1D charge density wave in the hidden order state of URu2Si2

Herrera, Edwin; Barrena, Víctor; Guillamón, Isabel; Galvis, J. A.; Herrera, William J.; Castilla, J. M.; Aoki, Dai; Flouquet, J.; Suderow, Hermann

doi:10.1038/s42005-021-00598-0

Cited by 2 publications

(2 citation statements)

References 51 publications

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“…[5][6][7][8][9][10][11][12][13] First, 2D electronic states confined by closed geometries at the nanometer scale can lead to quantized energy levels. [14] Enhancement of the density of electron states per unit X. Ning, Y. Dong, W. Jian, J. Wang, W. Guo, S. Wang Hebei Key Lab of Optic-electronic Information and Materials The College of Physics Science and Technology Hebei University Baoding 071002, P. R. China E-mail: xkning@alum.imr.ac.cn; sfwang@hbu.edu.cn…”

Section: Introductionmentioning

confidence: 99%

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Record High Power Factor and Low Thermal Conductivity in Amorphous/PbTe/Amorphous Multiple Quantum Wells

Ning

Dong

Jian

et al. 2023

Adv Funct Materials

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Quantum well (QW) superlattice is one of the proposals to improve the thermoelectric properties and provide a rich platform for the next generation of thermoelectric device. Previous QW have two main challenges that need to be addressed: i) decrease the electron tunneling across the layers in the semiconductor‐based multiple QWs (MQW), and ii) decrease the thermal conductivity in the oxide‐based MQW. Herein, the study demonstrates amorphous based PbTe/amorphous‐STO MQWs with ultrahigh power factor of 40.9 µW cm−1 K−2 and record low thermal conductivity of ≈0.49 W m−1 K−1 at room temperature. The high performance of PbTe/amorphous‐STO MQWs is attributed to strong quantum confine effect and its intrinsic low thermal conductivity of amorphous superlattice structure. The results open up a new avenue toward modulating thermoelectric properties beyond traditional MQWs of thermoelectric materials.

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Section: Introductionmentioning

confidence: 99%

“…[ 5–13 ] First, 2D electronic states confined by closed geometries at the nanometer scale can lead to quantized energy levels. [ 14 ] Enhancement of the density of electron states per unit volume occurs for a small well width. Under this circumstance, S rapidly increased as the kinetic energy increased per carrier.…”

Section: Introductionmentioning

confidence: 99%

Record High Power Factor and Low Thermal Conductivity in Amorphous/PbTe/Amorphous Multiple Quantum Wells

Ning

Dong

Jian

et al. 2023

Adv Funct Materials

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show abstract

Millikelvin scanning tunneling microscope at 20/22 T with a graphite enabled stick–slip approach and an energy resolution below 8 μeV: Application to conductance quantization at 20 T in single atom point contacts of Al and Au and to the charge density wave of 2H–NbSe2

Fernández-Lomana

Martín-Vega

et al. 2021

Review of Scientific Instruments

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We describe a scanning tunneling microscope (STM) that operates at magnetic fields up to 22 T and temperatures down to 80 mK. We discuss the design of the STM head, with an improved coarse approach, the vibration isolation system, and efforts to improve the energy resolution using compact filters for multiple lines. We measure the superconducting gap and Josephson effect in aluminum and show that we can resolve features in the density of states as small as 8 μeV. We measure the quantization of conductance in atomic size contacts and make atomic resolution and density of states images in the layered material 2H–NbSe2. The latter experiments are performed by continuously operating the STM at magnetic fields of 20 T in periods of several days without interruption.

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1D charge density wave in the hidden order state of URu2Si2

Cited by 2 publications

References 51 publications

Record High Power Factor and Low Thermal Conductivity in Amorphous/PbTe/Amorphous Multiple Quantum Wells

Record High Power Factor and Low Thermal Conductivity in Amorphous/PbTe/Amorphous Multiple Quantum Wells

Millikelvin scanning tunneling microscope at 20/22 T with a graphite enabled stick–slip approach and an energy resolution below 8 μeV: Application to conductance quantization at 20 T in single atom point contacts of Al and Au and to the charge density wave of 2H–NbSe2

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