145 citations · 1.1k across the 38 of their papers we have counts for
22 papers · 1 filter
Angular dependence of the upper critical induction of clean - and -wave superconductors with self-consistent ellipsoidal effective mass and Zeeman anisotropies
Aiying Zhao, Qiang Gu, Richard A. Klemm
We employ the Schr{ö}dinger-Dirac method generalized to an ellipsoidal effective mass anisotropy in order to treat the spin and orbital effective mass anisotropies self consistentl…
Wave functions for high-symmetry, thin microstrip antennas and two-dimensional quantum boxes
Joseph R. Rain, PeiYu Cai, Alexander Baekey +5
For a spinless quantum particle in a one-dimensional box or an electromagnetic wave in a one-dimensional cavity, the respective Dirichlet and Neumann boundary conditions both lead…
Towards a Microscopic Theory of the Knight Shift in an Anisotropic, Multiband Type-II Superconductor
Richard A. Klemm
A method is proposed to extend the zero-temperature Hall-Klemm microscopic theory of the Knight shift in an anisotropic and correlated, multi-band metal to calculate at…
Pristine and intercalated transition metal dichalcogenide superconductors
Richard A. Klemm
Transition metal dichalcogenides (TMDs) are quasi-two-dimensional layered compounds exhibiting strongly competing charge-density wave (CDW) and superconducting (SC) order parameter…
Double ellipsoidal Fermi surface model of the normal state of ferromagnetic superconductors
Christopher Lörscher, Jingchuan Zhang, Qiang Gu +1
We model the normal state of ferromagnetic superconductors with two general ellipsoidal Fermi surfaces (FSs), one for each spin projection , each with it…
Local SiC photoluminescence evidence of non-mutualistic hot spot formation and sub-THz coherent emission from a rectangular BiSrCaCuO mesa
Hidetoshi Minami, Chiharu Watanabe, Kota Sato +5
From the photoluminescence of SiC microcrystals uniformly covering a rectangular mesa of the high transition temperature superconductor BiSrCaCuO, the loc…
Anomalous angular dependence of the upper critical induction of orthorhombic ferromagnetic superconductors with completely broken p-wave symmetry
Christopher Lörscher, Jingchuan Zhang, Qiang Gu +1
We employ the Klemm-Clem transformations to map the equations of motion for the Green functions of a clean superconductor with a general ellipsoidal Fermi surface (FS) characterize…
Broadly Tunable Sub-terahertz Emission from Internal Branches of the Current-voltage Characteristics of Superconducting Bi2Sr2CaCu2O8+d Single Crystals
Manabu Tsujimoto, Takashi Yamamoto, Kaveh Delfanazari +8
Continuous, coherent sub-terahertz radiation arises when a dc voltage is applied across a stack of the many intrinsic Josephson junctions in a Bi2Sr2CaCu2O8+d single crystal. The a…
Upper critical field of p-wave superconductors with orthorhombic symmetry
Christopher Lörscher, Richard A. Klemm, Jingchuan Zhang +1
We extend the Scharnberg-klemm theory of in p-wave superconductors with broken symmetry to cases of partially broken symmetry in an orthorhombic crystal, as is appropriate…
Upper critical field of p-wave ferromagnetic superconductors with orthorhombic symmetry
Richard A. Klemm, Christopher Lörscher, Jingchuan Zhang +1
We extended the Scharnberg-Klemm theory of in p-wave superconductors with broken symmetry to cases of partially broken symmetry in an orthorhombic crystal, as is approp…
Cavity mode waves during terahertz radiation from rectangular BiSrCaCuO mesas
Richard A. Klemm, Erica R. LaBerge, Dustin R. Morley +3
We re-examined the angular dependence of the radiation from the intrinsic Josephson junctions in rectangular mesas of BiSrCaCuO, in order to determine if the ca…
Geometrical Resonance Conditions for THz Radiation from the Intrinsic Josephson Junctions in Bi2Sr2CaCu2O8+d
Manabu Tsujimoto, Kazuhiro Yamaki, Kota Deguchi +6
Subterahertz radiation emitted from a variety of short rectangular-, square-, and disk-shaped mesas of intrinsic Josephson junctions fabricated from a Bi2Sr2CaCu2O8+d single crysta…
Evidence for a Dual-Source Mechanism of THz Radiation from Rectangular Mesas of Single Crystalline \bm{} Intrinsic Josephson Junctions
Kazuo Kadowaki, Manabu Tsujimoto, Kazuhiro Yamaki +5
The THz radiation emitted from rectangular mesas of single-crystal was studied using angular distribution measurements and Fourier transform infrar…
Enhancement of ferromagnetism by p-wave Cooper pairing in superconducting ferromagnets
Xiaoling Jian, Jingchuan Zhang, Qiang Gu +1
In superconducting ferromagnets for which the Curie temperature exceeds the superconducting transition temperature , it was suggested that ferromagnetic spin fluctua…
Radiation from a Josephson STAR-emitter
Richard A. Klemm, Kazuo Kadowaki
We calculate the angular dependence of the radiation-zone output power and electric polarization of stimulated terahertz amplified radiation (STAR) emitted from a voltage appl…
Angular dependence of the radiation power of a Josephson STAR-emitter
Richard A. Klemm, Kazuo Kadowaki
We calculate the angular dependence of the power of stimulated terahertz amplified radiation (STAR) emitted from a voltage applied across a stack of intrinsic Josephson juncti…
Josephson (001) tilt grain boundary junctions of high temperature superconductors
Gerald B. Arnold, Richard A. Klemm
We calculate the critical current across in-plane (001) tilt grain boundary junctions of high temperature superconductors. We solve for the electronic states corresponding to…
The c-axis transport in naturally-grown BiSrCaCuO cross-whisker junctions
Yu. I. Latyshev, A. P. Orlov, A. M. Nikitina +2
We studied the c-axis transport of BiSrCaCuO (Bi2212) cross-whisker junctions formed by annealing ``naturally'' formed whisker junctions. These frequently appea…
Theory of BiSrCaCuO Cross-Whisker Josephson Junctions
Richard A. Klemm
Takano {\it et al.} [Phys. Rev. B {\bf 65}, 140513 (2002) and unpublished] made Josephson junctions from single crystal whiskers of BiSrCaCuO crossed an angle $…
Pairbreaking Without Magnetic Impurities in Disordered Superconductors
Amit K. Chattopadhyay, Richard A. Klemm, Debanand Sa
We study analytically the effects of inhomogeneous pairing interactions in short coherence length superconductors, using a spatially varying Bogoliubov-deGennes model. Within the B…
Gaussian Tunneling Model of c-Axis Twist Josephson Junctions
A. Bille, R. A. Klemm, K. Scharnberg
We calculate the critical current density for c-axis Josephson tunneling between identical high temperature superconductors twisted an angle about the c-axis. We mode…
c-Axis Twist Bi2Sr2CaCu2O(8+delta) Josephson Junctions: A New Phase-Sensitive Test of Order Parmaeter Symmetry
R. A. Klemm, C. T. Rieck, K. Scharnberg
Li et al. found that the critical current density JcJ across atomically clean c-axis twist junctions of Bi2Sr2CaCu2O(8+x) is the same as that of the constituent single crystal, JcS…