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The magnetic nature of low dimensional compound, CrCl$_3$, was investigated by muon spin rotation, relaxation and resonance ($\mu^+$SR). The $\mu^+$SR measurements revealed three distinct phases as a function of temperature: an…

Spins in strongly frustrated systems are of intense interest due to the emergence of intriguing quantum states including superconductivity and quantum spin liquid. Herein we report the discovery of cascade of phase transitions and large…

Strongly Correlated Electrons · Physics 2024-11-14 Chao Liu , Tieyan Chang , Shilei Wang , Shun Zhou , Xiaoli Wang , Chuanyan Fan , Lu Han , Feiyu Li , Huifen Ren , Shanpeng Wang , Yu-Sheng Chen , Junjie Zhang

We investigate partially disordered antiferromagnetism in CoCl$_2$-2SC(NH$_2$)$_2$, in which a-b plane hexagonal layers are staggered along the c-axis, rather than stacked. A robust 1/3 state forms in applied magnetic fields which the spins…

We report on a study of the electronic and magnetic properties of the triangular antiferromagnetic $\{Cu_3\}$ single-molecule magnet, based on spin density functional theory. Our calculations show that the low-energy magnetic properties are…

Mesoscale and Nanoscale Physics · Physics 2010-08-09 M. Fhokrul Islam , Javier F. Nossa , Carlo M. Canali , Mark Pederson

Sr_2Cu_3O_4Cl_2 is an antiferromagnet consisting of weakly coupled CuO planes which comprise two weakly interacting antiferromagnetic subsystems, I and II, which order at respective temperatures T_I \approx 390K and T_{II} \approx 40K.…

Strongly Correlated Electrons · Physics 2009-10-31 A. B. Harris , A. Aharony , O. Entin-Wohlman , I. Ya. Korenblit , R. J. Birgeneau , Y. J. Kim

Cubic crystal structure and regular octahedral environment of Ir$^{4+}$ render antifluorite-type K$_2$IrCl$_6$ a model fcc antiferromagnet with a combination of Heisenberg and Kitaev exchange interactions. High-resolution synchrotron powder…

Strongly Correlated Electrons · Physics 2019-04-30 Nazir Khan , Danil Prishchenko , Yurii Skourski , Vladimir G. Mazurenko , Alexander A. Tsirlin

Crystal and magnetic structures of a series of novel quantum spin trimer system Ca3Cu3xNix(PO4)4 (x=0,1,2) were studied by neutron powder diffraction at the temperatures 1.5-290 K. The composition with one Ni per trimer (x=1) has a…

Materials Science · Physics 2009-11-13 V. Yu. Pomjakushin , A. Furrer , D. V. Sheptyakov , E. V. Pomjakushina , K. Conder

We have investigated magnetic properties of Rb$_2$Cu$_2$Mo$_3$O$_{12}$ powder. Temperature dependence of magnetic susceptibility and magnetic-field dependence of magnetization have shown that this cuprate is a model compound of a…

Other Condensed Matter · Physics 2009-11-10 Masashi Hase , Haruhiko Kuroe , Kiyoshi Ozawa , Osamu Suzuki , Hideaki Kitazawa , Giyuu Kido , Tomoyuki Sekine

Although (CH3)2NH2CuCl3 (MCCL) was first examined in the 1930's [1], there are open questions regarding the magnetic dimensionality and nature of the magnetic properties. MCCL is proposed to be a S=1/2 alternating ferromagnetic…

Strongly Correlated Electrons · Physics 2009-11-11 M. B. Stone , W. Tian , T. P. Murphy , S. E. Nagler , D. G. Mandrus

We use a variety of series expansion methods at both zero and finite temperature to study an antiferromagnetic Heisenberg spin model proposed recently by Miyahara and Ueda for the quasi two-dimensional material SrCu$_2$(BO$_3$)$_2$. We…

