Spin-zero anomaly in the magnetic quantum oscillations of a two-dimensional metal (2008)
Wosnitza, J., Gvozdikov, V. M., Hagel, J., Ignatchik, O., Bergk, B., Meeson, P. J., ...
Fermi surface of the half Heusler compounds Ce§1§-§xLa§xBiPt. (2006)
Bianchi, A.D., Wosnitza, J., Kozlova, N., Eckert, D., Schultz, L., Opahle, I., ...
DPG Spring Meeting of the Divison Condensed Matter, 21st General Conf.of the Condensed Matter Division of the European Physical Society, Dresden, March 26-31, 2006
Magnetic-field induced band-structure change in CeBiPt (2005)
Kozlova, N., Hagel, J., Doerr, M., Wosnitza, J., Eckert, D., ...
We report on a field-induced change of the electronic band structure of CeBiPt as evidenced by electrical-transport measurements in pulsed magnetic fields. Above ~25 T, the charge-carrier...
Magnetic-field-induced band-structure change in CeBiPt. (2005)
Kozlova, N., Hagel, J., Doerr, M., Wosnitza, J., Eckert, D., Müller, K.H., ...
Physical Review Letters, 95(2005) S.086403/1-4
Spin-zero anomaly in the magnetic quantum oscillations of a two-dimensional metal (2004)
Wosnitza, J., Gvozdikov, V. M., Hagel, J., Meeson, P. J., Schlueter, J. A., Winter, R. W., ...
We report on an anomalous behavior of the spin-splitting zeros in the de Haas-van Alphen (dHvA) signal of a quasi-two-dimensional organic superconductor. The zeros as well as the angular dependence...
Maniv, T., Zhuravlev, V., Wosnitza, J., Hagel, J.
The remarkable phenomenon of weak magnetization hysteresis loops, observed recently deep in the vortex-liquid state of a nearly two-dimensional (2D) superconductor at low temperatures, is shown to...
Fermi-surface reconstruction close to a pressure-induced metal-insulator transition (2004)
Wosnitza,J., Hagel,J., Stockert,O., Pfleiderer,C., Schlueter,J. A., Mohtasham,J., ...
Fermi-surface reconstruction close to a pressure-induced metal-insulator transition (2004)
Wosnitza, J., Hagel, J., Stockert, O., Pfleiderer, C., Schlueter, J. A., Mohtasham, J., ...
Coherent vs incoherent interlayer transport in layered metals (2002)
Wosnitza, J., Hagel, J., Qualls, J. S., Brooks, J. S., Balthes, E., Schweitzer, D., ...
The magnetic-field, temperature, and angular dependence of the interlayer magnetoresistance of two different quasi-two-dimensional (2D) organic superconductors is reported. For...
Temperature-dependent Fermi surface in CeBiPt (2002)
Goll, G., Hagel, J., Von Löhneysen, H. V., Pietrus, T., Wanka, S., Wosnitza, J., ...
Shubnikov-de Haas (SdH) and Hall-effect measurements of CeBiPt and LaBiPt reveal the presence of very small Fermi surfaces with hole-like charge carriers for both semimetals. Reasonable agreement...
Multigap-Supraleitung in MgB§2. (2002)
Laube, F., Goll, G., Hagel, J., Löhneysen, H.von, Ernst, D., Wolf, T.
Frühjahrstagung des Arbeitskreises Festkörperphysik (AKF) der DPG, Regensburg, 11.-15.März 2002
Temperature-dependent Fermi surface in CeBiPt. (2002)
Goll, G., Hagel, J., Löhneysen, H.von, Pietrus, T., Wanka, S., Wosnitza, J., ...
Europhysics Letters, 57(2002) S.233-39
Superconductivity of a crystalline Ga§8§4-cluster compound. (2002)
Hagel, J., Kelemen, M.T., Fischer, G., Pilawa, B., Wosnitza, J., Dormann, E., ...
Journal of Low Temperature Physics, 129(2002) S.133-42
Superconducting energy gap distribution of MgB$_2$ investigated by point-contact spectroscopy (2001)
Laube, F., Goll, G., Hagel, J., Löhneysen, H. V., Ernst, D., Wolf, T.
