Irreversibility line in superconductingHgBa2CuO4+δsingle crystals

Magnetic relaxation measurements in the region of the second magnetization peak in aHgBa2CuO4+δPissas1, Σταμόπουλος2, Moraitakis3 et al. 1999Phys. Rev. BSelf Cite274182View full textAdd to dashboardCite

“…25,26,16 The transition temperature was estimated to be T c ϭ95 K (⌬T c ϭ2 K͒. Figure 1͑a͒ shows magnetic hysteresis loops at Tϭ5, 10, 20, and 30 K. At all these temperatures the shape of m(H) is practically the same.…”

“…1-7 ͒, Bi 2 Sr 2 CaCu 2 O 8ϩ␦ ͑Refs. 8-14͒, Tl-based compounds, 15 HgBa 2 CuO 4ϩ␦ , 16 Nd 1.85 Ce 0.15 CuO 4Ϫ␦ , ͑Ref. 17͒, and in La 2Ϫx Sr x CuO 4 , ͑Ref.…”

Peak effects and the solid vortex phase of aT*-phaseSmLa0.8Sutjahja1, Nugroho2, Tjia3 et al. 2001Phys. Rev. B6030View full textAdd to dashboardCite

“…7 show a general trend of increasing H p with decreasing temperature. It is well known that this general temperature dependent behavior of H p has been theoretically predicted by the surface barrier model 41 as well as the geometrical barrier model 42 and experimentally verified in several systems 10,11,15,29,43 and different temperature ranges. 8,20,21,44 The surface barrier model predicts for a strongly layered system a functional relation of the form H p (T)ӍH c exp(ϪT/T 0 ) where T 0 is a constant.…”

“…This phenomenon has been observed in a relatively clean and high quality single crystals of YBa 2 Cu 3 O 7Ϫ␦ ͑YBCO͒, 2-7 Nd 1.85 Ce 0.15 CuO 4Ϫ␦ ͑NCCO͒, [8][9][10][11] (La 1Ϫx Sr x ) 2 CuO 4Ϫ␦ ͑LSCO͒, 12-14 Bi 2 Sr 2 CaCu 2 O 8 ͑BSCCO͒, [15][16][17][18][19][20][21] (Bi,Pb) 2 Sr 2 CaCu 2 O 8 ͑BPSCCO͒, [22][23][24] Tl-based compounds, 15,[25][26][27][28] and HgBa 2 CuO 4 ͑HBCO͒. 29 The same effect has also been reported for the low-temperature superconductor ͑LTS͒ of 2H-NbSe 2 , 30 intermetallic compound of CeRu 2 , 31 as well as organic materials such as -(BEDT-TTF) 2 Cu(NCS) 2 ͑Refs. 32,33͒ and the noncuprate oxide system of (Ba,K)BiO 3 .…”

Large Phase Shifts due to the χ (2) Cascading Nonlinearity in Large Walk-off and Loss Regimes in Semiconductors and Other Dispersive Materials

“…Further optimization of the processing conditions of the encapsulation synthesis allowed Hg-1 (Ba) 201 and Hg-1 (Ba) 223 crystals of few hundreds micrometres in size to be mechanically extracted from cavities of the polycrystalline matrix [2,3]. Precise studies on the structural [3][4][5][6], magnetic [7][8][9], electric transport [10] and specific-heat [11] properties, as well as studies based on, e.g. NMR [12] and Raman [13,14] spectroscopy, have been performed using these single-crystal samples.…”