Zobrazeno 1 - 10
of 330
pro vyhledávání: '"Roderich Moessner"'
Publikováno v:
npj Quantum Materials, Vol 8, Iss 1, Pp 1-7 (2023)
Abstract We determine the phase diagram of a bilayer, Yao-Lee spin-orbital model with inter-layer interactions (J), for several stackings and moiré superlattices. For AA stacking, a gapped $${{\mathbb{Z}}}_{2}$$ Z 2 quantum spin liquid phase emerges
Externí odkaz:
https://doaj.org/article/19f71914ec654706b5b75e9f85fdb99f
Autor:
Graham Baker, Timothy W. Branch, J. S. Bobowski, James Day, Davide Valentinis, Mohamed Oudah, Philippa McGuinness, Seunghyun Khim, Piotr Surówka, Yoshiteru Maeno, Thomas Scaffidi, Roderich Moessner, Jörg Schmalian, Andrew P. Mackenzie, D. A. Bonn
Publikováno v:
Physical Review X, Vol 14, Iss 1, p 011018 (2024)
The motion of electrons in the vast majority of conductors is diffusive, obeying Ohm’s law. However, the recent discovery and growth of high-purity materials with extremely long electronic mean free paths has sparked interest in non-Ohmic alternati
Externí odkaz:
https://doaj.org/article/be19e31cfc7f43f3bac77b63b2fc6201
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p L022062 (2023)
We study the phase diagram of a bilayer quantum spin liquid model with Kitaev-type interactions on a square lattice. We show that the low energy limit is described by a π-flux Hubbard model with an enhanced SO(4) symmetry. The antiferromagnetic Mott
Externí odkaz:
https://doaj.org/article/810bc04c44d746318c02a7bf320a1ac8
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043008 (2023)
We analyze a new class of time-periodic nonreciprocal dynamics in interacting chaotic classical spin systems, whose equations of motion are conservative (phase-space-volume-preserving) yet possess no symplectic structure. As a result, the dynamics of
Externí odkaz:
https://doaj.org/article/9fc5a5d335b64ad28716541c6fc0ff17
Autor:
Anish Bhardwaj, Shu Zhang, Han Yan, Roderich Moessner, Andriy H. Nevidomskyy, Hitesh J. Changlani
Publikováno v:
npj Quantum Materials, Vol 7, Iss 1, Pp 1-8 (2022)
Abstract The search for quantum spin liquids—topological magnets with fractionalized excitations—has been a central theme in condensed matter and materials physics. Despite numerous theoretical proposals, connecting experiment with detailed theor
Externí odkaz:
https://doaj.org/article/fa42c1a990244d348bed906974480243
Publikováno v:
PRX Quantum, Vol 4, Iss 3, p 030319 (2023)
Simulation of continuous-time evolution requires time discretization on both classical and quantum computers. A finer time step improves simulation precision but it inevitably leads to increased computational efforts. This is particularly costly for
Externí odkaz:
https://doaj.org/article/3406c0928c9e4b3193469d33537dac6b
Publikováno v:
Physical Review Research, Vol 4, Iss 4, p 043019 (2022)
The Heisenberg antiferromagnet on the kagome lattice is an archetypal instance of how large ground-state degeneracies arise, and how they may get resolved by thermal and quantum fluctuations. Augmenting the Heisenberg model by chiral spin interaction
Externí odkaz:
https://doaj.org/article/8fa24916f09d4882b9c36511e9a5b4d4
Autor:
Anjana M. Samarakoon, André Sokolowski, Bastian Klemke, Ralf Feyerherm, Michael Meissner, R. A. Borzi, Feng Ye, Qiang Zhang, Zhiling Dun, Haidong Zhou, T. Egami, Jonathan N. Hallén, Ludovic Jaubert, Claudio Castelnovo, Roderich Moessner, S. A. Grigera, D. Alan Tennant
Publikováno v:
Physical Review Research, Vol 4, Iss 3, p 033159 (2022)
The origin and nature of glassy dynamics presents one of the central enigmas of condensed-matter physics across a broad range of systems ranging from window glass to spin glasses. The spin-ice compound Dy_{2}Ti_{2}O_{7}, which is perhaps best known a
Externí odkaz:
https://doaj.org/article/e4dd183ae93244c58e00aee948f2267a
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
Universal non-equilibrium behaviour can emerge in physical systems when they are driven through a parameter regime where their energy gap closes. Dóra et al. show that the Kibble-Zurek scaling associated with exceptional points in non-Hermitian syst
Externí odkaz:
https://doaj.org/article/8978b48f0b0f4f68bcb785a24b170f2c
Publikováno v:
PRX Quantum, Vol 2, Iss 3, p 030346 (2021)
Recent progress in the realm of noisy intermediate-scale quantum (NISQ) devices [J. Preskill, Quantum 2, 79 (2018)] represents an exciting opportunity for many-body physics by introducing new laboratory platforms with unprecedented control and measur
Externí odkaz:
https://doaj.org/article/1bff34371eb14a669ea78198f9f585ad