wovepaper — the arXiv observatory

papers

Publications (36)

cond-mat.mes-hall2004

Modulation of Noise in Submicron GaAs/AlGaAs Hall Devices by Gating

Yongqing Li, Cong Ren, Peng Xiong +3

We present a systematic characterization of fluctuations in submicron Hall devices based on GaAs/AlGaAs two-dimensional electron gas heterostructures at temperatures between 1.5 K…

cond-mat.supr-con2008

Angular dependence of resistivity in the superconducting state of NdFeAsO $_{0.82}$ F $_{0.18}$ single crystals

Ying Jia, Peng Cheng, Lei Fang +5

We report the results of angle dependent resistivity of NdFeAsO $_{0.82}$ F $_{0.18}$ single crystals in the superconducting state. By doing the scaling of resistivity within the fram…

cond-mat.mtrl-sci2007

Measurement of the spin polarization of the magnetic semiconductor EuS with zero-field and Zeeman-split Andreev reflection spectroscopy

Cong Ren, J. Trbovic, R. L. Kallaher +4

We report measurements of the spin polarization (\textbf{\textit{P}}) of the concentrated magnetic semiconductor EuS using both zero-field and Zeeman-split Andreev reflection spect…

cond-mat.supr-con2008

Nodal Gap in Fe-Based Layered Superconductor LaO_0.9F_{0.1-delta}FeAs Probed by Specific Heat Measurements

Gang Mu, Xiyu Zhu, Lei Fang +3

We report the specific heat measurements on the newly discovered Fe-based layered superconductor LaO_0.9F_{0.1-delta}FeAs with the onset transition temperature T_c \approx 28 K. A…

cond-mat.supr-con2011

Transport properties and asymmetric scattering in Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ single crystals compared to the electron doped counterparts Ba(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$ }

Bing Shen, Huan Yang, Zhao-Sheng Wang +5

Resistivity, Hall effect and magnetoresistance have been investigated systematically on single crystals of Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ ranging from undoped to optimally doped regio…

cond-mat.supr-con2008

Point-Contact Spectroscopy of Iron-Based Layered Superconductor LaO $_{0.9}$ F $_{0.1 - I^´}$ FeAs

Lei Shan, Yonglei Wang, Xiyu Zhu +4

We present point-contact spectroscopy data for junctions between a normal metal and the newly discovered F-doped superconductor LaO $_{0.9}$ F $_{0.1 - I^´}$ FeAs (F-LaOFeAs). A zero-bias…

cond-mat.supr-con2025

Absence of Andreev Bound States in Noncentrosymmetric Superconductor PbTaSe $_{2}$ under Hydrostatic Pressures

Yu-qing Zhao, Zhi-fan Wu, Hai-yan Zuo +8

Noncentrosymmetric superconductor PbTaSe $_{2}$ , hosting bulk nodal-line fermions (Phys. Rev. B. 89, 020505) and spin-helical surface states (Nature Communication 7, 10556), represent…

cond-mat.supr-con2008

Upper critical field, anisotropy, and superconducting properties of Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ single crystals

Zhao-Sheng Wang, Hui-Qian Luo, Cong Ren +1

The temperature dependent resistivity of Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ (x = 0.23, 0.25, 0.28 and 0.4) single crystals and the angle dependent resistivity of superconducting Ba$_{0.6}…

cond-mat.supr-con2021

Topological Surface Superconductivity Induced by Hydrostatic Pressure-Enhanced Antisymmetric Spin-Orbit Coupling in Non-Centrosymmetric Superconductor PbTaSe2

Cong Ren, Hai Zi, Yu-jia Long +10

A notable characteristic of PbTaSe $_{2}$ , a prototypical noncentrosymmetric (NCS) superconductor, is that its superconductivity can be modulated through a structural transition under…

cond-mat.supr-con2009

Flux dynamics and vortex phase diagram in $B a (F e_{1 - x} C o_{x})_{2} A s_{2}$ single crystals revealed by magnetization and its relaxation

Bing Shen, Peng Cheng, Zhaosheng Wang +4

Magnetization and its relaxation have been measured in $B a (F e_{1 - x} C o_{x})_{2} A s_{2}$ single crystals at various doping levels ranging fromvery underdoped to very overdoped regimes. Siza…

cond-mat.supr-con2009

Specific-Heat Measurement of Residual Superconductivity in the Normal State of Underdoped Cuprate Superconductors

