Transport anomalies across the quantum limit in semimetallic Bi$_{0.96}$Sb$_{0.04}$ (2008)
Banerjee, A., Fauque, B., Izawa, K., Miyake, A., Sheikin, I., Flouquet, J., ...
We report on a study of electronic transport in semi-metallic Bi$_{0.96}$Sb$_{0.04}$. At zero field, the system is a very dilute Fermi liquid displaying a T$^{2}$ resistivity with an enhanced...
Levy, F., Sheikin, I., Berthier, C., Horvatic, M., Takigawa, M., Kageyama, H., ...
We present magnetic torque measurements on the Shastry-Sutherland quantum spin system SrCu$_2$(BO$_3$)$_2$ in fields up to 31~T and temperatures down to 50~mK. A new quantum phase is observed in a...
Levy, F., Sheikin, I., Berthier, C., Horvatic, M., Takigawa, M., Kageyama, H., ...
We present magnetic torque measurements on the Shastry-Sutherland quantum spin system SrCu$_2$(BO$_3$)$_2$ in fields up to 31~T and temperatures down to 50~mK. A new quantum phase is observed in a...
Andres, D., Kartsovnik, M. V., Biberacher, W., Neumaier, K., Sheikin, I., Mueller, H.
Successive magnetic-field-induced charge-density-wave transitions in the molecular conductor $\alpha$-(BEDT-TTF)$_2$KHg(SCN)$_4$ are studied in the hydrostatic pressure regime, in which the zero...
Levy, F., Sheikin, I., Berthier, C., Horvatic, M., Takigawa, M., Kageyama, H., ...
We present magnetic torque measurements on the Shastry-Sutherland quantum spin system SrCu$_2$(BO$_3$)$_2$ in fields up to 31 T and temperatures down to 50 mK. A new quantum phase is observed in a 1...
The de Haas - van Alphen Effect Study of the Fermi Surface of ZrB12 (2007)
Gasparov, V. A., Sheikin, I., Levy, F., Teyssier, J., Santi, G.
The de Haas - van Alphen (dHvA) effect in the cluster superconductor ZrB12 was studied by magnetic torque measurements in magnetic fields up to 28 T at temperatures down to 0.35 K. The dHvA...
Monni, M., Pallecchi, I., Ferdeghini, C., Ferrando, V., Floris, A., D'Agliano, E. Galleani, ...
We report magnetoresistance (MR) measurements on MgB2 and the corresponding full account from ab-initio calculations; we suggest that this combination can be a useful tool to probe electron- phonon...
Miyahara, S., Manmana, S. R., Noack, R. M., Mayaffre, H., Sheikin, I., ...
We investigate the interplay of Dzyaloshinskii-Moriya interactions and an external field in spin 1/2 dimers. For isolated dimers and at low field, we derive simple expressions for the staggered and...
Systematic study of disorder induced by neutron irradiation in MgB2 thin films (2006)
Ferrando, V., Pallecchi, I., Tarantini, C., Marre, D., Putti, M., Gatti, F., ...
The effects of neutron irradiation on normal state and superconducting properties of epitaxial magnesium diboride thin films are studied up to fluences of 1020 cm-2. All the properties of the films...
Field-induced magnetoelastic instabilities in antiferromagnetic molecular wheels (2006)
Waldmann, O., Dobe, C., Ochsenbein, S. T., Güdel, H. U., Sheikin, I.
The magnetic torque of the antiferromagnetic molecular wheel CsFe8 was studied down to 50 mK and up to 28 T. Below about 0.5 K phase transitions were observed at the field-induced level crossings...
Evidence for a new magnetic field scale in CeCoIn5 (2006)
Sheikin, I., Jin, H., Bel, R., Behnia, K., Proust, C., Flouquet, J., ...
The Nernst coefficient of CeCoIn5 displays two distinct anomalies in magnetic field. The feature detected at H-K similar to 23 T is similar to what is observed in CeRu2Si2 at H-m=7.8 T where a...
Magnetism and superconductivity of heavy fermion matter (2006)
Flouquet, J., Knebel, G., Braithwaite, D., Aoki, D., Brison, J. P., Hardy, F., ...
The interplay of magnetism and unconventional superconductivity (d singlet wave or p triplet wave) in a strongly correlated electronic system (SCES) is discussed with recent examples found in heavy...
Kartsovnik, M. V., Andres, D., Simonov, S. V., Biberacher, W., Sheikin, I., Kushch, N. D., ...
We present comparative studies of the orientation effect of a strong magnetic field on the interlayer resistance of alpha-(BEDT-TTF)(2)KHg(SCN)(4) samples characterized by different crystal quality....
Knebel, G., Boursier, R., Hassinger, E., Lapertot, G., Niklowitz, P. G., Pourret, A., ...
