Publications (16)
Phonon-mediated room-temperature quantum Hall transport in graphene
Daniel Vaquero, Vito Clericò, Michael Schmitz +14
The quantum Hall (QH) effect in two-dimensional electron systems (2DESs) is conventionally observed at liquid-helium temperatures, where lattice vibrations are strongly suppressed…
Dimensionality control and rotational symmetry breaking superconductivity in square-planar layered nickelates
Lin Er Chow, Km Rubi, King Yau Yip +11
The interplay between dimensionality and various phases of matter is a central inquiry in condensed matter physics. New phases are often discovered through spontaneously broken sym…
Effect of phonon anharmonicity on ferroelectricity in EuxBa1-xTiO3
Bommareddy Poojitha, Km Rubi, Soumya Sarkar +3
Investigating the competition between ferroelectric ordering and quantum fluctuations is essential to tailor the desired functionalities of mixed ferroelectric and incipient ferroe…
High-field-stabilized reentrant superconductivity in infinite-layer nickelate thin films
Km Rubi, King Yau Yip, Elizabeth Krenkel +9
Magnetic fields typically suppress superconductivity through Pauli and orbital limiting effects. However, there are rare instances of magnetic-field-induced superconductivity, as s…
Strong Electron-Phonon Interaction and Colossal Magnetoresistance in EuTiO
Ruofan Chen, Ji-Chang Ren, Km Rubi +2
At low temperatures, EuTiO system has very large resistivities and exhibits colossal magnetoresistance. Based on a first principle calculation and the dynamical mean-field theo…
Unconventional quantum oscillations and evidence of nonparabolic electronic states in quasi-two-dimensional electron system at complex oxide interfaces
Km Rubi, Denis R. Candido, Manish Dumen +10
The simultaneous occurrence of electric-field controlled superconductivity and spin-orbit interaction makes two-dimensional electron systems (2DES) constructed from perovskite tran…
Disentangling electrical switching of antiferromagnetic NiO using high magnetic fields
Casper Floris Schippers, MichaÅ J. Grzybowski, Km Rubi +5
Recent demonstrations of the electrical switching of antiferromagnets (AFs) have given an enormous impulse to the field of AF spintronics. Many of these observations are plagued by…
Electronic g-factor and Magneto-transport in InSb Quantum Wells
Zijin Lei, Christian A. Lehner, Km Rubi +10
High mobility InSb quantum wells with tunable carrier densities are investigated by transport experiments in magnetic fields tilted with respect to the sample normal. We employ the…
Interwoven atypical quantum states in CeLiBi
Mitchell M. Bordelon, Clément Girod, Filip Ronning +7
We report the discovery of CeLiBi, the first example of a material in the tetragonal Ce ( = transition metal; = pnictogen) family wherein an alkali cation replaces…
High-quality Two-Dimensional Electron Gas in Undoped InSb Quantum Wells
Zijin Lei, Erik Cheah, Km Rubi +7
We report on transport experiments through high-mobility gate-tunable undoped InSb QWs. Due to the elimination of any Si modulation doping, the gate-defined two-dimensional electro…
Electrostatic gate-controlled quantum interference in a high-mobility two-dimensional electron gas at the (LaSr)(AlTa)O/SrTiO interface
Km Rubi, Kun Han, Huang Zhen +4
We report quantum oscillations in magnetoresistance that are periodic in magnetic field (), observed at the interface between (LaSr)(AlTa)O…
Large adiabatic temperature and magnetic entropy changes in EuTiO3
A. Midya, P. Mandal, Km Rubi +5
We have investigated the magnetocaloric effect in single and polycrystalline samples of quantum paraelectric EuTiO3 by magnetization and heat capacity measurements. Single crystall…
Electronic subbands in the a-LaAlO/KTaO interface revealed by quantum oscillations in high magnetic fields
Km Rubi, Shengwei Zeng, Femke Bangma +4
Investigating Shubnikov-de Haas (SdH) oscillations in high magnetic fields, we experimentally infer the electronic band structure of the quasi-two-dimensional electron gas (2DEG) a…
Colossal magnetoresistance over a wide temperature range in Eu0.99La0.01TiO3
Km Rubi, R. Mahendiran
We report occurrence of large magnetoresistance in lightly doped antiferromagnetic paraelectric EuTiO3. Reports of magnetoresistance in rare-earth titanates (RTiO3 oxides) are very…
Aperiodic quantum oscillations in the two-dimensional electron gas at the LaAlO3/SrTiO3 interface
Km Rubi, Julien Gosteau, Raphaël Serra +9
Despite several attempts, the intimate electronic structure of two-dimensional electron systems buried at the interface between LaAlO3 and SrTiO3 still remains to be experimentally…
Giant magnetocaloric effect in magnetoelectric Eu1-xBaxTiO3
Km Rubi, Pawan Kumar, D. V. Maheswar Repaka +3
We report the magnetic entropy change (Delta Sm) in magnetoelectric Eu1-xBaxTiO3 for x = 0.1- 0.9. We find - delta Sm = 11 (40) J/kg.K in x = 0.1 for a field change of 1 (5) Tesla…