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Nanoscale magnets might form the building blocks of next generation memories. To explore their functionality, magnetic sensing at the nanoscale is key. We present a multifunctional combination of a scanning nanometer-sized superconducting…

In simulations of a model with topological sectors, algorithms which proceed in small update steps tend to get stuck in one sector, especially on fine lattices. This distorts the numerical results; in particular it is not straightforward to…

高能物理 - 格点 · 物理学 2016-10-12 Wolfgang Bietenholz , Krzysztof Cichy , Philippe de Forcrand , Arthur Dromard , Urs Gerber

A scanning tunneling microscope (STM) has been equipped with a nanoscale force sensor and signal transducer composed of a single D2 molecule that is confined in the STM junction. The uncalibrated sensor is used to obtain ultra-high…

介观与纳米尺度物理 · 物理学 2024-01-30 C. Weiss , C. Wagner , C. Kleimann , M. Rohlfing , F. S. Tautz , R. Temirov

In our paper [1], we studied the magnetic response of H$_3$S and LaH$_{10}$ superconductors to an applied magnetic field using Superconducting Quantum Interference Device (SQUID) magnetometry. Hirsch, in his comment [2], highlighted an…

超导电性 · 物理学 2024-08-26 V. S. Minkov , E. F. Talantsev , V. Ksenofontov , S. L. Budko , F. F. Balakirev , M. I. Eremets

The in-plane magnetic penetration depth, $\lambda_m(T)$, was measured in single crystals of SrPd$_2$Ge$_2$ superconductor in a dilution refrigerator down to T=60 mK and in magnetic fields up to $H_{dc} = 1$ T by using a tunnel diode…

超导电性 · 物理学 2015-06-12 H. Kim , N. H. Sung , B. K. Cho , M. A. Tanatar , R. Prozorov

Paleomagnetically useful information is expected to be recorded by samples with moments up to three orders of magnitude below the detection limit of standard superconducting rock magnetometers. Such samples are now detectable using recently…

地球物理 · 物理学 2016-11-23 Eduardo A. Lima , Benjamin P. Weiss

Nano-scale superconducting quantum interference devices (nano-SQUIDS) where the weak-links are made from nano-bridges --- i.e., nano-bridge--SQUIDs (NBSs) --- are one of the most sensitive magnetometers for nano-scale magnetometry. Because…

超导电性 · 物理学 2019-04-10 Dibyendu Hazra

We present the fabrication of nanoscale superconducting quantum interference devices (SQUIDs) at the apex of wireframe tips on self-aligned superconducting cantilever probes. The probes are made on silicon wafers using molding techniques in…

The combination of superconductivity and the helical spin-momentum locking at the surface state of a topological insulator (TI) has been predicted to give rise to p-wave superconductivity and Majorana bound states. The superconductivity can…

We have studied a Superconducting Quantum Interference SQUID device made from a single layer thin film of superconducting silicon. The superconducting layer is obtained by heavily doping a silicon wafer with boron atoms using the Gas…

We present transport measurements of unshunted dc superconducting quantum interference devices (SQUIDs) consisting of 30 nm wide aluminum nanobridges of varying length L contacted with two and three dimensional banks. 3D nanobridge SQUIDs…

介观与纳米尺度物理 · 物理学 2015-05-18 R. Vijay , E. M. Levenson-Falk , D. H. Slichter , I. Siddiqi

Nb$_{3}$Sn is a superconductor of great relevance for perspective RF applications. We present for the first time surface impedance $Z_s$ measurements at 15 GHz and low RF field amplitude on Nb$_{3}$Sn in high magnetic fields up to 12 T,…

The London penetration depth, $\lambda(T)$, was measured in a single crystal V$_{3}$Si. The superfluid density obtained from this measurement shows a distinct signature of two almost decoupled superconducting gaps. This alone is…

超导电性 · 物理学 2022-01-19 Kyuil Cho , M. Kończykowski , S. Ghimire , M. A. Tanatar , Lin-Lin Wang , V. G. Kogan , R. Prozorov

To establish the mechanism of unconventional superconductivity in Sr$_2$RUO$_4$, a prerequisite is direct information concerning the momentum-space structure of the energy gaps $\Delta_i(k)$, and in particular whether the pairing strength…

超导电性 · 物理学 2013-11-22 I. A. Firmo , S. Lederer , C. Lupien , A. P. Mackenzie , J. C. Davis , S. A. Kivelson

Superconducting quantum interference devices (SQUIDs) are among the most sensitive detectors for out-of-plane magnetic field components. However, due to their periodic response with short modulation period $M = 1 \Phi_0$, determined by the…

We present a fabrication method of superconducting quantum interference devices (SQUIDs) based on direct write lithography with an Atomic Force Microscope (AFM). This technique involves maskless local anodization of Nb or NbN ultrathin…

介观与纳米尺度物理 · 物理学 2009-11-07 M. Faucher , T. Fournier , B. Pannetier , C. Thirion , W. Wernsdorfer , J. C. Villegier , V. Bouchiat

We report a low temperature measurement technique and magnetization data of a quantum molecular spin, by implementing an on-chip SQUID technique. This technique enables the SQUID magnetometery in high magnetic fields, up to 7 Tesla. The…

介观与纳米尺度物理 · 物理学 2010-09-14 L. Chen , W. Wernsdorfer , C. Lampropoulos , G. Christou , I. Chiorescu

While metasurfaces (MSs) are constructed from deeply-subwavelength unit cells, they are generally electrically large and full-wave simulations of the complete structure are computationally expensive. Thus, to reduce this high computational…

应用物理 · 物理学 2021-08-16 Ville Tiukuvaara , Tom. J. Smy , Karim Achouri , Shulabh Gupta

Fascination with the concept of superconducting (SC) {\it superfluid density} $\rho_s$ has persisted since the beginning of superconductivity theory, with numerical values of an actual density rarely provided. Over time $\rho_s$, addressed…

超导电性 · 物理学 2026-01-16 Warren E. Pickett

Surfaces -- by breaking bulk symmetries, introducing roughness, or hosting defects -- can significantly influence magnetic order in magnetic materials. Determining their effect on the complex nanometer-scale phases present in certain…