We present detailed measurements of the electrical resistivity and microcalorimetry under magnetic field and high pressure which confirm the proximity of YbRh2Si2 to a quantum critical point at...
Nothardt, A., Balthes, E., Salameh, B., Schweitzer, D., Sheikin, I.
SdH - measurements were performed on the organic metal (TMTSF)(2)ReO4 under a pressure of 8.5 kbar. Fast oscillations (170) with a frequency of 330T could be reproduced already above 4.5T for...
NQR studies of CePd2In under hydrostatic pressure (2006)
Weller, M., Hinderer, J., Gavilano, J. L., Pedrini, B., Rau, D., Sheikin, I., ...
We present the results of In-115-NQR measurements of CePd2In under hydrostatic pressure up to 14.6 kbar. At zero external pressure this compound exhibits anti ferromagnetic order below T-N = 1.2 K....
Angle-dependent magnetoresistance in the weakly incoherent interlayer transport regime (2005)
Kartsovnik, M. V., Andres, D., Simonov, S. V., Biberacher, W., Sheikin, I., Kushch, N. D., ...
We present comparative studies of the orientation effect of a strong magnetic field on the interlayer resistance of $\alpha$-(BEDT-TTF)$_2$KHg(SCN)$_4$ samples characterized by different crystal...
Effects of neutron irradiation on polycrystalline Mg11B2 (2005)
Tarantini, C., Aebersold, H. U., Braccini, V., Celentano, G., Ferdeghini, C., Ferrando, V., ...
We studied the influence of the disorder introduced in polycrystalline MgB2 samples by neutron irradiation. To circumvent self shielding effects due to the strong interaction between thermal neutrons...
Field-induced magnetoelastic instabilities in antiferromagnetic molecular wheels (2005)
Waldmann, O., Dobe, C., Ochsenbein, S. T., Güdel, H. U., Sheikin, I.
The magnetic torque of the antiferromagnetic molecular wheel CsFe8 was studied down to 50 mK and in fields up to 28 T. Below ca. 0.5 K phase transitions were observed at the field-induced...
Evidence for a new magnetic field scale in CeCoIn5 (2005)
Sheikin, I., Jin, H., Bel, R., Behnia, K., Proust, C., Flouquet, J., ...
The Nernst coefficient of CeCoIn5 displays a distinct anomaly at H_K ~ 23 T. This feature is reminiscent of what is observed at 7.8 T in CeRu2Si2, a well-established case of metamagnetic transition....
Magnetism and superconductivity of heavy fermion matter (2005)
Flouquet, J., Knebel, G., Braithwaite, D., Aoki, D., Brison, J. P., Hardy, F., ...
The interplay of magnetism and unconventional superconductivity (d singlet wave or p triplet wave) in strongly correlated electronic system (SCES) is discussed with recent examples found in heavy...
Magnetic oscillations in a two-dimensional network of compensated electron and hole orbits (2005)
Audouard, A., Vignolles, D., Haanappel, E., Sheikin, I., B. Lyubovskii, R., N. Lyubovskaya, R.
Magnetic phase diagram of U(Ru0.98Rh0.02)2Si2 (2005)
Bourdarot, F., Fåk, B., Lapierre, F., Sheikin, I., Lejay, P.
Critical field of magnesium diboride in substituted and irradiated samples (2005)
Tarantini, C., Braccini, V., Ferdeghini, C., Gatti, F., Manfrinetti, P., Marre, D., ...
Topology and spin dynamics in magnetic molecules (2005)
Carretta, S., Santini, P., Amoretti, G., Affronte, M., Ghirri, A., Sheikin, I., ...
Magnetic oscillations in a two-dimensional network of compensated electron and hole orbits (2005)
Audouard, A., Vignolles, D., Haanappel, E., Sheikin, I., Lyubovskii, R. B., Lyubovskaya, R. N.
Topology and spin dynamics in magnetic molecules (2004)
Carretta, S., Santini, P., Amoretti, G., Affronte, M., Ghirri, A., Sheikin, I., ...
We investigate the role of topology and distortions in the quantum dynamics of magnetic molecules, using a cyclic spin system as reference. We consider three variants of antiferromagnetic molecular...
Putti, M., Braccini, V., Ferdeghini, C., Gatti, F., Manfrinetti, P., Marre', D., ...
In this letter we present the effect of neutron irradiation up to fluences of 3.9 1019 n/cm2 on the superconducting properties of MgB2. In order to obtain a disorder structure homogeneously...
SdH experiments on the organic superconductor κ-(BEDT-TTF)2I3 under hydrostatic pressure (2004)
Nothardt, A., Balthes, E., Schmidt, W., Schweitzer, D., Kartsovnik, M. V., Sheikin, I.
Measurements of magneto-tran sport on the organic superconductor kappa-(BEDT-TTF)(2)I-3 in magnetic fields up to 23 T at 0.48 K under hydrostatic pressures LIP to 9 kbar are reported. In this...
