Ultralow thermal conductivity from transverse acoustic phonon suppression in distorted crystalline α-MgAgSb

Autor: Xiyang Li, Peng-Fei Liu, Enyue Zhao, Zhigang Zhang, Tatiana Guidi, Manh Duc Le, Maxim Avdeev, Kazutaka Ikeda, Toshiya Otomo, Maiko Kofu, Kenji Nakajima, Jie Chen, Lunhua He, Yang Ren, Xun-Li Wang, Bao-Tian Wang, Zhifeng Ren, Huaizhou Zhao, Fangwei Wang

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)

In order to optimize thermoelectric (TE) materials which are used to convert thermal energy and electrical energy, the underlying physics needs to be understood. Here, the authors show that by exploiting static local structure distortion, transverse

Externí odkaz: https://doaj.org/article/b2faf42e0c404ff3a113744e46106b14

Inelastic Neutron Scattering Study of the Spin Dynamics in the Breathing Pyrochlore System LiGa0.95In0.05Cr4O8

Autor: Manh Duc Le, Yu Tanaka, Masashi Takigawa, Rafal Wawrzyńczak, Zenji Hiroi, Yoshihiko Okamoto, Tatiana Guidi, Takeshi Yajima, Gøran J. Nilsen

The A-site ordered chromate spinels LiGa1-xInxCr4O8 host a network of size-alternating spin-3/2 Cr3+ tetrahedra known as a 'breathing' pyrochlore lattice. For the x=0.05 composition, the complex magneto-structural ordering observed in the parent x=0

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aeaaf62532cb03968c71e6d688d33373
http://arxiv.org/abs/2301.05064

Microscopic collective dynamics in liquid neon-deuterium mixtures: Inelastic neutron scattering and quantum simulations

Autor: Daniele Colognesi, Ubaldo Bafile, Eleonora Guarini, Tatiana Guidi, Martin Neumann

Publikováno v: Physical Review E. 105

In this paper a combined neutron scattering and quantum simulation study of the collective dynamics in liquid Ne-D_{2} mixtures, at a temperature of T=30K and in the wave-vector transfer range 4 nm^{-1}q51nm^{-1}, is presented. Two D_{2} concentratio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d87370dd60928bff097b80d05a251d8
https://doi.org/10.1103/physreve.105.054603

Magnetic-field-controlled spin fluctuations and quantum criticality in Sr3Ru2O7

Autor: Robert Bewley, Robin Perry, Christopher Lester, Tatiana Guidi, Andrew Wildes, Mark Laver, A. Hiess, T. P. Croft, Stephen M Hayden, E. M. Forgan, Silvia Ramos

Publikováno v: Nature Communications
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
Lester, C, Ramos, S, Perry, R S, Croft, T P, Laver, M, Bewley, R I, Guidi, T, Hiess, A, Wildes, A, Forgan, E M & Hayden, S M 2021, ' Magnetic-field-controlled spin fluctuations and quantum critically in Sr3Ru2O7 ', Nature Communications, vol. 12, 5798 . https://doi.org/10.1038/s41467-021-26068-3
'Nature Communications ', vol: 12, pages: 5798-1-5798-6 (2021)

When the transition temperature of a continuous phase transition is tuned to absolute zero, new ordered phases and physical behaviour emerge in the vicinity of the resulting quantum critical point. Sr3Ru2O7 can be tuned through quantum criticality wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a667341b000627067485edb496fb9987
https://doi.org/10.1038/s41467-021-26068-3

Neutron Studies of a High Spin Fe19 Molecular Nanodisc

Autor: Annie K. Powell, Francis L. Pratt, Christopher E. Anson, Tatiana Guidi, Stephen J. Blundell, Jinkui Tang, Pascal Manuel

Publikováno v: Magnetochemistry, Vol 7, Iss 74, p 74 (2021)
Magnetochemistry, 7 (6), 74
Magnetochemistry; Volume 7; Issue 6; Pages: 74

The molecular cluster system [Fe19(metheidi)10(OH)14O6(H2O)12]NO3·24H2O, abbreviated as Fe19, contains nineteen Fe(III) ions arranged in a disc-like structure with the total spin S = 35/2. For the first order, it behaves magnetically as a single mol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::243f735672935b00c03adb0af908dd6f
https://www.mdpi.com/2312-7481/7/6/74