Search for dissertations about: "pseudogap"

Showing result 1 - 5 of 8 swedish dissertations containing the word pseudogap.

  2. 1. Intrinsic tunneling spectroscopy of low-Tc cuprate superconductors : Pseudogap, fluctuations and electrical doping

    Author : Thorsten Jacobs; Vladimir M. Krasnov; Magnus Andersson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bi-2201; Bi-2212; low-Tc; cuprates; intrinsic tunneling; transport measurements; pseudogap; fluctuations; electrical doping; Physics; fysik;

    Abstract : In this thesis, intrinsic tunneling and magnetic transport measurements of the cuprate superconductor Bi2+xSr2-yCuO6+δ (Bi-2201) are presented. The compound is characterized by a single-CuO2 plane, has a very low critical temperature Tc ~ 4K and a relatively low upper critical field Hc2 ~ 10T. READ MORE

  4. 2. Unraveling the cuprate superconductor phase diagram : Intrinsic tunneling spectroscopy and electrical doping

    Author : Thorsten Jacobs; Vladimir Krasnov; Dominik Munzar; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Superconductivity; cuprates; intrinsic tunneling spectroscopy; Josephson junctions; mesa structures; micro nanoscale fabrication; electrical doping; pseudogap; Bi-2212; Bi-2201; fysik; Physics;

    Abstract : High-temperature superconductors belong to the group of strongly correlated materials. In these compounds, complex repulsive electron interactions and a large number of degrees of freedom lead to a rich variety of states of matter. READ MORE

  5. 3. From exotic superconductivity to QCD and back again searching things in common

    Author : Egor Babaev; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; Chrial symmetry; Pseudogap; vortices; knots; solitons; Teoretisk fysik; Physics; Fysik;

    Abstract : This thesis is devoted largely to two new features which Particle Physics and Condensed Matter theory have in common. The first part of the thesis is a discussion of formation of phases precursory to the chiral phase transition in relativistic models with four-fermion interactions, considered as toy models for QCD. READ MORE

  6. 4. Raman Scattering and Neutron Diffraction Studies of Manganites and Cuprates

    Author : Joakim Bäckström; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; high-T-c-superconductivity; Reverse Monte Carlo modelling; oxides; strongly correlated systems; manganites; cuprates; neutron diffraction; colossal magnetoresistance; Raman spectroscopy;

    Abstract : This thesis is devoted to experimental studies of two classes of strongly correlated transition metal oxides, namely cuprates and manganite perovskites. Manganites generally display complex phase diagrams, including the so-called colossal magnetoresistance effect. READ MORE

  7. 5. Fluctuating superconductivity and pair-density wave order in the cuprate superconductors

    Author : Jonatan Wårdh; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cuprates; fluctuating superconductivity; pair-density wave; Ginzburg-Landau theory; vestigial order; nematicity; paraconductivity;

    Abstract : High-temperature superconductors are some of nature’s most enigmatic materials. Besides carrying a supercurrent, these materials manifest a range of electronic and structural orders. READ MORE