Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Bewley, Robert I."'
Autor:
Woodland, Leonie, Macdougal, David, Cabrera, Ivelisse M., Thompson, Jordan D., Prabhakaran, D., Bewley, Robert I., Coldea, Radu
Publikováno v:
Phys. Rev. B 108, 184416 (2023)
The Ising chain realizes the fundamental paradigm of spin fractionalization, where locally flipping a spin creates two domain walls (spinons) that can separate apart at no energy cost. In a quasi-one-dimensional system, the mean-field effects of the
Externí odkaz:
http://arxiv.org/abs/2308.07699
Autor:
Le, Manh Duc, Guidi, Tatiana, Bewley, Robert I., Stewart, J. Ross, Schooneveld, Erik M., Raspino, Davide, Pooley, Daniel E., Boxall, Jonathan, Gascoyne, Kelvin F., Rhodes, Nigel J., Moorby, Simon R., Templeman, David J., Afford, Luke C., Waller, Simon P., Zacek, Daniel, Shaw, Rebecca C. R.
Publikováno v:
Nucl. Instrum. Methods Phys. Res. A 1056 (2023) 168646
The MARI direct geometry time-of-flight neutron spectrometer at ISIS has been upgraded with an $m=3$ supermirror guide and new detector electronics. This has resulted in a flux gain of ${\approx}6{\times}$ at $\lambda=1.8$ {\AA}, and improvements on
Externí odkaz:
http://arxiv.org/abs/2211.07821
Autor:
Macdougal, David, Williams, Stephanie, Prabhakaran, Dharmalingam, Bewley, Robert I., Voneshen, David J., Coldea, Radu
Publikováno v:
Phys. Rev. B 102, 064421 (2020)
We explore the magnetic excitations of the spin-1/2 triangular antiferromagnet Ba3CoSb2O9 in its 120 degree ordered phase using single-crystal high-resolution inelastic neutron scattering. Sharp magnons with no decay are observed throughout reciproca
Externí odkaz:
http://arxiv.org/abs/2006.15554
Autor:
Li, Yuesheng, Adroja, Devashibhai, Voneshen, David, Bewley, Robert I., Zhang, Qingming, Tsirlin, Alexander A., Gegenwart, Philipp
Publikováno v:
Nat. Commun. 8, 15814 (2017)
Since its proposal by Anderson, resonating valence bonds (RVB) formed by a superposition of fluctuating singlet pairs have been a paradigmatic concept in understanding quantum spin liquids (QSL). Here, we show that excitations related to singlet brea
Externí odkaz:
http://arxiv.org/abs/1704.06468
Autor:
Li, Yuesheng, Adroja, Devashibhai, Bewley, Robert I., Voneshen, David, Tsirlin, Alexander A., Gegenwart, Philipp, Zhang, Qingming
Publikováno v:
Phys. Rev. Lett. 118, 107202 (2017)
We apply moderate-high-energy inelastic neutron scattering (INS) measurements to investigate Yb$^{3+}$ crystalline electric field (CEF) levels in the triangular spin-liquid candidate YbMgGaO$_4$. Three CEF excitations from the ground-state Kramers do
Externí odkaz:
http://arxiv.org/abs/1702.01981
Autor:
Poole, Amy, Pomjakushin, Vladimir, Uldry, Anne-Christine, Delley, Bernhard, Prevost, Bobby, Desilets-Benoit, Alexandre, Bianchi, Andrea D, Bewley, Robert I, Hansen, Britt R, Klimczuk, Thomasz, Cava, Robert J, Kenzelmann, Michel
Publikováno v:
Phys. Rev. B 89, 224511 (2014)
Neutron diffraction and inelastic spectroscopy is used to characterize the magnetic Hamiltonian of SrHo2O4 and SrDy2O4. Through a detailed computation of the crystal-field levels we find site- dependent anisotropic single-ion magnetism in both materi
Externí odkaz:
http://arxiv.org/abs/1401.3265
Publikováno v:
Journal of Chemical Physics; 2/28/2011, Vol. 134 Issue 8, p084503, 7p, 1 Diagram, 4 Charts, 7 Graphs
Autor:
Alekseev, Pavel A., Mignot, Jean-Michel, Nemkovski, Kirill S., Nefeodova, Elena V., Lazukov, Vladimir N., Karpunin, Denis Yu., Bewley, Robert I., Gribanov, Alexandr V.
Publikováno v:
In Physica B: Physics of Condensed Matter 2008 403(5):864-865
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