Hai-Hu Wen, Gang Mu, Huiqian Luo +6

We have measured the magnetic field and temperature dependence of specific heat on $B i_{2} S r_{2 - x} L a_{x} C u O_{6 + I^´}$ single crystals in wide doping and temperature regions. The supercon…

cond-mat.supr-con2008

Fully Gapped Superconducting State Based on a High Normal State Quasiparticle Density of States in Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ Single Crystals

Gang Mu, Huiqian Luo, Zhaosheng Wang +3

We report the specific heat (SH) measurements on single crystals of hole doped $F e A s$ -based superconductor $B a_{0.6} K_{0.4} F e_{2} A s_{2}$ . It is found that the electronic SH coefficient…

cond-mat.mes-hall2015

Evidence for Half-Metallicity in n-type HgCr2Se4

Tong Guan, Chaojing Lin, Chongli Yang +8

High quality HgCr $_{2}$ Se $_{4}$ single crystals have been investigated by magnetization, electron transport and Andreev reflection spectroscopy. In the ferromagnetic ground state, the…

cond-mat.supr-con2011

Gap Anisotropy in Iron-Based Superconductors: A Point-Contact Andreev Reflection Study of BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$ Single Crystals

Cong Ren, Zhao-Sheng Wang, Zhen-Yu Wang +7

We report a systematic investigation on c-axis point-contact Andreev reflection (PCAR) in BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$ superconducting single crystals from underdoped to overdoped regi…

astro-ph.EP2026

Interstellar Object 3I/ATLAS Observed from Mars by China's Tianwen-1 Spacecraft

Xin Ren, Wei Yan, Ruining Zhao +20

China's Tianwen-1 Mars orbiter successfully imaged the third interstellar object, 3I/ATLAS, during its close encounter with Mars using the onboard HiRIC CMOS camera. This is China'…

cond-mat.supr-con2009

Superconductivity and phase diagrams in 4d- and 5d-metal-doped iron arsenides SrFe_{2-x}M_xAs_2 (M = Rh, Ir, Pd)

Fei Han, Xiyu Zhu, Peng Cheng +10

By substituting the Fe with the 4d and 5d-transition metals Rh, Ir and Pd in SrFe_2As_2, we have successfully synthesized a series of superconductors SrFe_{2-x}M_xAs_2 (M = Rh, Ir…

cond-mat.supr-con2012

Vortex images on Ba{1-x}KxFe2As2 observed directly by the magnetic force microscopy

Huan Yang, Bing Shen, Zhenyu Wang +3

The vortex states on optimally doped Ba0.6K0.4Fe2As2 and underdoped Ba0.77K0.23Fe2As2 single crystals are imaged by magnetic force microscopy at various magnetic fields below 100 O…

cond-mat.supr-con2008

Critical Fields and Anisotropy of NdO0.82F0.18FeAs Single Crystals

Ying Jia, Peng Cheng, Lei Fang +6

The newly discovered iron-based superconductors have stimulated enormous interests in the field of superconductivity. Since the new superconductor is a layered system, the anisotro…

cond-mat.supr-con2009

Role of multiband effects and electron-hole asymmetry in the superconductivity and normal state properties of Ba(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$

Lei Fang, Huiqian Luo, Peng Cheng +8

We report a systematic investigation, together with a theoretical analysis, of the resistivity and Hall effect in single crystals of Ba(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$ , over a wi…

cond-mat.supr-con2009

Impurity Scattering Effect on Superconductivity and the Violation of Anderson Theorem in Ba(Fe_{1-x}Co_x)_2As_2 Single Crystals

Gang Mu, Bin Zeng, Peng Cheng +6

Low-temperature specific heat (SH) and resistivity were measured on Ba(Fe_{1-x}Co_x)_2As_2 single crystals in wide doping region. A sizeable residual specific heat coefficient Î³_0…

cond-mat.supr-con2008

Physical properties of noncentrosymmetric superconductor Ru $_{7}$ B $_{3}$

Lei Fang, Huan Yang, Xiyu Zhu +5

Transition metal boride Ru $_{7}$ B $_{3}$ was found to be a noncentrosymmetric superconductor with $T_{C}$ equal to 3.3 K. Superconducting and normal state properties of Ru $_{7}$ B $_{3}$ were…

cond-mat.supr-con2016

Electronic specific heat in BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$

