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Cs2CuCl4 is known to possess a quantum spin liquid phase with antiferromagnetic interaction below 2.8 K. We report the observation of a new metastable magnetic phase of the triangular frustrated quantum spin system Cs2CuCl4 induced by the…

Strongly Correlated Electrons · Physics 2017-12-18 Hyeong-Jin Kim , C. R. S. Haines , C. Liu , Sae Hwan Chun , Kee Hoon Kim , H. T. Yi , Sang-Wook Cheong , Siddharth S. Saxena

$LiHo_xY_{1-x}F_4$ is an insulating system where the magnetic Ho$^{3+}$ ions have an Ising character, and interact mainly through magnetic dipolar fields. We used the muon spin relaxation technique to study the nature of the ground state…

Strongly Correlated Electrons · Physics 2015-05-14 J. Rodriguez , A. A. Aczel , J. P. Carlo , S. R. Dunsiger , G. J. MacDougall , P. L. Russo , A. T. Savici , Y. J. Uemura , C. R. Wiebe , G. M. Luke

We study the magnetic properties of CaFeTi$_2$O$_6$ (CFTO) by high-field magnetization and specific heat measurements. While the magnetic susceptibility data yield a vanishingly small Curie-Weiss temperature, the magnetic moments are not…

Strongly Correlated Electrons · Physics 2021-05-11 Di Liu , Si Wu , Xuanyu Long , Yao Wang , Hai-Feng Li , Ming Yang , Junfeng Wang , Zheng Liu , Xiang Li , Yuan Wan , Shiliang Li

Unlike conventional magnets where the magnetic moments are partially or completely static in the ground state, in a quantum spin liquid they remain in collective motion down to the lowest temperatures. The importance of this state is that…

Magnetic susceptibility, transport and heat capacity measurements of single crystal NaxCoO2 (x=0.71) are reported. A transition to a spin density wave (SDW) state at Tmag = 22 K is observable in all measurements, except chi(ac) data in…

Strongly Correlated Electrons · Physics 2009-11-10 J. Wooldridge , D. McK Paul , G. Balakrishnan , M. R. Lees

We report proximate quantum spin liquid behavior in K$_2$Co$_2$(SO$_4$)$_3$ with the magnetic Co$^{2+}$ ions embedded on a highly frustrated three-dimensional double trillium lattice. Single-crystal and high-resolution synchrotron powder…

Spin ice materials are the model systems that have a zero-point entropy as \textit{T} $\rightarrow$ 0 K, owing to the frozen disordered states. Here, we chemically alter the well-known spin ice Ho$_{2}$Ti$_{2}$O$_{7}$ by replacing Ti sites…

Strongly Correlated Electrons · Physics 2022-04-20 Sheetal , A. Elghandour , R. Klingeler , C. S. Yadav

We investigate magnetic properties of the $s$ = 1/2 compound K$_{2}$Cu$_{3}$(MoO$_{4}$)$_{4}$ by combining magnetic susceptibility, magnetization, specific heat, and electron spin resonance (ESR) with density functional calculations. Its…

We report gapless quantum spin liquid behavior in the layered triangular Sr$_{3}$CuSb$_{2}$O$_{9}$ (SCSO) system. X-ray diffraction shows superlattice reflections associated with atomic site ordering into triangular Cu planes well-separated…

We present measurements of magnetic field and frequency dependences of the low temperature (T = 1.8 K) AC-susceptibility, and temperature and field dependences of the longitudinal field positive muon spin relaxation ({\mu}SR) for…

Strongly Correlated Electrons · Physics 2015-06-05 R. C. Johnson , B. Z. Malkin , J. S. Lord , S. R. Giblin , A. Amato , C. Baines , A. Lascialfari , B. Barbara , M. J. Graf

The 3d electron spinel compound LiV2O4 exhibits heavy fermion behaviour below 30K which is related to antiferromagnetic spin fluctuations strongly enhanced in an extended region of momentum space. This mechanism explains enhanced…

Strongly Correlated Electrons · Physics 2015-05-19 Victor Yushankhai , Tetsuya Takimoto , Peter Thalmeier

We have investigated the magnetic, dielectric and magnetodielectric (MDE) behavior of a geometrically frustrated spin-chain system, Ca3Co1.4Rh0.6O6, in the single crystalline form for different orientations. The results bring out that the…

Strongly Correlated Electrons · Physics 2015-06-22 Tathamay Basu , Kartik K. Iyer , Kiran Singh , K. Mukherjee , P. L. Paulose , E. V. Sampathkumaran

CuAl2O4 is a normal spinel oxide having quantum spin, S=1/2 for Cu2+. It is a rather unique feature that the Cu2+ ions of CuAl2O4 sit at a tetrahedral position, not like the usual octahedral position for many oxides. At low temperatures, it…

We report on refined experimental results concerning the low-temperature specific heat of the frustrated spin tube material [(CuCl2tachH)3Cl]Cl2. This substance turns out to be an unusually perfect spin tube system which allows to study the…

Strongly Correlated Electrons · Physics 2010-08-30 N. B. Ivanov , J. Schnack , R. Schnalle , J. Richter , P. Koegerler , G. N. Newton , L. Cronin , Y. Oshima , Hiroyuki Nojiri

The results of magnetic susceptibility, electrical resistivity ($\rho$), heat-capacity (C) and thermopower (S) measurements on CeCuAs2, forming in ZrCuSi2-type tetragonal structure, are reported. Our investigations reveal that Ce is…

We report the structural and magnetic properties of a new system LiRhMnO$_{4}$ (LRMO) through x-ray diffraction, bulk magnetization, heat capacity and $^{7}$Li nuclear magnetic resonance (NMR) measurements. LRMO crystallizes in the cubic…

Strongly Correlated Electrons · Physics 2019-03-11 S. Kundu , T. Dey , M. Prinz-Zwick , N. Büttgen , A. V. Mahajan

The magnetic behavior of single-crystal Ho$_2$PdSi$_3$, crystallizing in an AlB$_2$-derived hexagonal structure, is investigated by magnetic susceptibility ($\chi$) and electrical resistivity ($\rho$) measurements along two directions.…

Strongly Correlated Electrons · Physics 2009-11-07 E. V. Sampathkumaran , H. Bitterlich , K. K. Iyer , W. Löser , G. Behr

Spinel-structured compounds serve as prototypical examples of highly frustrated systems, and are promising candidates for realizing the long-sought quantum spin liquid (QSL) state. However, structural disorder is inevitable in many real QSL…

We report the bulk magnetic properties of a yet unexplored vanadium-based multivalued spinel system, Zn3V3O8. A Curie-Weiss fit of our dc magnetic susceptibility data in the temperature region from 140 to 300 K yields a Curie constant C =…

Strongly Correlated Electrons · Physics 2015-06-22 Tanmoy Chakrabarty , Avinash V. Mahajan , Susanta Kundu

The frustrated magnet $\alpha$-RuCl$_3$ constitutes a fascinating quantum material platform that harbors the intriguing Kitaev physics. However, a consensus on its intricate spin interactions and field-induced quantum phases has not been…

Strongly Correlated Electrons · Physics 2021-07-16 Han Li , Hao-Kai Zhang , Jiucai Wang , Han-Qing Wu , Yuan Gao , Dai-Wei Qu , Zheng-Xin Liu , Shou-Shu Gong , Wei Li