Zobrazeno 1 - 10
of 41
pro vyhledávání: '"J O Piatek"'
Publikováno v:
New Journal of Physics, Vol 15, Iss 4, p 043024 (2013)
We carried out ac magnetic susceptibility measurements and muon spin relaxation spectroscopy on the cubic double perovskite Ba _2 YMoO _6 , down to 50 mK. Below ∼1 K the muon relaxation is typical of a magnetic insulator with a spin-liquid type gro
Externí odkaz:
https://doaj.org/article/b4e13cebffb74f2c8688d0e4378bca28
Publikováno v:
PHYSICAL REVIEW B
We present direct local-probe evidence for strongly hybridized nuclear-electronic spin states of an Ising ferromagnet LiHoF$_4$ in a transverse magnetic field. The nuclear-electronic states are addressed via a magnetic resonance in the GHz frequency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8a761784791103d5102b651493f4e24
https://doi.org/10.1103/physrevb.94.214433
https://doi.org/10.1103/physrevb.94.214433
Autor:
S. Mat'as, Karl Krämer, I. Kovacevic, P. Babkevich, Conradin Kraemer, Karel Prokes, J. O. Piatek, B. Dalla Piazza, Henrik M. Rønnow, Jens Jensen, N. Nikseresht
Publikováno v:
Physical Review B. 94
We present a systematic study of the phase diagram of ${\mathrm{LiHo}}_{x}{\mathrm{Y}}_{1\ensuremath{-}x}{\mathrm{F}}_{4}$ ($0.25\ensuremath{\le}x\ensuremath{\le}1$) Ising ferromagnets obtained from neutron scattering measurements and mean-field calc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b22b1d03b43c71df5f7b9fe34bccec9e
https://doi.org/10.1103/physrevb.94.174443
https://doi.org/10.1103/physrevb.94.174443
Autor:
Klaus Kiefer, Lukas Keller, J. O. Piatek, Thierry Strässle, Oksana Zaharko, Gabriel Aeppli, Andrey Podlesnyak, N. Nikseresht, Bastian Klemke, C. M. S. Gannarelli, Thomas Rosenbaum, Henrik M. Rønnow, Conradin Kraemer, Bastien Dalla Piazza, Karl Krämer, N. Tsyrulin, Karel Prokes
Publikováno v:
Science
SCIENCE
SCIENCE
Dropping a Dimension? In most magnetic materials, the exchange interaction causes the spins on the neighboring sites of a crystal lattice to align. In the absence of exchange interactions, dipolar interactions, which are highly orientation dependent,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aad3586c36a9b77fb7bc43dc1bf48bc1
Autor:
Henrik M. Rønnow, Jorge L. Gavilano, Karl Krämer, P. Babkevich, I. Kovacevic, J. O. Piatek, B. Dalla Piazza, S. Neithardt
Publikováno v:
Physical Review B. 90
We present a study of the model spin-glass LiHo0.5Er0.5F4 using simultaneous ac susceptibility, magnetization, and magnetocaloric effect measurements along with small angle neutron scattering (SANS) at sub-Kelvin temperatures. All measured bulk quant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07361df57b2f039da5a2c8bd18a8ff05
https://doi.org/10.1103/physrevb.90.174427
https://doi.org/10.1103/physrevb.90.174427
Autor:
J. O. Piatek, Ivica Živković, M. Diaz, P. Álvarez, Francis L. Pratt, D. Hüvonen, J. Lago, Teófilo Rojo
Publikováno v:
Physical Review B. 89
Here we present a detailed muon spin relaxation (mu SR), neutron diffraction, and ac-susceptibility study of Yb2Sn2O7 that shows that despite the onset of ferromagnetic long-range order at T-c approximate to 0.140 K, the low-temperature phase of this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db76d98d2b92acd3896e56cf0da9d3ab
https://doi.org/10.1103/physrevb.89.024421
https://doi.org/10.1103/physrevb.89.024421
Autor:
Henrik M. Rønnow, Deepa Kasinathan, K. Koepernik, J. O. Piatek, Gøran J. Nilsen, Oleg Janson, H. Rosner
Publikováno v:
Physical Review B. 88
The compound KTi(SO4)(2)center dot H2O was recently reported as a quasi-one-dimensional spin-1/2 compound with competing antiferromagnetic nearest-neighbor exchange J(1) and next-nearest-neighbor exchange J(2) along the chain with a frustration ratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c1d722cd78c71ccac2ed33173ba9b6e
https://doi.org/10.1103/physrevb.88.224410
https://doi.org/10.1103/physrevb.88.224410
Autor:
Karl Krämer, N. Nikseresht, S. Mat'as, Niels Bech Christensen, Mark Laver, Henrik M. Rønnow, J. O. Piatek, Karel Prokes, B. Dalla Piazza, Ivica Živković, N. Tsyrulin
Publikováno v:
Physical Review B. 88
We present the experimental phase diagram of LiHoxEr1-xF4, a dilution series of dipolar-coupled model magnets. The phase diagram was determined using a combination of ac susceptibility and neutron scattering. Three unique phases in addition to the Is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eae77003dbd58ea78c993364e3bae382
https://doi.org/10.1103/physrevb.88.014408
https://doi.org/10.1103/physrevb.88.014408
Autor:
J. O. Piatek, Henrik M. Rønnow, James S. Lord, Martin Míšek, Jan-Willem G. Bos, M. A. de Vries
Publikováno v:
NEW JOURNAL OF PHYSICS
We carried out AC magnetic susceptibility measurements and muon spin relaxation spectroscopy on the cubic double perovskite Ba2YMoO6, down to 50 mK. Below ~1 K the muon relaxation is typical of a magnetic insulator with a spin-liquid type ground stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::991fae69a1671ae58d060d40674a1742
http://arxiv.org/abs/1301.4982
http://arxiv.org/abs/1301.4982
Autor:
Henrik M. Rønnow, Andrew Harrison, Gøran J. Nilsen, J. R. Stewart, M. A. de Vries, J. O. Piatek, Pascale P. Deen
Publikováno v:
Physical Review Letters. 103
Neutron spectroscopy and diffuse neutron scattering on herbertsmithite [ZnCu3(OH)(6)Cl-2], a near-ideal realization of the s=1/2 kagome antiferromagnet, reveal the hallmark property of a quantum spin liquid: instantaneous short-ranged antiferromagnet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::920147161e52a276e79d932a8fad3295
https://doi.org/10.1103/physrevlett.103.237201
https://doi.org/10.1103/physrevlett.103.237201