105Pd NMR and NQR study of the cubic heavy fermion system Ce3Pd20Si6

Znanstveni rad - Ostalo

• Autor: Ivan Jakovac; MBZ: 372514
• Autor: Mladen Horvatić; MBZ: 112333
• Autor: Eike Schwier
• Autor: Andrey Prokofiev
• Autor: Silke Paschen
• Autor: Hiroyuki Mitamura
• Autor: T Sakakibara
• Autor: Mihael S. Grbić
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

We report 105Pd NMR and NQR measurements on a single crystal of Ce3Pd20Si6, where antiferroquadrupolar and antiferromagnetic orders develop at low temperature. From the analysis of NQR and NMR spectra, we have determined the electric eld gradient (EFG) tensors and the anisotropic Knight shift (K) components for both inequivalent Pd sites - Pd(32f) and Pd(48h). The observed EFG values are in excellent agreement with our state-of-the-art DFT calculations. The principal values of the quadrupolar coupling are (20.37 +/- 0.02) MHz and (5.45 +/- 0.02) MHz, for the Pd(32f) and Pd(48h) site, respectively, which is large compared to the Larmor frequency de ned by the gyromagnetic constant gamma = 1.94838 MHz/T for 105Pd. Therefore, the complete knowledge of K and the EFG tensors is crucial to establish the correspondence between NMR spectra and crystallographic sites, which is needed for a complete analysis of the magnetic structure, static spin susceptibility, and the spin-lattice relaxation rate data and a better understanding of the groundstate of Ce3Pd20Si6.

• Ključne riječi (engleski): NMR; NQR; heavy fermion; DFT
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Ostalo
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Journal of Physics: Condensed Matter
• Brojčani podaci: vol. 32, 245601
• p-ISSN: 0953-8984
• e-ISSN: 1361-648X
• DOI: https://doi.org/10.1088/1361-648X/ab70c4
• URN:NBN: urn:nbn:hr:217:477909
• Datum objave publikacije: 2020
• Projekt: Šifra: IP-2018-01-2970; Naziv (hrvatski): Mikroskopska istraživanja induciranih faza u jako koreliranim elektronskim sustavima; Kratica: MicroS; Voditelj: Miroslav Požek; Pravna nadležnost: Hrvatska; Financijer: HRZZ; Linija financiranja: IP
• URL dokumenta: https://iopscience.iop.org/article/10.1088/1361-648X/ab70c4
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: © 2020 The Author(s). Published by IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 25 November 2019, revised 11 January 2020. Accepted for publication 28 January 2020. Published 19 March 2020.
• Datum i vrijeme pohrane: 2020-08-31 20:23:38