Strongly Correlated Electrons · Physics 2009-10-31 Zheng Weihong , C. J. Hamer , J. Oitmaa

We investigate the magnetic behavior and critical exponents of quaternary CoFeV$_{0.8}$Mn$_{0.2}$Si Heusler alloy to understand the interactions across the Curie temperature ($T_{\rm C}$). The Rietveld refinement of the x-ray diffraction…

Materials Science · Physics 2023-10-04 Guru Dutt Gupt , P. D. Babu , R. S. Dhaka

The electronic structure of diluted (Ga,Mn)As magnetic semiconductors in the presence of As-antisites and magnetic disorder is studied within the framework of the local spin density approximation. Both the chemical and magnetic disorders…

Materials Science · Physics 2007-05-23 J. Kudrnovsky , I. Turek , V. Drchal , J. Masek , F. Maca , P. Weinberger

We synthesized single crystals of the new hexagonal compounds A$_2$Cu$_3$SnF$_{12}$ with A=Cs and Rb, and investigated their magnetic properties. These compounds are composed of Kagom\'{e} layers of corner-sharing CuF$_6$-octahedra.…

Strongly Correlated Electrons · Physics 2009-11-13 T. Ono , K. Morita , M. Yano , H. Tanaka , K. Fujii , H. Uekusa , Y. Narumi , K. Kindo

In the class of materials called spin liquids, a magnetically ordered state cannot be attained even at milliKelvin temperatures because of conflicting constraints on each spin (for e.g. from geometric or exchange frustration). The resulting…

The nature of the magnetic ground state of highly frustrated systems remained puzzling to this day. Here, we have performed multifrequency electron spin resonance (ESR) measurements on a putative quantum spin liquid compound…

The insulating chiral magnet Cu$_2$OSeO$_3$ exhibits a rich array of low-temperature magnetic phenomena, making it a prime candidate for the study of its spin dynamics. Using spin wave small-angle neutron scattering (SWSANS), we…

Strongly Correlated Electrons · Physics 2025-07-21 Victor Ukleev , Priya R. Baral , Robert Cubitt , Nina-Juliane Steinke , Arnaud Magrez , Oleg I. Utesov

We report a comprehensive high-field/high-frequency electron spin resonance (ESR) study on single crystals of the van der Waals magnet CrCl$_3$. This material, although being known for quite a while, has received recent significant…

Materials Science · Physics 2020-06-09 J. Zeisner , K. Mehlawat , A. Alfonsov , M. Roslova , T. Doert , A. Isaeva , B. Büchner , V. Kataev

We study the high-temperature phase diagram of the chiral magnetic insulator Cu$_2$OSeO$_3$ by measuring the spin-Hall magnetoresistance (SMR) in a thin Pt electrode. We find distinct changes in the phase and amplitude of the SMR signal at…

Mesoscale and Nanoscale Physics · Physics 2021-03-24 A. Aqeel , M. Azhar , N. Vlietstra , A. Pozzi , J. Sahliger , H. Huebl , T. T. M. Palstra , C. H. Back , M. Mostovoy

We report here the results of magnetic susceptibility, electrical-resistivity, magnetoresistance (MR), heat-capacity and ^{151}Eu Mossbauer effect measurements on the compound, Eu_2CuSi_3, crystallizing in an AlB_2-derived hexagonal…

Strongly Correlated Electrons · Physics 2009-10-31 Subham Majumdar , R. Mallik , E. V. Sampathkumaran , Kirsten Rupprecht , G. Wortmann

Low temperature specific heat $C(T)$ and zero-field muon spin resonance ($\mu^+$SR) measurements were performed in Gd(hfac)$_3$NITiPr, a quasi one-dimensional molecular magnet with competing nearest neighbor and next-nearest neighbor…

Materials Science · Physics 2009-11-07 A. Lascialfari , R. Ullu , M. Affronte , F. Cinti , A. Caneschi , D. Gatteschi , D. Rovai , M. G. Pini , A. Rettori