Dongliang Gong, Tao Xie, Xingye Lu +7

We have systematically studied the low-temperature specific heat of the BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$ single crystals covering the whole superconducting dome. Using the nonsuperconducti…

cond-mat.supr-con2011

Multiple Magnetization Peaks and New Type of Vortex Phase Transitions in Ba0.6K0.4Fe2As2

Bing Shen, Huan Yang, Bin Zeng +3

Magnetization and its relaxation have been measured on Ba0.6K0.4Fe2As2 single crystals with Tc = 39 K. The magnetization hysteresis loops (MHLs) exhibit flux jumps in the low tempe…

cond-mat.supr-con2010

Observation of Lattice and Andreev Bound States of Vortices in Ba0.6K0.4Fe2As2 Single Crystals with Scanning Tunneling Microscopy/Spectroscopy

Lei Shan, Yong-Lei Wang, Bing Shen +9

For a type-II superconductor, when the applied magnetic field is higher than the lower critical value Hc1, the magnetic flux will penetrate into the superconductor and form quantiz…

cond-mat.supr-con2008

Linear Temperature Dependence of the Lower Critical Field $H_{c 1}$ in F-Doped LaOFeAs Superconductors

Cong Ren, Zhao-Sheng Wang, Huan Yang +5

We present the first experimental results of the lower critical field $H_{c 1}$ of the newly discovered F-doped superconductor LaO $_{0.9}$ F $_{0.1}$ FeAs (F-LaOFeAs) by global and loc…

cond-mat.supr-con2010

Low Temperature Specific Heat of Optimally Doped BaFe $_{2 - x}$ $T M_{x}$ As $_{2}$ ( $T M$ = Co and Ni) Single Crystals: Constraint on the Pairing Gap

Bin Zeng, Gang Mu, Bing Shen +6

Low temperature specific heat has been measured in optimally doped and highly overdoped non-superconducting BaFe $_{2 - x}$ TM $_{x}$ As $_{2}$ ( $T M$ = Co and Ni) single crystals. By using…

cond-mat.supr-con2025

A Strongly Anisotropic Superconducting Gap in the Kagome Superconductor CsV $_{3}$ Sb $_{5}$ : A Study of Directional Point-Contact Andreev Reflection Spectroscopy

Yu-qing Zhao, Zhi-fan Wu, Hai-yan Zuo +11

In the recently discovered V-based kagome superconductors AV $_{3}$ Sb $_{5}$ (A = K, Rb, and Cs), superconductivity is intertwined with an unconventional charge density wave (CDW) order,…

cond-mat.supr-con2008

Nodal Superconductivity with Multiple Gaps in SmFeAsO $_{0.9}$ F $_{0.1}$

Yonglei Wang, Lei Shan, Lei Fang +3

We report the observation of two gaps in the superconductor SmFeAsO $_{0.9}$ F $_{0.1}$ (F-SmFeAsO) with $T_{c} = 51.5 K$ as measured by point-contact spectroscopy. Both gaps decrease with…

cond-mat.supr-con2012

Evidence of a spin resonance mode in the iron-based superconductor Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ from scanning tunneling spectroscopy

Lei Shan, Jing Gong, Yong-Lei Wang +8

We used high-resolution scanning tunneling spectroscopy to study the hole-doped iron pnictide superconductor Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ ( $T_{c} = 38$ K). Features of a bosonic…

cond-mat.supr-con2008

Magnetization Relaxation and Collective Vortex Pinning in the Fe-Based Superconductor SmFeAsO_0.9F_0.1

Huan Yang, Cong Ren, Lei Shan +1

By measuring the dynamic and traditional magnetization relaxations we investigate the vortex dynamics of the newly discovered superconductor SmFeAsO_0.9F_0.1 with Tc = 55K. It is f…

cond-mat.supr-con2016

Nematic Quantum Critical Fluctuations in BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$

Zhaoyu Liu, Yanhong Gu, Wei Zhang +15

We have systematically studied the nematic fluctuations in the electron-doped iron-based superconductor BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$ by measuring the in-plane resistance change under u…

cond-mat.mtrl-sci2016

Topological Phase Transition and Chiral-Anomaly Driven Negative Magneto-Resistance in Bulk Black Phosphorus

