New Physics with Strongly Correlated and Spin-Orbit Coupled Electrons

Grant number: FT180100211 | Funding period: 2018 - 2022

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Abstract

This project aims to identify new physics in quantum magnets and emergent phenomena in solids where the electrons are strongly coupled and intertwined in a complex manner. As a consequence, quantum effects are dramatically enhanced and, in certain situations, force the electrons to split into different exotic particles. This project expects to identify suitable physical systems, candidate materials and appropriate conditions required for the experimental observation of this phenomena with neutron scattering methods. The advanced materials and exotic particles identified in this project will inform the development of next generation technologies, becoming the quantum bits in future quantum co..

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Related publications (15)

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Competition of first-order and second-order topology on the honeycomb lattice

Matthew Bunney, Tomonari Mizoguchi, Yasuhiro Hatsugai, Stephan Rachel

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From high T-c to low T-c: Multiorbital effects in transition metal oxides

Michael Klett, Tilman Schwemmer, Sebastian Wolf, Xianxin Wu, David Riegler, Andreas Dittmaier, Domenico Di Sante, Gang Li, Werner Hanke, Stephan Rachel, Ronny Thomale

2021-09-14

Despite the structural resemblance of certain cuprate and nickelate parent compounds there is a striking spread of Tc among such t..

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Spin-orbit coupled superconductivity: Rashba-Hubbard model on the square lattice

Sebastian Wolf, Stephan Rachel

2020-11-30

The weak-coupling renormalization group method is an asymptotically exact method to find superconducting instabilities of a lattic..

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Impurity bound states as detectors of topological band structures revisited

Seydou-Samba Diop, Lars Fritz, Matthias Vojta, Stephan Rachel

2020-06-09

Band structures of topological insulators are characterized by nonlocal topological invariants. Consequently, proposals for the ex..

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Laser Modulation of Superconductivity in a Cryogenic Wide-field Nitrogen-Vacancy Microscope.

Scott E Lillie, David A Broadway, Nikolai Dontschuk, Sam C Scholten, Brett C Johnson, Sebastian Wolf, Stephan Rachel, Lloyd CL Hollenberg, Jean-Philippe Tetienne

2020-03-11

We realize a cryogenic wide-field nitrogen-vacancy microscope and use it to image Abrikosov vortices and transport currents in a s..

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Stability of disordered topological superconducting phases in magnet-superconductor hybrid systems

Eric Mascot, Chaitra Agrahar, Stephan Rachel, Dirk K Morr

2019-12-02

Magnet-superconductor hybrid heterostructures constitute a promising candidate system for the quantum engineering of chiral topolo..

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Dimensional tuning of Majorana fermions and real space counting of the Chern number

Eric Mascot, Sagen Cocklin, Stephan Rachel, Dirk K Morr

2019-11-21

We demonstrate that it is possible to use atomic manipulation techniques to adiabatically tune between one-dimensional and two-dim..

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Magnon Landau Levels and Emergent Supersymmetry in Strained Antiferromagnets

Mary Madelynn Nayga, Stephan Rachel, Matthias Vojta

2019-11-15

Inhomogeneous strain applied to lattice systems can induce artificial gauge fields for particles moving on this lattice. Here we d..

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Correlation-Driven Charge Order in a Frustrated Two-Dimensional Atom Lattice

F Adler, S Rachel, M Laubach, J Maklar, A Fleszar, J Schafer, R Claessen

2019-08-21

We thoroughly examine the ground state of the triangular lattice of Pb on Si(111) using scanning tunneling microscopy and spectros..

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Atomic-scale interface engineering of Majorana edge modes in a 2D magnet-superconductor hybrid system

Alexandra Palacio-Morales, Eric Mascot, Sagen Cocklin, Howon Kim, Stephan Rachel, Dirk K Morr, Roland Wiesendanger

2019-07-01

Topological superconductors are predicted to harbor exotic boundary states-Majorana zero-energy modes-whose non-Abelian braiding s..

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Quantum and Classical Phases of the Pyrochlore Heisenberg Model with Competing Interactions

Yasir Iqbal, Tobias Mueller, Pratyay Ghosh, Michel JP Gingras, Harald Jeschke, Stephan Rachel, Johannes Reuther, Ronny Thomale

2019-01-08

We investigate the quantum Heisenberg model on the pyrochlore lattice for a generic spin S in the presence of nearest-neighbor J1 ..

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Exact excited states of nonintegrable models

Sanjay Moudgalya, Stephan Rachel, B Andrei Bernevig, Nicolas Regnault

2018-12-27

We discuss a method of numerically identifying exact energy eigenstates for a finite system, whose form can then be obtained analy..

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Unconventional superconductivity in the extended Hubbard model: Weak-coupling renormalization group

Sebastian Wolf, Thomas L Schmidt, Stephan Rachel

2018-11-28

We employ the weak-coupling renormalization group approach to study unconventional superconducting phases emerging in the extended..

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Strain- and pressure-tuned magnetic interactions in honeycomb Kitaev materials

Ravi Yadav, Stephan Rachel, Liviu Hozoi, Jeroen van den Brink, George Jackeli

2018-09-20

A range of honeycomb-lattice compounds has been proposed and investigated in the search for a topological Kitaev spin liquid. Howe..

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Anisotropic susceptibilities in the honeycomb Kitaev system alpha-RuCl3

P Lampen-Kelley, S Rachel, J Reuther, J-Q Yan, A Banerjee, CA Bridges, HB Cao, SE Nagler, D Mandrus

2018-09-12

The magnetic insulator α-RuCl3 is a promising candidate to realize Kitaev interactions on a quasi-two-dimensional honeycomb lattic..

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