Conductive surface states and Kondo exhaustion in insulating YbIr3 Si7

Macy Stavinoha; C. L. Huang; W. Adam Phelan; Alannah M. Hallas; V. Loganathan; M. Michiardi; J. Falke; Sergey Zhdanovich; D. Takegami; C. E. Liu; K. D. Tsuei; C. T. Chen; Long Qian; Nicholas J. Ng; Jeffrey W. Lynn; Qingzhen Huang; Franziska Weickert; Vivien Zapf; Katharine R. Larsen; Patricia D. Sparks; James C. Eckert; Anand B. Puthirath; Hsiang Hsi Kung; Tor M. Pedersen; Sergey Gorovikov; A. Damascelli; L. H. Tjeng; C. Hooley; Andriy H. Nevidomskyy; E. Morosan

doi:10.1103/PhysRevB.109.035112

Conductive surface states and Kondo exhaustion in insulating YbIr3 Si7

Macy Stavinoha, C. L. Huang, W. Adam Phelan, Alannah M. Hallas, V. Loganathan, M. Michiardi, J. Falke, Sergey Zhdanovich, D. Takegami, C. E. Liu, K. D. Tsuei, C. T. Chen, Long Qian, Nicholas J. Ng, Jeffrey W. Lynn, Qingzhen Huang, Franziska Weickert, Vivien Zapf, Katharine R. Larsen, Patricia D. SparksJames C. Eckert, Anand B. Puthirath, Hsiang Hsi Kung, Tor M. Pedersen, Sergey Gorovikov, A. Damascelli, L. H. Tjeng, C. Hooley, Andriy H. Nevidomskyy, E. Morosan

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The interplay of Kondo screening and magnetic ordering in strongly correlated materials containing local moments is a subtle problem. Usually the number of conduction electrons per unit cell matches or exceeds the number of moments, and a Kondo-screened heavy Fermi liquid develops at low temperatures. Changing the pressure, magnetic field, or chemical doping can displace this heavy Fermi liquid in favor of a magnetically ordered state. Alternatively, Kondo singlet formation can be suppressed when the number of conduction electrons is small compared to the number of magnetic moments, known as the Kondo exhaustion scenario. Here we report the discovery of such an "exhausted"Kondo lattice material, YbIr3Si7, where the bulk electrical conductivity tends to zero in the antiferromagnetic state below the Néel temperature TN=4.1K, as all the free carriers are consumed in the formation of Kondo singlets. By contrast, the surface is conducting, as the Yb3+ ions relax into larger nonmagnetic Yb2+ in the presence of reduced chemical pressure, which shifts the chemical potential.

Original language	English
Article number	035112
Journal	Physical Review B
Volume	109
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.109.035112
Publication status	Published - 2024 Jan 15

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.109.035112

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Stavinoha, M., Huang, C. L., Phelan, W. A., Hallas, A. M., Loganathan, V., Michiardi, M., Falke, J., Zhdanovich, S., Takegami, D., Liu, C. E., Tsuei, K. D., Chen, C. T., Qian, L., Ng, N. J., Lynn, J. W., Huang, Q., Weickert, F., Zapf, V., Larsen, K. R., ... Morosan, E. (2024). Conductive surface states and Kondo exhaustion in insulating YbIr3 Si7. Physical Review B, 109(3), Article 035112. https://doi.org/10.1103/PhysRevB.109.035112

@article{40097b3f934f4b9db9aa60d2b6b31daf,

title = "Conductive surface states and Kondo exhaustion in insulating YbIr3 Si7",

abstract = "The interplay of Kondo screening and magnetic ordering in strongly correlated materials containing local moments is a subtle problem. Usually the number of conduction electrons per unit cell matches or exceeds the number of moments, and a Kondo-screened heavy Fermi liquid develops at low temperatures. Changing the pressure, magnetic field, or chemical doping can displace this heavy Fermi liquid in favor of a magnetically ordered state. Alternatively, Kondo singlet formation can be suppressed when the number of conduction electrons is small compared to the number of magnetic moments, known as the Kondo exhaustion scenario. Here we report the discovery of such an {"}exhausted{"}Kondo lattice material, YbIr3Si7, where the bulk electrical conductivity tends to zero in the antiferromagnetic state below the N{\'e}el temperature TN=4.1K, as all the free carriers are consumed in the formation of Kondo singlets. By contrast, the surface is conducting, as the Yb3+ ions relax into larger nonmagnetic Yb2+ in the presence of reduced chemical pressure, which shifts the chemical potential.",

author = "Macy Stavinoha and Huang, {C. L.} and Phelan, {W. Adam} and Hallas, {Alannah M.} and V. Loganathan and M. Michiardi and J. Falke and Sergey Zhdanovich and D. Takegami and Liu, {C. E.} and Tsuei, {K. D.} and Chen, {C. T.} and Long Qian and Ng, {Nicholas J.} and Lynn, {Jeffrey W.} and Qingzhen Huang and Franziska Weickert and Vivien Zapf and Larsen, {Katharine R.} and Sparks, {Patricia D.} and Eckert, {James C.} and Puthirath, {Anand B.} and Kung, {Hsiang Hsi} and Pedersen, {Tor M.} and Sergey Gorovikov and A. Damascelli and Tjeng, {L. H.} and C. Hooley and Nevidomskyy, {Andriy H.} and E. Morosan",