Chun-Hong Li, Yu-Jia Long, Ling-Xiao Zhao +8

We report the anisotropic magneto-transport measurement on a non-compound band semiconductor black phosphorus (BP) with magnetic field B up to 16 Tesla applied in both perpendicula…

cond-mat.supr-con2014

The spectroscopic signature of Kondo screening on single adatoms in Na(Fe0.96Co0.03Mn0.01)As

Zhenyu Wang, Delong Fang, Qiang Deng +3

The electronic states of surface adatoms in Na(Fe0.96Co0.03Mn0.01)As have been studied by low temperature scanning tunneling spectroscopy. The spectra recorded on the adatoms displ…

cond-mat.supr-con2008

Evidence for Two Gaps and Breakdown of the Uemura Plot in Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ Single Crystals

Cong Ren, Zhao-sheng Wang, Hui-qian Luo +3

We report a detailed investigation on the lower critical field $H_{c 1}$ of the superconducting Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ (FeAs-122) single crystals. A pronounced kink is obse…

cond-mat.supr-con2006

Reversible magnetization and critical fluctuations in systematically doped YBa $_{2}$ Cu $_{3}$ O $_{7 - I^´}$ single crystals

Hong Gao, Cong Ren, Lei Shan +5

The temperature and field dependence of reversible magnetization have been measured on a YBa $_{2}$ Cu $_{3}$ O $_{7 - I^´}$ single crystal at six different doping concentrations. It is found…

cond-mat.supr-con2008

Low temperature specific heat of the hole-doped Ba_{0.6}K_{0.4}Fe_2As_2 single crystals and electron-doped SmFeAsO_{0.9}F_{0.1} samples

Gang Mu, Huiqian Luo, Zhaosheng Wang +4

Low temperature specific heat (SH) was measured on the FeAs-based superconducting single crystals Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ and high pressure synthesized polycrystalline samp…

Publications (36)

Modulation of Noise in Submicron GaAs/AlGaAs Hall Devices by Gating

Angular dependence of resistivity in the superconducting state of NdFeAsO0.82​F0.18​ single crystals

Measurement of the spin polarization of the magnetic semiconductor EuS with zero-field and Zeeman-split Andreev reflection spectroscopy

Nodal Gap in Fe-Based Layered Superconductor LaO_0.9F_{0.1-delta}FeAs Probed by Specific Heat Measurements

Transport properties and asymmetric scattering in Ba1−x​Kx​Fe2​As2​ single crystals compared to the electron doped counterparts Ba(Fe1−x​Cox​)2​As2​}

Point-Contact Spectroscopy of Iron-Based Layered Superconductor LaO0.9​F0.1−I^´​FeAs

Absence of Andreev Bound States in Noncentrosymmetric Superconductor PbTaSe2​ under Hydrostatic Pressures

Upper critical field, anisotropy, and superconducting properties of Ba1−x​Kx​Fe2​As2​ single crystals

Topological Surface Superconductivity Induced by Hydrostatic Pressure-Enhanced Antisymmetric Spin-Orbit Coupling in Non-Centrosymmetric Superconductor PbTaSe2

Flux dynamics and vortex phase diagram in Ba(Fe1−x​Cox​)2​As2​ single crystals revealed by magnetization and its relaxation

Specific-Heat Measurement of Residual Superconductivity in the Normal State of Underdoped Cuprate Superconductors

Fully Gapped Superconducting State Based on a High Normal State Quasiparticle Density of States in Ba0.6​K0.4​Fe2​As2​ Single Crystals

Evidence for Half-Metallicity in n-type HgCr2Se4

Gap Anisotropy in Iron-Based Superconductors: A Point-Contact Andreev Reflection Study of BaFe2−x​Nix​As2​ Single Crystals

Interstellar Object 3I/ATLAS Observed from Mars by China's Tianwen-1 Spacecraft

Superconductivity and phase diagrams in 4d- and 5d-metal-doped iron arsenides SrFe_{2-x}M_xAs_2 (M = Rh, Ir, Pd)

Vortex images on Ba{1-x}KxFe2As2 observed directly by the magnetic force microscopy

Critical Fields and Anisotropy of NdO0.82F0.18FeAs Single Crystals

Role of multiband effects and electron-hole asymmetry in the superconductivity and normal state properties of Ba(Fe1−x​Cox​)2​As2​

Impurity Scattering Effect on Superconductivity and the Violation of Anderson Theorem in Ba(Fe_{1-x}Co_x)_2As_2 Single Crystals

