Advanced Seminar SS 2017

"Recent highlights in experimental solid-state physics: Advanced Materials"

Mo. 14:00-15:00 h at the Seminar Room 201 of the II. Physikalisches Institut, University of Cologne.

In this seminar we want to introduce different classes of materials where geometric constraints and/or competing interactions result in new physical phenomena. One basic example is the breakdown of the standard quasiparticle description of electronic excitations in one-dimensional systems, where fractionalized excitations of non-integer charge or spin may occur. Other examples may arise from the competition between the spin-orbit coupling, which is a single-ion effect, and the many-body physics in the crystal lattice arising from the crystal electric field and/or the band formation. During the seminar various of such "Advanced Materials" shall be discussed with a special focus on systems, which are related to the current research of the various experimental groups at the Institute of Physics II of the University of Cologne. The aim of the talks is to present the basic new phenomena of these materials, to give an overview about the scientific background and to discuss the used experimental techniques.

Talks

Date	Title	Tutor	Speaker
22.5.	Dilute ferroelectric superconductors	X. Lin	L. Pitz-Paal	pdf
29.5.	Quantum criticality in 1‐dimensional magnets	T. Lorenz	P. Stein	pdf
12.6.	Dynamical processes in Topological Insulators Anomalous dynamics in spin ice	Y. Mukai C. Grams	D. Finck M. Glaß	pdf pdf
19.6.	Emergent phenomena at perovskite oxide interfaces Graphene Nanoribbons	I. Vrejoiu M. Grüneis	M. Seckin T. Pradella	pdf pdf
26.6.	Topological superconductors	Y. Ando	J. Pohl	pdf
3.7.	Sandwich molecular nanowires: new type of magnets	T. Michely	L. Thomkins	pdf
10.7.	Layered high‐T c superconductors: a) Cuprate    b) Iron‐Arsenides	M. Braden	A. Herman T. Hartl	pdf pdf
17.7.	Role of spin‐orbit coupling in iridates	M. Grüninger	C. Loo	pdf
24.7.	Majorana Fermion excitations in RuCl3	T. Koethe	C. Reinhoffer	pdf