We performed point-contact spectroscopy on the binary superconductor MgB$_2$. The differential conductance shows gap-related structures which vary in width and position from contact to contact. The...
Two-dimensional magnetic quantum oscillations observed in an organic metal (2001)
Hagel, J., Wanka, S., Wosnitza, J., Balthes, E., Schlueter, J. A., Kini, A. M., ...
Field-induced metal-insulator transition in a two-dimensional organic superconductor (2001)
Wosnitza, J., Wanka, S., Hagel, J., Von Löhneysen, H., Qualls, J. S., Brooks, J. S., ...
Field-Induced Metal-Insulator Transition in a Two-Dimensional Organic Superconductor (2001)
Balthes, E., Brooks, J. S., Gard, G. L., Geiser, U., Hagel, J., Löhneysen, H. V., ...
Tc-Änderungen von RuSr§2GdCu§2O§8 unter hohem Druck. (2001)
Weiss, K.P., Schlachter, S.I., Tutsch, U., Hagel, J., Leibrock, H., Fietz, W.H., ...
65.Physikertagung gemeinsam mit der Frühjahrstagung des Arbeitskreises Festkörperphysik der DPG, Hamburg, 26.-30. März 2001
Superconducting energy gap distribution of MgB§2 investigated by point-contact spectroscopy. (2001)
Laube, F., Goll, G., Hagel, J., Löhneysen, H.von, Ernst, D., Wolf, T.
Europhysics Letters, 56(2001) S.296-301
Field-induced metal-insulator transition in a two-dimensional organic superconductor (2000)
Wosnitza, J., Wanka, S., Hagel, J., Loehneysen, H. V., Qualls, J. S., Brooks, J. S., ...
The quasi-two-dimensional organic superconductor beta-(BEDT-TTF)_2SF_5CH_2CF_2SO_3 (T_c approx 4.4 K)shows very strong Shubnikov-de Haas (SdH) oscillations which are superimposed on a highly...
Measurements Of Single Bunch Stability In LEP (2000)
Brandt, D, Cornelis, Karel, Funakoshi, Y, Hagel, J, Jowett, John M, Peschardt, E, ...
LEP Impedances: Summary Of Recent Measurements (2000)
Brandt, D, Cornelis, Karel, Hagel, J, Pitthan, R, Rivkin, L, Rossa, E, ...
Anomalous temperature dependence of magnetic quantum oscillations in CeBiPt (2000)
Goll, G., Hagel, J., Loehneysen, H. V., Pietrus, T., Wanka, S., Wosnitza, J., ...
Shubnikov--de Haas (SdH) and Hall-effect measurements of CeBiPt and LaBiPt reveal the presence of simple and very small Fermi surfaces with hole-like charge carriers for both semimetals. In the...
Two-dimensional Fermi liquid with fixed chemical potential (2000)
Wosnitza, J., Wanka, S., Hagel, J., Balthes, E., Harrison, N., Schlueter, J. A., ...
Interlayer dissipation in magnetic fields for H parallel to J in κ-(ET)2I3 (2000)
Zuo, F., Hagel, J., Wanka, S., Wosnitza, J., Balthes, E., Schweitzer, D., ...
kappa-(BEDT-TTF)_2Cu[N(CN)_2]Br: a Fully Gapped Strong-Coupling Superconductor (1999)
Elsinger, H., Wosnitza, J., Wanka, S., Hagel, J., Schweitzer, D., Strunz, W.
High-resolution specific-heat measurements of the organic superconductor kappa-(BEDT-TTF)_2Cu[N(CN)_2]Br in the superconducting (B = 0) and normal (B = 14 T) state show a clearly resolvable anomaly...
The design of a detuned and damped accelerating structure implies variations in the geometry which induce in turn a variation of the group velocity v^g and of the impedance per unit length R',...
New theory of single bunch stability in a linac with quadrupole displacements (1999)
The analytical treatment previously described by Guingard and Hagel (1998) has been extended to include the important effect of magnetic quadrupole transverse displacements, the chromatic variation...
