72 citations · 341 across the 13 of their papers we have counts for
8 papers · 1 filter
Extreme vortex pinning in the non-centrosymmetric superconductor CePtSi
C. F. Miclea, A. C. Mota, M. Nicklas +5
We report on the vortex dynamics of a single crystal of the non-centrosymmetric heavy-fermion superconductor CePtSi. Decays of the remnant magnetization display a clean logar…
Vortex avalanches in the non-centrosymmetric superconductor Li2Pt3B
C. F. Miclea, A. C. Mota, M. Sigrist +5
We investigated the vortex dynamics in the non-centrosymmetric superconductor Li_2Pt_3B in the temperature range 0.1 K - 2.8 K. Two different logarithmic creep regimes in the decay…
Pronounced enhancement of the lower critical field and critical current deep in the superconducting state of PrOsSb
T. Cichorek, A. C. Mota, F. Steglich +3
We have observed an unexpected enhancement of the lower critical field and the critical current deep in the superconducting state below K ($T…
Strong vortex pinning in the low-temperature superconducting phase of (U_1-xTh_x)Be_13
Ana Celia Mota, Elisabeth Dumont, James L. Smith
We have found a sharp transition at T_c2=350 mK in the vortex creep rate of a single crystal of (U_1-xTh_x)Be_13 with T_c=523 mK (x=0.0275). For T<<T_c2, no creep of vortices is ob…
Transition into a low temperature superconducting phase of unconventional pinning in Sr_2RuO_4
A. C. Mota, E. Dumont, A. Amann +1
We have found a sharp transition in the vortex creep rates at a temperature T^\ast=0.05 T_c in a single crystal of Sr_2RuO_4 (T_{c}=1.03 K) by means of magnetic relaxation measurem…
Unconventional strong pinning in the low temperature phase of U_.9725Th_.0275Be_13
Elisabeth Dumont, Ana Celia Mota, James L. Smith
We investigated low field vortex dynamics in a single crystal of U_.9725Th_.0275Be_13. We found a sharp transition in the vortex creep rate at the lower transition temperature T_c2…
Low field vortex dynamics over seven time decades in a Bi_2Sr_2CaCu_2O_{8+δ} single crystal for temperatures 13 K < T < 83 K
M. Nideroest, A. Suter, P. Visani +2
Using a custom made dc-SQUID magnetometer, we have measured the time relaxation of the remanent magnetization M_rem of a Bi_2Sr_2CaCu_2O_{8+δ} single crystal from the fully critica…
Lower critical field H_c1 and barriers for vortex entry in Bi_2Sr_2CaCu_2O_{8+delta} crystals
M. Nideroest, R. Frassanito, M. Saalfrank +5
The penetration field H_p of Bi_2Sr_2CaCu_2O_{8+delta} crystals is determined from magnetization curves for different field sweep rates dH/dt and temperatures. The obtained results…