1 / 30

Title

Title. Vortex matter in presence of disorder. Eli Zeldov Weizmann Institute of Science Rehovot, Israel. BSCCO PD. 5. 1. 0. 4. 1. 0. 3. 1. 0. T cp. 2. 1. 0. 1. 1. 0. 0. 2. 0. 4. 0. 6. 0. 8. 0. 1. 0. 0. Vortex matter phase diagram in Bi 2 Sr 2 CaCu 2 O 8. H c2.

saber
Download Presentation

Title

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Title Vortex matter in presence of disorder Eli Zeldov Weizmann Institute of Science Rehovot, Israel

  2. BSCCO PD 5 1 0 4 1 0 3 1 0 Tcp 2 1 0 1 1 0 0 2 0 4 0 6 0 8 0 1 0 0 Vortex matter phase diagram in Bi2Sr2CaCu2O8 Hc2 depinning liquid / gas disordered second magnetization peak B [G] first-order transition quasi-ordered-lattice (Bragg glass) T [K]

  3. Second peak loop + shaking Vortex ‘shaking’ with Hac Bi2Sr2CaCu2O8 crystal Hac Hdc GaAs 0 -50 -100 -150 0 0.3 0.6 0.9 1.2 Magnetization loop with second magnetization peak B - Ha [G] Bsp T = 26 K Ha [kOe]

  4. Koshelev crossing lattices Bi Sr CaCu O 2 2 2 x Hdc Hac y z x Crossing lattices: Pancake vortices and Josephson vortices CuO2 planes Pancake vortex Vortex line

  5. Magnetization loop Magnetization loop with ‘vortex shaking’ B - Ha [ G ] no Hac T = 30 K Ha [Oe]

  6. Magnetization loop with Hac T = 38 K < Tcp -24 B - Ha [ G ] -26 with Hac -28 300 320 340 Ha [Oe] Magnetization loop with ‘vortex shaking’ with Hac B - Ha [ G ] no Hac T = 30 K Ha [Oe]

  7. Bm(T) with Hac First-order phase transition line Bm(T) liquid Bsp(T) Tcp Bm(T) Bm(T) [G] solid T [K]

  8. Bm(T) with Hac zoom Tcp Inverse melting of the vortex lattice liquid Tcp Bm(T) [G] lattice T [K]

  9. BSCCO PD summary 5 1 0 Hc2 4 liquid / gas 1 0 amorphous 3 1 0 B [G] disorder driven thermally driven 2 1 0 quasi-ordered-lattice (Bragg glass) 1 1 0 0 2 0 4 0 6 0 8 0 1 0 0 T [K] Vortex matter phase diagram in Bi2Sr2CaCu2O8

  10. LTS phase diagram Phase diagram of low-Tc superconductors disordered phase H Hc2 ordered phase (Bragg glass) Tc T

  11. NbSe2 PE strip Strip and Corbino Ic at peak effect Fe doped NbSe2 0.2 T Strip Ic Hc2(T)

  12. NbSe2 PE strip + Corbino Ordered Phase Disordered Phase Strip and Corbino Ic at peak effect Fe doped NbSe2 0.2 T Strip Ic Corbino Ic Hc2(T)

  13. Edge contamination schematics 1 v surface barrier ordered lattice Hdc Edge-contamination mechanism Idc

  14. Edge contamination schematics 2 v surface barrier Hdc Edge-contamination mechanism Idc

  15. Edge contamination schematics 3 v Hdc Edge-contamination mechanism disordered phase ordered phase Idc

  16. Edge contamination - surface boiling v surface boiling Hdc Edge-contamination mechanism disordered phase ordered phase Idc

  17. Edge contamination negative current v Hdc Edge-contamination mechanism surface boiling disordered phase ordered phase Idc

  18. Edge contamination no current v Hdc Edge-contamination mechanism surface boiling ordered phase disordered phase Idc

  19. Edge contamination - Hall sensors v Hdc Edge-contamination mechanism low J high J surface boiling array of Hall sensors Idc

  20. LTS phase diagram with Corbino disk Hc2 disordered phase H ordered phase (Bragg glass) Tc T Phase diagram of low-Tc superconductors No edge contamination

  21. LTS PD w contamination Hc2 disordered phase H ordered phase (Bragg glass) Tc T Phase diagram of low-Tc superconductors

  22. LTS PD w dynamic coexistence Phase diagram of low-Tc superconductors Hc2 disordered phase Dynamic coexistence due to edge contamination H ordered phase (Bragg glass) Tc T

  23. BSCCO phase diagram 5 1 0 Hc2 4 liquid / gas 1 0 amorphous 3 1 0 B [G] disorder driven thermally driven 2 1 0 Bragg glass 1 1 0 0 2 0 4 0 6 0 8 0 1 0 0 T [K] Vortex matter phase diagram in Bi2Sr2CaCu2O8

  24. Differential MO technique B(r) dB(r) B(r) QF=aB Garnet indicator Superconductor T dT Ha  dHa Ha Differential magneto-optical system CCD camera Microscope Analyzer Polarizer lamp Solenoid He Cryostat

  25. Movie BSCCO#3 large color

  26. Guilin mist mountains

  27. Guilin mountains with water

  28. Crystal with mask and CDs porous 90mm Braggglass Magnetic decoration Artificial disorder by heavy ion irradiation SST mask Columnar defects by 1 GeV Pb irradiation through perforated mask

  29. Movie Satya Bf=20G, B=50G

  30. Thanks Special thanks …

More Related