jean

We describe a recent experiment performed with rubidium atoms ($^{87}$Rb), aiming at studying the coherence properties of a two-dimensional gas of bosonic particles at low temperature. We have...

The atomic Bose gas in Flatland (2006)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Battelier, Baptiste, Dalibard, Jean B.

We describe a recent experiment performed with rubidium atoms ($^{87}$Rb), aiming at studying the coherence properties of a two-dimensional gas of bosonic particles at low temperature. We have...

Berezinskii-Kosterlitz-Thouless Crossover in a Trapped Atomic Gas (2006)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Battelier, Baptiste, Dalibard, Jean B.

Any state of matter is classified according to its order, and the kind of order a physical system can posses is profoundly affected by its dimensionality. Conventional long-range order, like in a...

Berezinskii-Kosterlitz-Thouless Crossover in a Trapped Atomic Gas (2006)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Battelier, Baptiste, Dalibard, Jean

Any state of matter is classified according to its order, and the kind of order a physical system can posses is profoundly affected by its dimensionality. Conventional long-range order, like in a...

Berezinskii-Kosterlitz-Thouless Crossover in a Trapped Atomic Gas (2006)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Battelier, Baptiste, Dalibard, Jean

Any state of matter is classified according to its order, and the kind of order a physical system can posses is profoundly affected by its dimensionality. Conventional long-range order, like in a...

The atomic Bose gas in Flatland (2006)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Battelier, Baptiste, Dalibard, Jean

We describe a recent experiment performed with rubidium atoms ($^{87}$Rb), aiming at studying the coherence properties of a two-dimensional gas of bosonic particles at low temperature. We have...

Berezinskii-Kosterlitz-Thouless Crossover in a Trapped Atomic Gas (2006)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Battelier, Baptiste, Dalibard, Jean

Any state of matter is classified according to its order, and the kind of order a physical system can posses is profoundly affected by its dimensionality. Conventional long-range order, like in a...

The atomic Bose gas in Flatland (2006)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Battelier, Baptiste, Dalibard, Jean

We describe a recent experiment performed with rubidium atoms ($^{87}$Rb), aiming at studying the coherence properties of a two-dimensional gas of bosonic particles at low temperature. We have...

Berezinskii-Kosterlitz-Thouless Crossover in a Trapped Atomic Gas (2006)

Hadzibabic, Zoran, Krüger, Peter, Cheneau, Marc, Battelier, Baptiste, Dalibard, Jean

Any state of matter is classified according to its order, and the kind of order a physical system can posses is profoundly affected by its dimensionality. Conventional long-range order, like in a...

Coherent matter waves near surfaces (2004)

Krüger, Peter

Neutral atoms can be trapped and manipulated on microscopic scales near surfaces of atom chips. The work covered by this thesis includes the development and test of microscopic atom optical tools. An...

X-ray absorption spectra at the Ca-L$_{2,3}$-edge calculated within multi-channel multiple scattering theory (2004)

Krüger, Peter, Natoli, Calogero R.

We report a new theoretical method for X-ray absorption spectroscopy (XAS) in condensed matter which is based on the multi-channel multiple scattering theory of Natoli et al. and the eigen-channel...

Coherent matter waves near surfaces (2004)

Krüger, Peter

Neutral atoms can be trapped and manipulated on microscopic scales near surfaces of atom chips. The work covered by this thesis includes the development and test of microscopic atom optical tools. An...

Protein simulations: The absorption spectrum of barnase point mutants (2004)

Somers, Ken R.F., Krüger, Peter, Bucikiewicz, Sylwia, De Maeyer, Marc, Engelborghs, Yves, Ceulemans, Arnout

The near-UV absorption spectra of barnase double-point mutants are calculated using a combination of molecular dynamics and ab initio techniques. The atoms of the fluorescent probes are placed in a...