The CLIC Study of a Multi-TeV $e^\pm$ Linear Collider (1999)
Bossart, Rudolf, Braun, Hans Heinrich, Carron, G, Coosemans, Williame, Corsini, R, D'Amico, T E, ...
The progress of the Compact LInear Collider (CLIC) study of a multi-TeV (0.5 - 5 TeV) high-luminosity (5'1033 to 1.5'1035 cm-2 sec-1) e± linear collider based on Two-Beam Acceleration (TBA) is...
The basic method we propose in order to solve analytically the equation of motion of a relativistic single-bunch travelling in a linac, in the presence of wakefields, has been summarised in a...
Analytical treatment of single bunch stability in a linac (1998)
Single bunch stability is analysed by solving the equation of motion of the particles travelling in a linac, for a Gaussian distribution of charge, a linear variation of the transverse wakefield...
MUSTAFA: a tool for numerical simulations of the beam behavior in a linac (1998)
MUSTAFA stands for MUltibunch Simulation and Tracking Algorithm for Future linear Accelerators and provides an environment for tracking a multibunch beam accelerated in the linac of a collider. It is...
CLIC, a 0.5 to 5 TeV e$^{\pm}$ Compact Linear Collider (1998)
Delahaye, J P, Bossart, Rudolf, Braun, Hans Heinrich, Carron, G, Chautard, F, Coosemans, Williame, ...
The CLIC study of a high energy (0.5 - 5 TeV), high luminosity (10^34 - 10^35 cm^-2 sec^-1) e± linear collider is presented. Beam acceleration using high frequency (30 GHz) normal-conducting...
Analytical Treatment of Single Bunch Transverse Dynamics in Linacs with Wakefields (1998)
In this paper we present an analytical treatment of the equation of motion of single bunch particles traveling in the linac of a linear collider, in the presence of wakefields. Using a somewhat...
Mustafa environment description and users' guide with applications to CLIC (1998)
In the main linacs of future linear colliders, the control of the emittances and the stability of a train of bunches are critical. It was therefore important for the Compact Linear Collider study...
MBTR Simulations for Different Multibunch Structure Models (1997)
This paper reports on simulations undertaken with the code MBTR to explore the emittance growth for various multibunch CLIC structures. Two simplified models of long-range dipole fields are...
Beam Characteristics Versus Cavity Models in CLIC (1997)
The luminosity requested for linear colliders with center-of-mass energies exceeding 500 GeV, implies a multibunch operation be considered in order to limit the RF power consumption. In the Compact...
Analytical study of the conjecture rule for the combination of multipole effects in LHC (1997)
This paper summarizes the analytical investigation done on the conjecture law found by tracking for the effect on the dynamic aperture of the combination of two multipoles of various order. A...
Multibunch BNS Damping and Wakefield Attenuation in High Frequency Linacs (1996)
In high frequency linacs, where the wakefields are strong, the stability of a train of bunches is critical. It was therefore important for the Compact Linear Collider study (CLIC) to investigate...
Multibunch Emittance Preservation in CLIC (1996)
In high-frequency linacs, where the wakefields are strong, the stability of a train of bunches is critical. The beam break-up due to long range wakefields induces a decoherence of the bunch...
Acupuncture inhibits vagal gastric acid secretion stimulated by sham feeding in healthy subjects.
Lux, G, Hagel, J, Bäcker, P, Bäcker, G, Vogl, R, Ruppin, H, ...
In a prospective randomised study, the effect of acupuncture on sham feeding stimulated gastric acid secretion was investigated. In eight healthy volunteers (five men, three women, mean (SEM) age...
Lux, G, Hagel, J, Baecker, P, Baecker, B, Vogl, R, Ruppin, H, ...
Domschke, W, Domschke, S, Hagel, J, Demling, L, Croft, D N
Nineteen healthy subjects were studied and 17 patients with gastric ulcer before and after ulcer healing with carbenoxolone. Gastric deoxytibonucleic acid (DNA) loss was measured as an index of...