Matthias Carsten Putzke

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Crystalline defects can modify quantum interactions in solids, causing unintuitive, even favourable, properties such as quantum Hall effect or superconducting vortex pinning. Here we present another example of this notion-an unexpected unidirectional Kondo ...

We demonstrate a non-linear measurement scheme of the Shubnikov-de Haas effect based on Joule self-heating that builds on ideas of the 3 ?-method used in thin films. While the temperature dependence of the resistance, R(T), of clean metals at low temperatu ...

In an idealized infinite crystal, the material properties are constrained by the symmetries of the unit cell. The point-group symmetry is broken by the sample shape of any finite crystal, but this is commonly unobservable in macroscopic metals. To sense th ...

Intense work studying the ballistic regime of electron transport in two-dimensional systems based on semiconductors and graphene had been thought to have established most of the key experimental facts of the field. In recent years, however, additional form ...

Superconductor/metal interfaces are usually fabricated in heterostructures that join these dissimilar materials. A conceptually different approach has recently exploited the strain sensitivity of heavy-fermion superconductors, selectively transforming regi ...

The cascade of electronic phases in CsV3Sb5 raises the prospect to disentangle their mutual interactions in a clean, strongly interacting kagome lattice. When the kagome planes are stacked into a crystal, its electronic dimensionality encodes how much of t ...

Whereas electron-phonon scattering relaxes the electron's momentum in metals, a perpetual exchange of momentum between phonons and electrons may conserve total momentum and lead to a coupled electron-phonon liquid. Such a phase of matter could be a platfor ...

A long-standing theoretical prediction is that in clean, nodal unconventional superconductors the magnetic penetration depth lambda, at zero temperature, varies linearly with magnetic field. This non-linear Meissner effect is an equally important manifesta ...

Our understanding of quantum materials is commonly based on precise determinations of their electronic spectrum by spectroscopic means, most notably angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy. Both require atomicall ...

We report measurements of the in-plane thermoelectric power (TEP) for an overdoped (OD) crystal of the single layer cuprate superconductor Tl2Ba2CuO6+x (Tl2201) at several hole concentrations (p), from 300 or 400 K to below the superconducting transition t ...

As conductors in electronic applications shrink, microscopic conduction processes lead to strong deviations from Ohm's law. Depending on the length scales of momentum conserving (l(MC)) and relaxing (l(MR)) electron scattering, and the device size (d), cur ...

Microstructures can be carefully designed to reveal the quantum phase of the wave-like nature of electrons in a metal. Here, we report phase-coherent oscillations of out-of-plane magnetoresistance in the layered delafossites PdCoO2 and PtCoO2. The oscillat ...

Although crystals of strongly correlated metals exhibit a diverse set of electronic ground states, few approaches exist for spatially modulating their properties. In this study, we demonstrate disorder-free control, on the micrometer scale, over the superc ...

Zirconium pentatetelluride, ZrTe5, shows remarkable sensitivity to hydrostatic pressure. In this work we address the high-pressure transport and optical properties of this compound, on samples grown by flux and chemical vapor transport. The high-pressure r ...

Layered transition metal dichalcogenides (TMDs) are commonly classified as quasi-two-dimensional materials, meaning that their electronic structure closely resembles that of an individual layer, which results in resistivity anisotropies reaching thousands. ...

The quest to improve transparent conductors balances two key goals: increasing electrical conductivity and increasing optical transparency. To improve both simultaneously is hindered by the physical limitation that good metals with high electrical conducti ...

While electrons moving perpendicular to a magnetic field are confined to cyclotron orbits, they can move freely parallel to the field. This simple fact leads to complex current flow in clean, low carrier density semi-metals, such as long-ranged current jet ...

The concept of quasi-symmetry-a perturbatively small deviation from exact symmetry-is introduced and leads to topological materials with strong resilience to perturbations. ...

We present an experimental set-up for the controlled application of strain gradients by mechanical piezoactuation on 3D crystalline microcantilevers that were fabricated by focused ion beam machining. A simple sample design tailored for transport character ...

Matthias Carsten Putzke

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Unidirectional Kondo scattering in layered NbS2

Non-linear Shubnikov-de Haas oscillations in the self-heating regime

Directional ballistic transport in the two-dimensional metal PdCoO2

Low-symmetry nonlocal transport in microstructured squares of delafossite metals

Controlling superconductivity of CeIrIn5 microstructures by substrate selection

Three-dimensional Fermi surfaces from charge order in layered CsV3Sb5

Evidence of a coupled electron-phonon liquid in NbGe2

Observation of the non-linear Meissner effect

Controlling crystal cleavage in focused ion beam shaped specimens for surface spectroscopy

Thermoelectric power of overdoped Tl2201 crystals: charge density waves and T1 and T2 resistivities

Sondheimer oscillations as a probe of non-ohmic flow in WP2 crystals

h/e oscillations in interlayer transport of delafossites

Spatial control of heavy-fermion superconductivity in CeIrIn5

Probing intraband excitations in ZrTe5: A high-pressure infrared and transport study

Preferential out-of-plane conduction and quasi-one-dimensional electronic states in layered 1T-TaS2

Layered metals as polarized transparent conductors

Magnetic electron collimation in three-dimensional semi-metals

Quasi-symmetry-protected topology in a semi-metal

Bending strain in 3D topological semi-metals

Reply to: Low-frequency quantum oscillations in LaRhIn5: Dirac point or nodal line?