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相关论文: Synthesis and physical properties of CeRu$_2$As$_2…

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We investigate the electronic structure of a novel Kondo lattice system CeCuX2 (X = As/Sb) employing high resolution depth-resolved photoemission spectroscopy of high quality single crystalline materials. CeCuSb2 and CeCuAs2 represent…

In this study we report the results of study of novel ternary $Np_2PtGa_3$ compound. The x-ray-powder diffraction analysis reveals that the compound crystallizes in the orthorhombic CeCu$_2$-type crystal structure (space group Imma) with…

强关联电子 · 物理学 2014-12-08 V. H. Tran , J. -C. Griveau , R. Eloirdi , E. Colineau

Thermodynamic and transport properties of the La-diluted Kondo lattice CeNi2Ge2 were studied in a wide temperature range. The Ce-rich alloys Ce1-xLaxNi2Ge2 were found to exhibit distinct features of the coherent heavy Fermi liquid. At…

A technique for measuring the electrical resistivity and absolute thermopower is presented for pressures up to 30 GPa, temperatures down to 25 mK and magnetic fields up to 10 T. With the examples of CeCu2Ge2 and CeCu2Si2 we focus on the…

强关联电子 · 物理学 2007-05-23 D. Jaccard , E. Vargoz , K. Alami-Yadri , H. Wilhelm

The easily tuned balance among competing interactions in Kondo-lattice metals allows access to a zero-temperature, continuous transition between magnetically ordered and disordered phases, a quantum-critical point (QCP). Indeed, these…

强关联电子 · 物理学 2015-10-23 Yongkang Luo , F. Ronning , N. Wakeham , Xin Lu , Tuson Park , Zhu-an Xu , J. D. Thompson

Systematic investigations of rare-earth ($R$) based intermetallic materials are a leading strategy to reveal the underlying mechanisms governing a range of physical phenomena, such as the formation of a Kondo lattice and competing…

Results are reported for the $f$-electron intermetallic CeAuAl$_4$Ge$_2$, where the atomic arrangement of the cerium ions creates the conditions for geometric frustration. Despite this, magnetic susceptibility measurements reveal that the…

材料科学 · 物理学 2017-10-04 S. Zhang , N. Aryal , K. Huang , K. -W. Chen , Y. Lai , D. Graf , T. Besara , T. Siegrist , E. Manousakis , R. E. Baumbach

We report on magneto-transport properties of the Kondo semiconducting compound CeRu$_2$Al$_{10}$, focusing on its exotic phase below $T_0$ = 27 K. In this phase, an excess thermal conductivity $\kappa$ emerges and is gradually suppressed by…

强关联电子 · 物理学 2016-12-14 Jiahao Zhang , Sile Hu , Hengcan Zhao , Pu Wang , A. M. Strydom , Jianlin Luo , Frank Steglich , Peijie Sun

Nozi$\grave{e}$res' exhaustion theory argues the temperature for coherently screening of all local moments in Kondo lattice could be much lower than the temperature of single moment screening with insufficient number of conduction…

强关联电子 · 物理学 2024-09-25 Peng Zhang , Bo Liu , Shengli Zhang , K. Haule , Jianhui Dai

Inelastic neutron scattering experiments have been carried out to determine the crystal field states of the Kondo lattice heavy fermions CeRuSn3 and CeRhSn3. Both the compounds crystallize in LaRuSn3-type cubic structure (space group Pm-3n)…

强关联电子 · 物理学 2016-08-24 V. K. Anand , D. T. Adroja , D. Britz , A. M. Strydom , J. W. Taylor , W. Kockelmann

CeRh$_2$As$_2$ is a new multiphase superconductor with strong suggestions for an additional itinerant multipolar ordered phase. The modeling of the low temperature properties of this heavy fermion compound requires a quartet Ce$^{3+}$…

Heavy fermions represent an archetypal example of strongly correlated electron systems which, due to entanglement among different interactions, often exhibit exotic and fascinating physics involving Kondo screening, magnetism and…

强关联电子 · 物理学 2018-05-16 W. Zhou , C. Q. Xu , B. Li , R. Sankar , F. M. Zhang , B. Qian , C. Cao , J. H. Dai , Jianming Lu , Xiaofeng Xu

We report systematic studies of CeCu$_9$In$_2$, which appears to be a new Kondo lattice system. Electrical resistivity exhibits a logarithmic law characteristic of Kondo systems with a broad maximum at $T_{coh}\approx$45 K and it obeys the…

强关联电子 · 物理学 2020-03-13 R. Kurleto , A. Szytuła , J. Goraus , S. Baran , Yu. Tyvanchuk , Ya. M. Kalychak , P. Starowicz

The symbiosis of strong interactions, flat bands, topology and symmetry has led to the discovery of exotic phases of matter, including fractional Chern insulators, correlated moir\'e topological superconductors, and Dirac and Weyl…

A cerium containing pnictide, CeNiAsO, crystallized in the ZrCuSiAs type structure, has been investigated by measuring transport and magnetic properties, as well as specific heat. We found that CeNiAsO is an antiferromagnetic dense Kondo…

强关联电子 · 物理学 2015-05-27 Yongkang Luo , Han Han , Hao Tan , Xiao Lin , Yuke Li , Shuai Jiang , Chunmu Feng , Jianhui Dai , Guanghan Cao , Zhu'an Xu , Shiyan Li

We report a study of the structural, magnetic, transport, and thermodynamic properties of polycrystalline samples of CeRhC$_2$. CeRhC$_2$ crystallizes in a tetragonal structure with space group $P4_1$ and it orders antiferromagnetically…

The heavy-fermion superconductor CeCu$_{2}$Si$_{2}$ exhibits two-band, $d$-wave superconductivity with a finite energy gap over the whole Fermi surface around the magnetic instability where 4$f$ antiferrerromagnetic order is suppressed. In…

超导电性 · 物理学 2023-06-21 Z. Y. Shan , M. Smidman , O. Stockert , Y. Liu , H. Q. Yuan , P. J. Sun , S. Wirth , E. Schuberth , F. Steglich

Despite intense research in the field of strongly correlated electron behavior for the past few decades, there has been very little effort to understand this phenomenon in nano particles of the Kondo lattices. In this article, we review the…

强关联电子 · 物理学 2015-05-27 E. V. Sampathkumaran , K. Mukherjee , Kartik K Iyer , Niharika Mohapatra , Sitikantha D Das

The recently proposed novel materials class called Weyl-Kondo semimetal (WKSM) is a time reversal invariant but inversion symmetry broken Kondo semimetal in which Weyl nodes are pushed to the Fermi level by the Kondo interaction. Here we…

Here we report the structural and electronic properties of CeAu$_{2}$Bi, a new heavy-fermion compound crystallizing in a nonsymmorphic hexagonal structure ($P63/mmc$). The Ce$^{3+}$ ions form a triangular lattice which orders…

强关联电子 · 物理学 2019-07-25 M. M. Piva , W. Zhu , F. Ronning , J. D. Thompson , P. G. Pagliuso , P. F. S. Rosa