Sign-Reversing Hall Effect in Atomically Thin High-Temperature 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Bi</mml:mi></mml:mrow><mml:mrow><mml:mn>2.1</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>1.9</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>CaCu</mml:mi></mml:mrow><mml:mrow><mml:mn>2.0</mml:mn></mml:mrow></mml:msub></m

Zhao, Shu Yang Frank; Poccia, Nicola; Panetta, Margaret; Yu, Cyndia; Johnson, J.; Yoo, Hyobin; Zhong, Ruidan; Gu, Genda; Watanabe, Kenji; Taniguchi, Takashi; Postolova, S. V.; Vinokur, V. M.; Kim, Philip

doi:10.1103/physrevlett.122.247001

Cited by 73 publications

(39 citation statements)

References 57 publications

(11 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…which by Eq. (36), using the copper-copper distance of these materials yields, is consistent with a constant parameter γ which is roughy consistent with phenomenological Uemura's relations [33,34] [7,20,36,37]. See text for details.…”

Section: Mvc Of Cuprate Superconductorssupporting

confidence: 69%

“…A second (lower temperature) sign reversal, such as observed in Ref. [7], indicates that quasiparticle scattering is dominated by inelastic (electron-electron and electron phonon) processes.…”

mentioning

confidence: 62%

“…In reality, for quasi-2D films and especially for few monolayers as in Ref. [7], T c (B) (or B c2 (T )) denote a broad crossover between the flux flow and normal metal regimes. Evidently, short range phase correlations which are required to define vortices, persist in a limited range of T > T c , and B > B c2 (T ).…”

Section: Inhomogeneous Flow and Fluctuationsmentioning

confidence: 99%

“…The pioneering theory of Bardeen and Stephen (BS) [1] predicted that the Hall sign is inherited from the normal phase which persists inside the vortex cores. Soon thereafter, in a challenge to BS theory, Hall sign reversals have been measured in diverse superconductors [2][3][4][5][6][7]. This effect, named "Hall anomaly", is illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Hall anomaly and moving vortex charge in layered superconductors

Auerbach

Arovas

2020

SciPost Phys.

View full text Add to dashboard Cite

Magnetotransport theory of layered superconductors in the flux flow steady state is revisited. Longstanding controversies concerning observed Hall sign reversals are resolved. The conductivity separates into a Bardeen-Stephen vortex core contribution, and a Hall conductivity due to moving vortex charge. This charge, which is responsible for Hall anomaly, diverges logarithmically at weak magnetic field. Its values can be extracted from magetoresistivity data by extrapolation of vortex core Hall angle from the normal phase. Hall anomalies in YBa 2 Cu 3 O 7 , Bi 2 Sr 2 CaCu 2 O 8−x , and Nd 1.85 Ce 0.15 CuO 4−y data are consistent with theoretical estimates based on doping dependence of London penetration depths. In the appendices, we derive the Streda formula for the hydrodynamical Hall conductivity, and refute previously assumed relevance of Galilean symmetry to Hall anomalies. arXiv:1912.10062v3 [cond-mat.supr-con] 4 Mar 2020 1. Superconductors in a periodic potential with impurities are not Galilean invariant.

show abstract

Section: Mvc Of Cuprate Superconductorssupporting

confidence: 69%

mentioning

confidence: 62%

Section: Inhomogeneous Flow and Fluctuationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hall anomaly and moving vortex charge in layered superconductors

Auerbach

Arovas

2020

SciPost Phys.

View full text Add to dashboard Cite

show abstract

“…With these motivations, we report a transport experiment on Nb thin films to investigate the longitudinal resistive transition and the Hall effect, two most important transport quantities associated with the superconducting-normal transition. The Hall effect in the superconducting-normal transition in a magnetic field has been a controversial subject [11][12][13][14][15][16][17][18][19][20][21] with regard to the sign of the Hall coefficient and how it may change as a function of magnetic field or temperature. Our results suggest that the well-known anomaly of sign reversal in the Hall effect may in fact be caused by the edge superconductivity.…”

Section: Introductionmentioning

confidence: 99%

Edge surface supercurrent and transport anomalies in Hall effect measurements in Nb

Zhou¹,

Zeng²,

Tang³

et al. 2021

Preprint

View full text Add to dashboard Cite

We report an experimental study of the edge surface superconductivity and the Hall effect in a Nb thin film Hall device. We show that the previously reported anomalous sign reversal of the Hall resistance across the superconducting-normal transition is due to the edge supercurrent. Large anomalous oscillations between the transverse voltage probes are observed in the field range between Hc2 and Hc3, in both the anti-symmetric (Hall) and symmetric (resistive) channels. These oscillations are extremely sensitive to a small tilting of the edge surface relative to the external magnetic field. We suggest that these oscillations may arise from the Aharonov-Bohm interference of the edge supercurrents.

show abstract

On‐Demand Local Modification of High‐T_c Superconductivity in Few Unit‐Cell Thick Bi₂Sr₂CaCu₂O_8+δ

et al. 2020

View full text Add to dashboard Cite

High‐temperature superconductors (HTSs) are important for potential applications and for understanding the origin of strong correlations. Bi2Sr2CaCu2O8+δ (BSCCO), a van der Waals material, offers a platform to probe the physics down to a unit‐cell. Guiding the flow of electrons by patterning 2DEGS and oxide heterostructures has brought new functionality and access to new science. Similarly, modifying superconductivity in HTS locally, on a small length scale, is of immense interest for superconducting electronics. A route to modify superconductivity locally by depositing metal on the surface is reported here by transport studies on few unit‐cell thick BSCCO. Deposition of chromium (Cr) on the surface over a selected area of BSCCO results in insulating behavior of the underlying region. Cr locally depletes oxygen in CuO2 planes and disrupts the superconductivity in the layers below. This technique of modifying superconductivity is suitable for making sub‐micrometer superconducting wires and more complex superconducting devices.

show abstract

Sign-Reversing Hall Effect in Atomically Thin High-Temperature Bi2.1Sr1.9CaCu2.0

Cited by 73 publications

References 57 publications

Hall anomaly and moving vortex charge in layered superconductors

Hall anomaly and moving vortex charge in layered superconductors

Edge surface supercurrent and transport anomalies in Hall effect measurements in Nb

On‐Demand Local Modification of High‐T_c Superconductivity in Few Unit‐Cell Thick Bi₂Sr₂CaCu₂O_8+δ

Contact Info

Product

Resources

About

Sign-Reversing Hall Effect in Atomically Thin High-Temperature Bi2.1Sr1.9CaCu2.0

Cited by 73 publications

References 57 publications

Hall anomaly and moving vortex charge in layered superconductors

Hall anomaly and moving vortex charge in layered superconductors

Edge surface supercurrent and transport anomalies in Hall effect measurements in Nb

On‐Demand Local Modification of High‐Tc Superconductivity in Few Unit‐Cell Thick Bi2Sr2CaCu2O8+δ

Contact Info

Product

Resources

About

On‐Demand Local Modification of High‐T_c Superconductivity in Few Unit‐Cell Thick Bi₂Sr₂CaCu₂O_8+δ