Simulation of the activation of {alpha}-chymotrypsin: Analysis of the pathway and role of the propeptide (2004)

Mátrai, Janka, Verheyden, Gert, Krüger, Peter, Engelborghs, Yves

&agr;-Chymotrypsin undergoes a reversible conformational change from an inactive chymotrypsinogen-like structure at high pH to an active conformation at neutral pH. In order to gain insight into this...

Extending the capabilities of targeted molecular dynamics: Simulation of a large conformational transition in plasminogen activator inhibitor 1 (2001)

Krüger, Peter, Verheyden, Stefan, Declerck, Paul J., Engelborghs, Yves

Plasminogen activator inhibitor type 1 (PAI-1) is an inhibitor of plasminogen activators such as tissue-type plasminogen activator or urokinase-type plasminogen activator. For this molecule,...

Atom Chips (1999)

Folman, Ron, Krüger, Peter, Cassettari, Donatella, Hessmo, Björn, Maier, Thomas, Schmiedmayer, Jörg

Atoms can be trapped and guided using nano-fabricated wires on surfaces, achieving the scales required by quantum information proposals. These Atom Chips form the basis for robust and widespread...

MD Simulation of Protein-Ligand Interaction: Formation and Dissociation of an Insulin-Phenol Complex

Swegat, Wolfgang, Schlitter, Jürgen, Krüger, Peter, Wollmer, Axel

Complexes of proteins with small ligands are of utmost importance in biochemistry, and therefore equilibria, formation, and decay have been investigated extensively by means of biochemical and...

Deacylated Pulmonary Surfactant Protein SP-C Transforms From α-Helical to Amyloid Fibril Structure via a pH-Dependent Mechanism: An Infrared Structural Investigation

Dluhy, Richard A., Shanmukh, Saratchandra, Leapard, J. Brian, Krüger, Peter, Baatz, John E.

Bovine pulmonary surfactant protein C (SP-C) is a hydrophobic, α-helical membrane-associated lipoprotein in which cysteines C4 and C5 are acylated with palmitoyl chains. Recently, it has been found...

MD Simulation of Protein-Ligand Interaction: Formation and Dissociation of an Insulin-Phenol Complex

Swegat, Wolfgang, Schlitter, Jürgen, Krüger, Peter, Wollmer, Axel

Complexes of proteins with small ligands are of utmost importance in biochemistry, and therefore equilibria, formation, and decay have been investigated extensively by means of biochemical and...

Deacylated Pulmonary Surfactant Protein SP-C Transforms From α-Helical to Amyloid Fibril Structure via a pH-Dependent Mechanism: An Infrared Structural Investigation

Dluhy, Richard A., Shanmukh, Saratchandra, Leapard, J. Brian, Krüger, Peter, Baatz, John E.

Bovine pulmonary surfactant protein C (SP-C) is a hydrophobic, α-helical membrane-associated lipoprotein in which cysteines C4 and C5 are acylated with palmitoyl chains. Recently, it has been found...

Protein simulations: The absorption spectrum of barnase point mutants

Somers, Ken R.F., Krüger, Peter, Bucikiewicz, Sylwia, De Maeyer, Marc, Engelborghs, Yves, Ceulemans, Arnout

The near-UV absorption spectra of barnase double-point mutants are calculated using a combination of molecular dynamics and ab initio techniques. The atoms of the fluorescent probes are placed in a...

Simulation of the activation of α-chymotrypsin: Analysis of the pathway and role of the propeptide

Mátrai, Janka, Verheyden, Gert, Krüger, Peter, Engelborghs, Yves

α-Chymotrypsin undergoes a reversible conformational change from an inactive chymotrypsinogen-like structure at high pH to an active conformation at neutral pH. In order to gain insight into this...

Extending the capabilities of targeted molecular dynamics: Simulation of a large conformational transition in plasminogen activator inhibitor 1

Krüger, Peter, Verheyden, Stefan, Declerck, Paul J., Engelborghs, Yves

Plasminogen activator inhibitor type 1 (PAI-1) is an inhibitor of plasminogen activators such as tissue-type plasminogen activator or urokinase-type plasminogen activator. For this molecule,...