note = "Publisher Copyright: {\textcopyright} 2024 American Physical Society. ",

year = "2024",

month = jan,

day = "15",

doi = "10.1103/PhysRevB.109.035112",

language = "English",

volume = "109",

journal = "Physical Review B",

issn = "2469-9950",

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Stavinoha, M, Huang, CL, Phelan, WA, Hallas, AM, Loganathan, V, Michiardi, M, Falke, J, Zhdanovich, S, Takegami, D, Liu, CE, Tsuei, KD, Chen, CT, Qian, L, Ng, NJ, Lynn, JW, Huang, Q, Weickert, F, Zapf, V, Larsen, KR, Sparks, PD, Eckert, JC, Puthirath, AB, Kung, HH, Pedersen, TM, Gorovikov, S, Damascelli, A, Tjeng, LH, Hooley, C, Nevidomskyy, AH & Morosan, E 2024, 'Conductive surface states and Kondo exhaustion in insulating YbIr3 Si7', Physical Review B, vol. 109, no. 3, 035112. https://doi.org/10.1103/PhysRevB.109.035112

TY - JOUR

T1 - Conductive surface states and Kondo exhaustion in insulating YbIr3 Si7

AU - Stavinoha, Macy

AU - Huang, C. L.

AU - Phelan, W. Adam

AU - Hallas, Alannah M.

AU - Loganathan, V.

AU - Michiardi, M.

AU - Falke, J.

AU - Zhdanovich, Sergey

AU - Takegami, D.

AU - Liu, C. E.

AU - Tsuei, K. D.

AU - Chen, C. T.

AU - Qian, Long

AU - Ng, Nicholas J.

AU - Lynn, Jeffrey W.

AU - Huang, Qingzhen

AU - Weickert, Franziska

AU - Zapf, Vivien

AU - Larsen, Katharine R.

AU - Sparks, Patricia D.

AU - Eckert, James C.

AU - Puthirath, Anand B.

AU - Kung, Hsiang Hsi

AU - Pedersen, Tor M.

AU - Gorovikov, Sergey

AU - Damascelli, A.

AU - Tjeng, L. H.

AU - Hooley, C.

AU - Nevidomskyy, Andriy H.

AU - Morosan, E.

PY - 2024/1/15

Y1 - 2024/1/15

N2 - The interplay of Kondo screening and magnetic ordering in strongly correlated materials containing local moments is a subtle problem. Usually the number of conduction electrons per unit cell matches or exceeds the number of moments, and a Kondo-screened heavy Fermi liquid develops at low temperatures. Changing the pressure, magnetic field, or chemical doping can displace this heavy Fermi liquid in favor of a magnetically ordered state. Alternatively, Kondo singlet formation can be suppressed when the number of conduction electrons is small compared to the number of magnetic moments, known as the Kondo exhaustion scenario. Here we report the discovery of such an "exhausted"Kondo lattice material, YbIr3Si7, where the bulk electrical conductivity tends to zero in the antiferromagnetic state below the Néel temperature TN=4.1K, as all the free carriers are consumed in the formation of Kondo singlets. By contrast, the surface is conducting, as the Yb3+ ions relax into larger nonmagnetic Yb2+ in the presence of reduced chemical pressure, which shifts the chemical potential.

AB - The interplay of Kondo screening and magnetic ordering in strongly correlated materials containing local moments is a subtle problem. Usually the number of conduction electrons per unit cell matches or exceeds the number of moments, and a Kondo-screened heavy Fermi liquid develops at low temperatures. Changing the pressure, magnetic field, or chemical doping can displace this heavy Fermi liquid in favor of a magnetically ordered state. Alternatively, Kondo singlet formation can be suppressed when the number of conduction electrons is small compared to the number of magnetic moments, known as the Kondo exhaustion scenario. Here we report the discovery of such an "exhausted"Kondo lattice material, YbIr3Si7, where the bulk electrical conductivity tends to zero in the antiferromagnetic state below the Néel temperature TN=4.1K, as all the free carriers are consumed in the formation of Kondo singlets. By contrast, the surface is conducting, as the Yb3+ ions relax into larger nonmagnetic Yb2+ in the presence of reduced chemical pressure, which shifts the chemical potential.

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U2 - 10.1103/PhysRevB.109.035112

DO - 10.1103/PhysRevB.109.035112

M3 - Article

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VL - 109

JO - Physical Review B

JF - Physical Review B

IS - 3

M1 - 035112

ER -

Conductive surface states and Kondo exhaustion in insulating YbIr3 Si7

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