Kondo behavior and metamagnetic phase transition in the heavy-fermion compound 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="bold">CeBi</mml:mi><mml:mn mathvariant="bold">2</mml:mn></mml:msub></mml:math>

Zhou, Wei; Xu, Chunqiang; Li, Bin; Sankar, Raman; Zhang, F. M.; Qian, Bin; Cao, Chao; Dai, Jianhui; Lü, Jianming; Jiang, Wenxiang; Qian, Dong; Xu, Xiaofeng

doi:10.1103/physrevb.97.195120

Cited by 10 publications

(7 citation statements)

References 29 publications

(34 reference statements)

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“…[65] The scaling behavior confirms the Kondo effect and has been observed in many Kondo lattices. [12,50,66] However, the best scaling of our data yields a negative T * = −6 K. This sign is consistent with the positive CW temperature. Both the positive CW temperature and the negative T * indicate the presence of ferromagnetic correlations.…”

Section: Electrical Resistivitysupporting

confidence: 89%

Intercalation of van der Waals layered materials: A route towards engineering of electron correlation*

Niu

Zhang

et al. 2020

Chinese Phys. B

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Being parent materials of two-dimensional (2D) crystals, van der Waals layered materials have received revived interest. In most 2D materials, the interaction between electrons is negligible. Introducing the interaction can give rise to a variety of exotic properties. Here, via intercalating a van der Waals layered compound VS2, we find evidence for electron correlation by extensive magnetic, thermal, electrical, and thermoelectric characterizations. The low temperature Sommerfeld coefficient is 64 mJ⋅K−2⋅mol−1 and the Kadowaki–Woods ratio r KW ∼ 0.20a 0. Both supports an enhancement of the electron correlation. The temperature dependences of the resistivity and thermopower indicate an important role played by the Kondo effect. The Kondo temperature T K is estimated to be around 8 K. Our results suggest intercalation as a potential means to engineer the electron correlation in van der Waals materials, as well as 2D materials.

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Section: Electrical Resistivitysupporting

confidence: 89%

Intercalation of van der Waals layered materials: A route towards engineering of electron correlation*

Niu

Zhang

et al. 2020

Chinese Phys. B

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“…As we move to the low-temperature region (inset to Fig. 1), for p ≤ 1.23 GPa, the kink-like anomaly, which is associated with the magnetic transition 12,20 , is shifted to higher temperatures upon increasing pressure. Even with this slight increase in T N , the loss of spin disorder scattering below T N remains fundamentally the same.…”

Section: Resultsmentioning

confidence: 92%

“…In an earlier work, it was suggested that this drop in R(T ) is associated with either the coherence in Kondo scattering or crystal electric-field (CEF) splitting of Ce atoms 20 . At T ∼ 3.3 K, the resistance shows a kink-like anomaly due to loss of spindisorder scattering as CeBi 2 undergoes an AFM transition at T N 12,20 . Sample S2 was measured under pressure and at lowest pressure (0.12 GPa), resistance of S2 shows very similar feature as S1.…”

Section: A Cebi2mentioning

confidence: 99%

“…Among these, the RBi 2 family displays different magnetic ground states depending on the choice of R 12 . Structurally, RBi 2 forms in an orthorhombic structure with single layers of Bi separated from each other by RBi bilayers that are stacked along the crystallographic b axis 12,20 . When R is chosen to be the moment-bearing Ce ion, an antiferromagnetic (AFM) ground state below T N ∼ 3.3 K can be stabilized 12 .…”

Section: Introductionmentioning

confidence: 99%

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Physical properties of RBi2 (R=La,Ce) under pressure

Gati

Neilson

et al. 2019

Phys. Rev. Materials

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We present a study of electrical transport properties of RBi2 (R = La, Ce) under hydrostatic pressure up to ∼ 2.5 GPa. These measurements are complemented by thermodynamic measurements of the specific heat on CeBi2 at different pressures up to 2.55 GPa. For CeBi2, we find a moderate increase of the antiferromagnetic transition, TN, from 3.3 K to 4.4 K by pressures up to 2.55 GPa. Notably, resistance measurements for both CeBi2 and LaBi2 show signatures of superconductivity for pressures above ∼ 1.7 GPa. However, the absence of superconducting feature in specific heat measurements for CeBi2 indicates that superconductivity in CeBi2 (and most likely LaBi2 as well) is not bulk and likely originates from traces of Bi flux, either on the surface of the plate-like samples, or trapped inside the sample as laminar inclusions. arXiv:1907.08645v1 [cond-mat.str-el]

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“…The evolution of this feature will be analyzed and discussed in more details below. As we move to the low-temperature region (inset to Fig.6.1), for p ≤ 1.23 GPa, the kink-like anomaly, which is associated with the magnetic transitionPetrovic et al(2002);Zhou et al (2018), is shifted to higher temperatures upon increasing pressure. Even with this slight increase in T N , the loss of spin disorder scattering below T N remains fundamentally the same.…”

mentioning

confidence: 79%

Pressure tuning of correlated electron systems

Li¹

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State University, big steps are also achieved with my life, getting married to my beloved wife and have a beatiful son. I feel very lucky that I have shared part of my life journey with friends, families and especially the Canfield's Army in Ames. I am so grateful for the support and company.Approaching graduation, I would like to take this opportunity to express my thanks to those who helped me with various aspects of conducting research, writing of this thesis as well as my life during my journey in Ames.First of all, I would like to express my sincere and greatest thanks to to my advisors, Dr. Paul C. Canfield and Dr. Sergey L. Bud'ko (with the "L." still being a mystery to me) for their extreme patience, guidance and support throughout my Ph.D. research. Their care also helped me through some struggling times. When I first met Dr. Canfield as a first year graduate student, I was immediately attracted by his passion and his way of making research understandable to beginners or outsiders. During my research in his group, he has kept inspired me with the passion in science as well as broad and deep knowledge. I would like to thank Dr. Bud'ko for his enormous guidance and support with various research instruments, especially the pressure devices. The discussions with him are always insightful and his skepticism has pushed me further in understanding the physics.

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Kondo behavior and metamagnetic phase transition in the heavy-fermion compound CeBi2

Cited by 10 publications

References 29 publications

Intercalation of van der Waals layered materials: A route towards engineering of electron correlation*

Intercalation of van der Waals layered materials: A route towards engineering of electron correlation*

Physical properties of RBi2 (R=La,Ce) under pressure

Pressure tuning of correlated electron systems

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