Dumas, J., Guyot, H., Balaska, H., Marcus, J., Vignolles, D., Sheikin, I., ...
Magnetic torque and magnetoresistance measurements have been performed in high magnetic field on the quasi-two-dimensional charge density wave (CDW) oxide bronze KMO6O17. Several anomalies have been...
Critical fluctuations in the carbon-doped magnesium diboride (2004)
Hol'anova, Z., Kačmarčik, J., Szabó, P., Samuely, P., Sheikin, I., Ribeiro, R. A., ...
Carbon doping of magnesium diboride resulting in the Mg(B0.9C0.1)(2) stoichiometry leads to the superconducting transition temperature T-c = 22 K which is about 17 K less than in the pure MgB2. We...
Level crossing in a molecular Cr8 ring (2004)
Affronte, M., Guidi, T., Caciuffo, R., Carretta, S., Amoretti, G., Hinderer, J., ...
The heat capacity of a molecular Cr-8 ring was measured as a function of temperature and magnetic field in order to follow the evolution of the Schottky anomaly through the first (S = 0 to \1, - I >)...
Structural and magnetic properties of methylated CuHpCl (2004)
Clémancey, M., Mayaffre, H., Berthier, C., Ségransan, P., Hassan, A., ...
Selected proton sites were substituted by methyl groups in the quantum spin system CuHpCl, in order to elucidate the magnetic structure of this material, previously considered as a prototypal spin...
De Haas-van Alphen effect study of CePd2Si2 (2004)
Sheikin, I., Gröger, A., Raymond, S., Jaccard, D., Aoki, D., Harima, H., ...
Pressure-induced magnetic phase transition in gold-phase SmS (2004)
Haga, Y., Derr, J., Barla, A., Salce, B., Lapertot, G., Sheikin, I., ...
High magnetic field study of CePd2Si2 (2004)
Sheikin, I., Gröger, A., Raymond, S., Jaccard, D., Aoki, D., Harima, H., ...
Effect of two bands on critical fields in MgB2 thin films with various resistivity values (2003)
Ferrando, V., Manfrinetti, P., Marre', D., Putti, M., Sheikin, I., Tarantini, C., ...
Upper critical fields of four MgB2 thin films were measured up to 28 Tesla at Grenoble High Magnetic Field Laboratory. The films were grown by Pulsed Laser Deposition and showed critical temperatures...
Specific heat of MgB2 after irradiation (2003)
Wang, Y. X., Bouquet, F., Sheikin, I., Toulemonde, P., Revaz, B., Eisterer, M., ...
High magnetic field study of CePd2Si2 (2003)
Sheikin, I., Gröger, A., Raymond, S., Jaccard, D., Aoki, D., Harima, H., ...
Effect of two bands on critical fields in MgB2 thin films with various resistivity values (2003)
Ferrando, V., Manfrinetti, P., Marré, D., Putti, M., Sheikin, I., Tarantini, C., ...
Mixing of magnetic states in a Cr8 molecular ring (2003)
Affronte, M., Guidi, T., Caciuffo, R., Carretta, S., Amoretti, G., Hinderer, J., ...
Unusual effects of anisotropy on the specific heat of ceramic and single crystal MgB2 (2003)
Bouquet, F., Wang, Y., Sheikin, I., Toulemonde, P., Eisterer, M., Weber, H. W., ...
Specific heat of ceramic and single crystal MgB2 (2003)
Junod, A., Wang, Y., Bouquet, F., Sheikin, I., Toulomonde, P., Eskildsen, M. R., ...
Specific heat and isothermal magnetocaloric effect for single-crystal UAs (2003)
Plackowski, T., Junod, A., Bouquet, F., Sheikin, I., Wang, Y., Jeowski, A., ...
Unusual effects of anisotropy on the specific heat of ceramic and single crystal MgB2 (2002)
Bouquet, F., Wang, Y., Sheikin, I., Toulemonde, P., Eisterer, M., Weber, H. W., ...
The two-gap structure in the superconducting state of MgB_2 gives rise to unusual thermodynamic properties which depart markedly from the isotropic single-band BCS model, both in their temperature-...
Bouquet, F., Wang, Y., Sheikin, I., Plackowski, T., Junod, A., Lee, S., ...
Heat-capacity measurements of a 39 microgramm MgB_2 single crystal in fields up to 14 T and below 3 K allow the determination of the low-temperature linear term of the specific heat, its field...
Specific heat of heavy fermion CePd2Si2 in high magnetic fields (2002)
Sheikin, I., Wang, Y., Bouquet, F., Lejay, P., Junod, A.
We report specific heat measurements on the heavy fermion compound CePd2Si2 in magnetic fields up to 16 T and in the temperature range 1.4-16 K. A sharp peak in the specific heat signals the...