Zobrazeno 1 - 10
of 174
pro vyhledávání: '"Andrew D, Christianson"'
Autor:
Pyeongjae Park, E. A. Ghioldi, Andrew F. May, James A. Kolopus, Andrey A. Podlesnyak, Stuart Calder, Joseph A. M. Paddison, A. E. Trumper, L. O. Manuel, Cristian D. Batista, Matthew B. Stone, Gábor B. Halász, Andrew D. Christianson
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract The S = 1/2 triangular lattice antiferromagnet (TLAF) is a paradigmatic example of frustrated quantum magnetism. An ongoing challenge involves understanding the influence of exchange anisotropy on the collective behavior within such systems.
Externí odkaz:
https://doaj.org/article/722172f2c49740e39d53c1e09c7c9b86
Autor:
Joseph A. M. Paddison, Hao Zhang, Jiaqiang Yan, Matthew J. Cliffe, Michael A. McGuire, Seung-Hwan Do, Shang Gao, Matthew B. Stone, David Dahlbom, Kipton Barros, Cristian D. Batista, Andrew D. Christianson
Publikováno v:
npj Quantum Materials, Vol 9, Iss 1, Pp 1-8 (2024)
Abstract Magnetic materials with noncoplanar magnetic structures can show unusual physical properties driven by nontrivial topology. Topologically-active states are often multi-q structures, which are challenging to stabilize in models and to identif
Externí odkaz:
https://doaj.org/article/cd162b79c7d34a11b3138af088e0eaf7
Autor:
Pyeongjae Park, G. Sala, Daniel M. Pajerowski, Andrew F. May, James A. Kolopus, D. Dahlbom, Matthew B. Stone, Gábor B. Halász, Andrew D. Christianson
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033184 (2024)
Using the framework of semiclassical Landau-Lifshitz dynamics (LLD), we conduct a systematic investigation of the temperature-dependent spin dynamics in the S=1/2 Heisenberg square-lattice antiferromagnet (SAFM). By performing inelastic neutron scatt
Externí odkaz:
https://doaj.org/article/024355809570498285101ba381ac8678
Autor:
Gabriele Sala, Matthew B. Stone, Gábor B. Halász, Mark D. Lumsden, Andrew F. May, Daniel M. Pajerowski, Seiko Ohira-Kawamura, Koji Kaneko, Daniel G. Mazzone, Gediminas Simutis, Jakob Lass, Yasuyuki Kato, Seung-Hwan Do, Jiao Y. Y. Lin, Andrew D. Christianson
Publikováno v:
Communications Physics, Vol 6, Iss 1, Pp 1-7 (2023)
Abstract The basis for our understanding of quantum magnetism has been the study of elegantly simple model systems. However, even for the antiferromagnetic honeycomb lattice with isotropic spin interactions–one of the simplest model systems–a det
Externí odkaz:
https://doaj.org/article/a85bac7401bf42cab67ec4176311e511
Autor:
Seung-Hwan Do, Hao Zhang, David A. Dahlbom, Travis J. Williams, V. Ovidiu Garlea, Tao Hong, Tae-Hwan Jang, Sang-Wook Cheong, Jae-Hoon Park, Kipton Barros, Cristian D. Batista, Andrew D. Christianson
Publikováno v:
npj Quantum Materials, Vol 8, Iss 1, Pp 1-6 (2023)
Abstract Quantum magnets admit more than one classical limit and N-level systems with strong single-ion anisotropy are expected to be described by a classical approximation based on SU(N) coherent states. Here we test this hypothesis by modeling fini
Externí odkaz:
https://doaj.org/article/525f3856cfcd4f2fa660bb141e367a72
Autor:
Seung-Hwan Do, Hao Zhang, Travis J. Williams, Tao Hong, V. Ovidiu Garlea, J. A. Rodriguez-Rivera, Tae-Hwan Jang, Sang-Wook Cheong, Jae-Hoon Park, Cristian D. Batista, Andrew D. Christianson
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-12 (2021)
Anisotropic spin S >1/2 quantum magnets can have multiple low energy modes. In this manuscript, the authors study the interaction of such low energy modes in the S = 1 antiferromagnet Ba2FeSi2O7 by combining neutron scattering measurements with an SU
Externí odkaz:
https://doaj.org/article/cdd72308612b4a0487a13c90826b3202
Publikováno v:
Communications Physics, Vol 3, Iss 1, Pp 1-9 (2020)
Understanding the spin-wave excitations of chiral magnetism is important to confirm such exotic magnetic order. Here, the authors obtain the spin wave spectrum for a given magnetic structure from Monte Carlo simulations and analyse the signatures whe
Externí odkaz:
https://doaj.org/article/fe4c2e834b074218860c599efa4d8d75
Autor:
Brian C. Sales, Ke Jin, Hongbin Bei, John Nichols, Matthew F. Chisholm, Andrew F. May, Nicholas P. Butch, Andrew D. Christianson, Michael A. McGuire
Publikováno v:
npj Quantum Materials, Vol 2, Iss 1, Pp 1-6 (2017)
Quantum criticality: metallic ferromagnetic systems A family of metallic solid solutions—alloys characterized by extreme chemical disorder—are found to exhibit quantum critical behaviour. Few metallic systems are known to show this type of phase
Externí odkaz:
https://doaj.org/article/829316dbd86d4aa8a57aed81e89a3eff
Autor:
Minseong Lee, Rico Schönemann, Hao Zhang, David Dahlbom, Tae-Hwan Jang, Seung-Hwan Do, Andrew D. Christianson, Sang-Wook Cheong, Jae-Hoon Park, Eric Brosha, Marcelo Jaime, Kipton Barros, Cristian D. Batista, Vivien S. Zapf
Publikováno v:
Physical Review B. 107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83006c7dfce70587ea3675345dec5742
https://doi.org/10.1103/physrevb.107.144427
https://doi.org/10.1103/physrevb.107.144427
Autor:
Shang Gao, Ganesh Pokharel, Andrew F. May, Joseph A. M. Paddison, Chris Pasco, Yaohua Liu, Keith M. Taddei, Stuart Calder, David G. Mandrus, Matthew B. Stone, Andrew D. Christianson
Publikováno v:
Physical Review Letters. 129
Competition among exchange interactions is able to induce novel spin correlations on a bipartite lattice without geometrical frustration. A prototype example is the spiral spin liquid, which is a correlated paramagnetic state characterized by sub-dim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bedf2e4093a8f7868208679a619ed35
https://doi.org/10.1103/physrevlett.129.237202
https://doi.org/10.1103/physrevlett.129.237202