A5049963809- Topological Materials and Phenomena
- Physics of Superconductivity and Magnetism
- Quantum and electron transport phenomena
- Quantum, superfluid, helium dynamics
- 2D Materials and Applications
- Perovskite Materials and Applications
- Magnetic properties of thin films
- Advanced Condensed Matter Physics
Freie Universität Berlin
2022-2025
Abstract Magnetic adatom chains on surfaces constitute fascinating quantum spin systems. Superconducting substrates suppress interactions with bulk electronic excitations but couple the spins to a chain of subgap Yu-Shiba-Rusinov (YSR) quasiparticles. Using scanning tunneling microscope, we investigate such correlated spin-fermion systems by constructing Fe superconducting NbSe 2 . The adatoms entirely via substrate, retaining their nature. In dimers, observe that deepest YSR state undergoes...
Magnetic adatoms on superconductors give rise to Yu-Shiba-Rusinov (YSR) states that hold considerable interest for the design of topological superconductivity. Here, we show YSR are also an ideal platform engineer structures with intricate wave function symmetries. We assemble iron atoms quasi-two-dimensional superconductor 2H-NbSe2. The functions individual extend over several nanometers enabling hybridization even at large adatom spacing. substrate can be exploited deliberately break...
Magnetic adatoms on superconductors induce Yu-Shiba-Rusinov (YSR) states, which are key to the design of low-dimensional correlated systems and topological superconductivity. Competing magnetic interactions superconducting pairing lead a rich phase diagram. Using scanning tunneling microscope (STM), we position Fe atoms <a:math...
Charge-density waves (CDWs) are correlated states of matter, in which the electronic density is modulated periodically due to and phononic interactions. Often, CDW phases coexist with other states, such as superconductivity, spin-density waves, or Mott insulators. Controlling may, therefore, enable manipulation energy landscape these interacting states. The transition metal dichalcogenide 2
Magnetic adatoms on superconductors give rise to Yu-Shiba-Rusinov (YSR) states that hold considerable interest for the design of topological superconductivity. Here, we show YSR are also an ideal platform engineer structures with intricate wave-function symmetries. We assemble iron atoms quasi-two-dimensional superconductor $2H$-NbSe$_2$. The wave functions individual extend over several nanometers enabling hybridization even at large adatom spacing. substrate can be exploited deliberately...
Charge-density waves (CDWs) are correlated states of matter, where the electronic density is modulated periodically as a consequence and phononic interactions. Often, CDW phases coexist with other states, such superconductivity, spin-density or Mott insulators. Controlling may therefore enable manipulation energy landscape these interacting states. 2H-NbSe$_2$ prime example transition metal dichalcogenide (TMDC) hosting order superconductivity. The incommensurate nature resulting in...