Search for dissertations about: "quantum criticality"

Found 5 swedish dissertations containing the words quantum criticality.

  2. 1. Probing quantum criticality in heavy fermion CeCoIn5

    Author : Akash Khansili; Andreas Rydh; Venkata Kamalakar Mutta; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Strongly correlated electron systems; heavy fermion; quantum criticality; Physics; fysik;

    Abstract : Understanding the low-temperature properties of strongly correlated materials requires accurate measurement of the physical properties of these systems. Specific heat and nuclear spin-lattice relaxation are two such properties that allow the investigation of the electronic behavior of the system. READ MORE

  4. 2. Criticality and Frustration: Classical and Quantum Spin Models in Two Dimensions

    Author : Per Fröjdh; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : We investigate two-dimensional spin models and begin with an introduction to critical phenomena with emphasis on classical systems with boundaries and conformal invariance. Then we introduce the antiferromagnetic quantum Heisenberg model with frustrating interactions. READ MORE

  5. 3. The science of imagining solutions : design becoming conscious of itself through design

    Author : Søren Rosenbak; Johan Redström; Carl DiSalvo; Andrew Morrisson; Umeå universitet; []
    Keywords : HUMANIORA; HUMANITIES; design; pataphysics; possibility; imaginaries; imagination; the artificial; critical practice; critical design; speculative design; design fiction; participatory design; smart cities; lies; metadata; surveillance; failures; research through design; constructive design research; practice-based design research; programmatic research; epiphenomenology; quantum poetics; design; design; industrial design; industridesign;

    Abstract : This dissertation addresses a paradox in design: we currently live in a day and age that is fundamentally conditioned by artifice on all scales, and principled by a deep sense of contingency and possibility. In this world, anything could always be something else. READ MORE

  6. 4. Dynamics of complex magnetic systems

    Author : Kristian Jonason; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap; Solid State Physics; fasta tillståndets fysik;

    Abstract : Dynamic magnetic properties of disordered and frustrated magnetic systems have beenexperimentally investigated utilising SQUID (Superconducting Quantum Interference Device)magnetometry. The studied systems are spin glasses, reentrant ferromagnets, reentrantantiferromagnets and diluted Ising antiferromagnets. READ MORE

  7. 5. Phase transitions and phase frustration in multicomponent superconductors

    Author : Daniel Weston; Egor Babaev; Mats Wallin; Ilya Eremin; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics;

    Abstract : Multicomponent superconductors described by several complex matter fields have properties radically different from those of their single-component counterparts. Examples include partially ordered phases and spontaneous breaking of time-reversal symmetry due to frustration between Josephson-coupled components. READ MORE