Nonreciprocal transport and optical phenomena in quantum materials

N Nagaosa, Y Yanase - Annual Review of Condensed Matter …, 2024 - annualreviews.org
In noncentrosymmetric materials, the responses (for example, electrical and optical)
generally depend on the direction of the external stimuli, called nonreciprocal phenomena …

Opportunities in topological insulator devices

O Breunig, Y Ando - Nature Reviews Physics, 2022 - nature.com
Topological insulators (TIs) hold promise as a platform for unique quantum phenomena.
However, realizing these phenomena experimentally requires sophisticated devices. In this …

Superconducting diode effect due to magnetochiral anisotropy in topological insulators and Rashba nanowires

HF Legg, D Loss, J Klinovaja - Physical Review B, 2022 - APS
The critical current of a superconductor can depend on the direction of current flow due to
magnetochiral anisotropy when both inversion and time-reversal symmetry are broken, an …

Effect of Rashba and Dresselhaus spin–orbit coupling on supercurrent rectification and magnetochiral anisotropy of ballistic Josephson junctions

C Baumgartner, L Fuchs, A Costa… - Journal of Physics …, 2022 - iopscience.iop.org
Simultaneous breaking of inversion-and time-reversal symmetry in Josephson junction (JJ)
leads to a possible violation of the I (φ)=− I (− φ) equality for the current–phase relation. This …

Parity-protected superconducting diode effect in topological Josephson junctions

HF Legg, K Laubscher, D Loss, J Klinovaja - Physical Review B, 2023 - APS
In bulk superconductors or Josephson junctions formed in materials with spin-orbit
interaction, the critical current can depend on the direction of current flow or of applied …

Giant Magnetochiral Anisotropy in Weyl Semimetal Induced by Diverging Berry Curvature

T Yokouchi, Y Ikeda, T Morimoto, Y Shiomi - Physical Review Letters, 2023 - APS
The concept of Berry curvature is essential for various transport phenomena. However, an
effect of the Berry curvature on magnetochiral anisotropy, ie, nonreciprocal …

Observation of giant non-reciprocal charge transport from quantum Hall states in a topological insulator

C Li, R Wang, S Zhang, Y Qin, Z Ying, B Wei, Z Dai… - Nature Materials, 2024 - nature.com
Symmetry breaking in quantum materials is of great importance and can lead to non-
reciprocal charge transport. Topological insulators provide a unique platform to study non …

Signatures of a surface spin–orbital chiral metal

F Mazzola, W Brzezicki, MT Mercaldo, A Guarino… - Nature, 2024 - nature.com
The relation between crystal symmetries, electron correlations and electronic structure
steers the formation of a large array of unconventional phases of matter, including magneto …

Top-down fabrication of bulk-insulating topological insulator nanowires for quantum devices

M Rößler, D Fan, F Münning, HF Legg… - Nano Letters, 2023 - ACS Publications
In a nanowire (NW) of a three-dimensional topological insulator (TI), the quantum
confinement of topological surface states leads to a peculiar sub-band structure that is useful …

Hole spin qubits in thin curved quantum wells

S Bosco, D Loss - Physical Review Applied, 2022 - APS
Hole spin qubits are frontrunner platforms for scalable quantum computers because of their
large spin-orbit interaction that enables ultrafast all-electric qubit control at low power. The …