Physical properties of noncentrosymmetric superconductor Ru7​B3​

Electronic specific heat in BaFe2−x​Nix​As2​

Multiple Magnetization Peaks and New Type of Vortex Phase Transitions in Ba0.6K0.4Fe2As2

Observation of Lattice and Andreev Bound States of Vortices in Ba0.6K0.4Fe2As2 Single Crystals with Scanning Tunneling Microscopy/Spectroscopy

Linear Temperature Dependence of the Lower Critical Field Hc1​ in F-Doped LaOFeAs Superconductors

Low Temperature Specific Heat of Optimally Doped BaFe2−x​TMx​As2​ (TM = Co and Ni) Single Crystals: Constraint on the Pairing Gap

A Strongly Anisotropic Superconducting Gap in the Kagome Superconductor CsV3​Sb5​: A Study of Directional Point-Contact Andreev Reflection Spectroscopy

Nodal Superconductivity with Multiple Gaps in SmFeAsO0.9​F0.1​

Evidence of a spin resonance mode in the iron-based superconductor Ba0.6​K0.4​Fe2​As2​ from scanning tunneling spectroscopy

Magnetization Relaxation and Collective Vortex Pinning in the Fe-Based Superconductor SmFeAsO_0.9F_0.1

Nematic Quantum Critical Fluctuations in BaFe2−x​Nix​As2​

Topological Phase Transition and Chiral-Anomaly Driven Negative Magneto-Resistance in Bulk Black Phosphorus

The spectroscopic signature of Kondo screening on single adatoms in Na(Fe0.96Co0.03Mn0.01)As

Evidence for Two Gaps and Breakdown of the Uemura Plot in Ba0.6​K0.4​Fe2​As2​ Single Crystals

Reversible magnetization and critical fluctuations in systematically doped YBa2​Cu3​O7−I^´​ single crystals

Low temperature specific heat of the hole-doped Ba_{0.6}K_{0.4}Fe_2As_2 single crystals and electron-doped SmFeAsO_{0.9}F_{0.1} samples

Angular dependence of resistivity in the superconducting state of NdFeAsO $_{0.82}$ F $_{0.18}$ single crystals

Transport properties and asymmetric scattering in Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ single crystals compared to the electron doped counterparts Ba(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$ }

Point-Contact Spectroscopy of Iron-Based Layered Superconductor LaO $_{0.9}$ F $_{0.1 - I^´}$ FeAs

Absence of Andreev Bound States in Noncentrosymmetric Superconductor PbTaSe $_{2}$ under Hydrostatic Pressures

Upper critical field, anisotropy, and superconducting properties of Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ single crystals

Flux dynamics and vortex phase diagram in $B a (F e_{1 - x} C o_{x})_{2} A s_{2}$ single crystals revealed by magnetization and its relaxation

Fully Gapped Superconducting State Based on a High Normal State Quasiparticle Density of States in Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ Single Crystals

Gap Anisotropy in Iron-Based Superconductors: A Point-Contact Andreev Reflection Study of BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$ Single Crystals

Role of multiband effects and electron-hole asymmetry in the superconductivity and normal state properties of Ba(Fe $_{1 - x}$ Co $_{x}$ ) $_{2}$ As $_{2}$

Physical properties of noncentrosymmetric superconductor Ru $_{7}$ B $_{3}$

Electronic specific heat in BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$

Linear Temperature Dependence of the Lower Critical Field $H_{c 1}$ in F-Doped LaOFeAs Superconductors

Low Temperature Specific Heat of Optimally Doped BaFe $_{2 - x}$ $T M_{x}$ As $_{2}$ ( $T M$ = Co and Ni) Single Crystals: Constraint on the Pairing Gap

A Strongly Anisotropic Superconducting Gap in the Kagome Superconductor CsV $_{3}$ Sb $_{5}$ : A Study of Directional Point-Contact Andreev Reflection Spectroscopy

Nodal Superconductivity with Multiple Gaps in SmFeAsO $_{0.9}$ F $_{0.1}$

Evidence of a spin resonance mode in the iron-based superconductor Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ from scanning tunneling spectroscopy

Nematic Quantum Critical Fluctuations in BaFe $_{2 - x}$ Ni $_{x}$ As $_{2}$

Evidence for Two Gaps and Breakdown of the Uemura Plot in Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ Single Crystals

Reversible magnetization and critical fluctuations in systematically doped YBa $_{2}$ Cu $_{3}$ O $_{7 - I^´}$ single crystals